- Added solutions by Kang-min Liu.

12 files changed, 1379 insertions, 1360 deletions

diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index ad37c4f7f5..ba43d4c460 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -8,10 +8,12 @@
                   2
                ]
             ],
-            "id" : "Alexander Karelas",
-            "name" : "Alexander Karelas"
+            "name" : "Alexander Karelas",
+            "id" : "Alexander Karelas"
          },
          {
+            "id" : "Andrew Shitov",
+            "name" : "Andrew Shitov",
             "data" : [
                [
                   "Raku",
@@ -21,13 +23,9 @@
                   "Blog",
                   1
                ]
-            ],
-            "id" : "Andrew Shitov",
-            "name" : "Andrew Shitov"
+            ]
          },
          {
-            "name" : "Dave Jacoby",
-            "id" : "Dave Jacoby",
             "data" : [
                [
                   "Perl",
@@ -37,19 +35,23 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "name" : "Dave Jacoby",
+            "id" : "Dave Jacoby"
          },
          {
+            "id" : "E. Choroba",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "E. Choroba",
             "name" : "E. Choroba"
          },
          {
+            "id" : "Flavio Poletti",
+            "name" : "Flavio Poletti",
             "data" : [
                [
                   "Perl",
@@ -59,23 +61,21 @@
                   "Blog",
                   2
                ]
-            ],
-            "id" : "Flavio Poletti",
-            "name" : "Flavio Poletti"
+            ]
          },
          {
+            "id" : "James Smith",
+            "name" : "James Smith",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "id" : "James Smith",
-            "name" : "James Smith"
+            ]
          },
          {
-            "name" : "Jorg Sommrey",
             "id" : "Jorg Sommrey",
+            "name" : "Jorg Sommrey",
             "data" : [
                [
                   "Perl",
@@ -84,6 +84,20 @@
             ]
          },
          {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  2
+               ]
+            ],
+            "name" : "Kang-min Liu",
+            "id" : "Kang-min Liu"
+         },
+         {
             "id" : "Laurent Rosenfeld",
             "data" : [
                [
@@ -113,13 +127,13 @@
          },
          {
             "name" : "Niels van Dijke",
-            "id" : "Niels van Dijke",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Niels van Dijke"
          },
          {
             "name" : "Nuno Vieira",
@@ -142,8 +156,8 @@
             "id" : "Philip Hood"
          },
          {
-            "name" : "Roger Bell_West",
             "id" : "Roger Bell_West",
+            "name" : "Roger Bell_West",
             "data" : [
                [
                   "Perl",
@@ -156,7 +170,6 @@
             ]
          },
          {
-            "name" : "Simon Green",
             "id" : "Simon Green",
             "data" : [
                [
@@ -167,29 +180,31 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "name" : "Simon Green"
          },
          {
-            "name" : "Simon Proctor",
             "id" : "Simon Proctor",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "name" : "Simon Proctor"
          },
          {
             "name" : "Stuart Little",
-            "id" : "Stuart Little",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "id" : "Stuart Little"
          },
          {
+            "id" : "Ulrich Rieke",
             "name" : "Ulrich Rieke",
             "data" : [
                [
@@ -200,11 +215,10 @@
                   "Raku",
                   2
                ]
-            ],
-            "id" : "Ulrich Rieke"
+            ]
          },
          {
-            "name" : "W. Luis Mochan",
+            "id" : "W. Luis Mochan",
             "data" : [
                [
                   "Perl",
@@ -215,38 +229,18 @@
                   1
                ]
             ],
-            "id" : "W. Luis Mochan"
+            "name" : "W. Luis Mochan"
          }
       ]
    },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
-   },
-   "legend" : {
-      "enabled" : 0
-   },
-   "chart" : {
-      "type" : "column"
-   },
-   "xAxis" : {
-      "type" : "category"
-   },
-   "plotOptions" : {
-      "series" : {
-         "borderWidth" : 0,
-         "dataLabels" : {
-            "enabled" : 1,
-            "format" : "{point.y}"
-         }
-      }
-   },
-   "title" : {
-      "text" : "Perl Weekly Challenge - 091"
+   "tooltip" : {
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
+      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
+      "followPointer" : 1
    },
    "series" : [
       {
+         "name" : "Perl Weekly Challenge - 091",
          "data" : [
             {
                "name" : "Alexander Karelas",
@@ -259,96 +253,121 @@
                "y" : 3
             },
             {
-               "drilldown" : "Dave Jacoby",
                "y" : 3,
+               "drilldown" : "Dave Jacoby",
                "name" : "Dave Jacoby"
             },
             {
                "drilldown" : "E. Choroba",
-               "y" : 2,
-               "name" : "E. Choroba"
+               "name" : "E. Choroba",
+               "y" : 2
             },
             {
+               "drilldown" : "Flavio Poletti",
                "name" : "Flavio Poletti",
-               "y" : 4,
-               "drilldown" : "Flavio Poletti"
+               "y" : 4
             },
             {
-               "name" : "James Smith",
                "drilldown" : "James Smith",
+               "name" : "James Smith",
                "y" : 2
             },
             {
-               "y" : 2,
                "drilldown" : "Jorg Sommrey",
-               "name" : "Jorg Sommrey"
+               "name" : "Jorg Sommrey",
+               "y" : 2
+            },
+            {
+               "y" : 4,
+               "drilldown" : "Kang-min Liu",
+               "name" : "Kang-min Liu"
             },
             {
                "y" : 5,
-               "drilldown" : "Laurent Rosenfeld",
-               "name" : "Laurent Rosenfeld"
+               "name" : "Laurent Rosenfeld",
+               "drilldown" : "Laurent Rosenfeld"
             },
             {
-               "name" : "Mark Anderson",
                "drilldown" : "Mark Anderson",
+               "name" : "Mark Anderson",
                "y" : 2
             },
             {
+               "y" : 2,
                "name" : "Niels van Dijke",
-               "drilldown" : "Niels van Dijke",
-               "y" : 2
+               "drilldown" : "Niels van Dijke"
             },
             {
                "name" : "Nuno Vieira",
-               "y" : 2,
-               "drilldown" : "Nuno Vieira"
+               "drilldown" : "Nuno Vieira",
+               "y" : 2
             },
             {
+               "name" : "Philip Hood",
                "drilldown" : "Philip Hood",
-               "y" : 2,
-               "name" : "Philip Hood"
+               "y" : 2
             },
             {
-               "drilldown" : "Roger Bell_West",
                "y" : 4,
-               "name" : "Roger Bell_West"
+               "name" : "Roger Bell_West",
+               "drilldown" : "Roger Bell_West"
             },
             {
-               "name" : "Simon Green",
                "y" : 3,
+               "name" : "Simon Green",
                "drilldown" : "Simon Green"
             },
             {
-               "name" : "Simon Proctor",
                "drilldown" : "Simon Proctor",
+               "name" : "Simon Proctor",
                "y" : 2
             },
             {
                "name" : "Stuart Little",
-               "y" : 2,
-               "drilldown" : "Stuart Little"
+               "drilldown" : "Stuart Little",
+               "y" : 2
             },
             {
+               "drilldown" : "Ulrich Rieke",
                "name" : "Ulrich Rieke",
-               "y" : 4,
-               "drilldown" : "Ulrich Rieke"
+               "y" : 4
             },
             {
-               "y" : 3,
+               "name" : "W. Luis Mochan",
                "drilldown" : "W. Luis Mochan",
-               "name" : "W. Luis Mochan"
+               "y" : 3
             }
          ],
-         "name" : "Perl Weekly Challenge - 091",
          "colorByPoint" : 1
       }
    ],
+   "title" : {
+      "text" : "Perl Weekly Challenge - 091"
+   },
+   "legend" : {
+      "enabled" : 0
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
    "subtitle" : {
-      "text" : "[Champions: 18] Last updated at 2020-12-18 13:07:35 GMT"
+      "text" : "[Champions: 19] Last updated at 2020-12-18 13:10:49 GMT"
    },
-   "tooltip" : {
-      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
-      "followPointer" : 1,
-      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>"
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "enabled" : 1,
+            "format" : "{point.y}"
+         },
+         "borderWidth" : 0
+      }
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "xAxis" : {
+      "type" : "category"
    }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index f4900bd731..20ba634652 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,16 +1,4 @@
 {
-   "legend" : {
-      "enabled" : "false"
-   },
-   "yAxis" : {
-      "min" : 0,
-      "title" : {
-         "text" : null
-      }
-   },
-   "chart" : {
-      "type" : "column"
-   },
    "xAxis" : {
       "type" : "category",
       "labels" : {
@@ -20,25 +8,42 @@
          }
       }
    },
+   "chart" : {
+      "type" : "column"
+   },
+   "subtitle" : {
+      "text" : "Last updated at 2020-12-18 13:10:49 GMT"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : null
+      },
+      "min" : 0
+   },
+   "title" : {
+      "text" : "Perl Weekly Challenge Contributions [2019 - 2020]"
+   },
+   "legend" : {
+      "enabled" : "false"
+   },
    "series" : [
       {
-         "name" : "Contributions",
          "dataLabels" : {
-            "align" : "right",
             "style" : {
                "fontFamily" : "Verdana, sans-serif",
                "fontSize" : "13px"
             },
-            "format" : "{point.y:.0f}",
+            "color" : "#FFFFFF",
             "y" : 10,
-            "enabled" : "true",
+            "align" : "right",
             "rotation" : -90,
-            "color" : "#FFFFFF"
+            "enabled" : "true",
+            "format" : "{point.y:.0f}"
          },
          "data" : [
             [
                "Blog",
-               1187
+               1189
             ],
             [
                "Perl",
@@ -46,18 +51,13 @@
             ],
             [
                "Raku",
-               2732
+               2734
             ]
-         ]
+         ],
+         "name" : "Contributions"
       }
    ],
-   "title" : {
-      "text" : "Perl Weekly Challenge Contributions [2019 - 2020]"
-   },
    "tooltip" : {
       "pointFormat" : "<b>{point.y:.0f}</b>"
-   },
-   "subtitle" : {
-      "text" : "Last updated at 2020-12-18 13:07:35 GMT"
    }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index a24e883e9c..321dfa530a 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,4 +1,472 @@
 {
+   "series" : [
+      {
+         "name" : "Perl Weekly Challenge Languages",
+         "data" : [
+            {
+               "y" : 147,
+               "name" : "#001",
+               "drilldown" : "001"
+            },
+            {
+               "y" : 116,
+               "name" : "#002",
+               "drilldown" : "002"
+            },
+            {
+               "y" : 73,
+               "name" : "#003",
+               "drilldown" : "003"
+            },
+            {
+               "name" : "#004",
+               "drilldown" : "004",
+               "y" : 93
+            },
+            {
+               "y" : 72,
+               "drilldown" : "005",
+               "name" : "#005"
+            },
+            {
+               "name" : "#006",
+               "drilldown" : "006",
+               "y" : 54
+            },
+            {
+               "name" : "#007",
+               "drilldown" : "007",
+               "y" : 61
+            },
+            {
+               "y" : 74,
+               "drilldown" : "008",
+               "name" : "#008"
+            },
+            {
+               "y" : 72,
+               "drilldown" : "009",
+               "name" : "#009"
+            },
+            {
+               "y" : 62,
+               "drilldown" : "010",
+               "name" : "#010"
+            },
+            {
+               "y" : 81,
+               "drilldown" : "011",
+               "name" : "#011"
+            },
+            {
+               "y" : 85,
+               "name" : "#012",
+               "drilldown" : "012"
+            },
+            {
+               "y" : 80,
+               "drilldown" : "013",
+               "name" : "#013"
+            },
+            {
+               "drilldown" : "014",
+               "name" : "#014",
+               "y" : 98
+            },
+            {
+               "y" : 95,
+               "drilldown" : "015",
+               "name" : "#015"
+            },
+            {
+               "name" : "#016",
+               "drilldown" : "016",
+               "y" : 68
+            },
+            {
+               "y" : 81,
+               "drilldown" : "017",
+               "name" : "#017"
+            },
+            {
+               "name" : "#018",
+               "drilldown" : "018",
+               "y" : 78
+            },
+            {
+               "y" : 99,
+               "name" : "#019",
+               "drilldown" : "019"
+            },
+            {
+               "drilldown" : "020",
+               "name" : "#020",
+               "y" : 97
+            },
+            {
+               "drilldown" : "021",
+               "name" : "#021",
+               "y" : 69
+            },
+            {
+               "drilldown" : "022",
+               "name" : "#022",
+               "y" : 63
+            },
+            {
+               "name" : "#023",
+               "drilldown" : "023",
+               "y" : 93
+            },
+            {
+               "y" : 72,
+               "drilldown" : "024",
+               "name" : "#024"
+            },
+            {
+               "y" : 55,
+               "drilldown" : "025",
+               "name" : "#025"
+            },
+            {
+               "y" : 72,
+               "drilldown" : "026",
+               "name" : "#026"
+            },
+            {
+               "drilldown" : "027",
+               "name" : "#027",
+               "y" : 58
+            },
+            {
+               "name" : "#028",
+               "drilldown" : "028",
+               "y" : 80
+            },
+            {
+               "drilldown" : "029",
+               "name" : "#029",
+               "y" : 79
+            },
+            {
+               "drilldown" : "030",
+               "name" : "#030",
+               "y" : 117
+            },
+            {
+               "y" : 89,
+               "name" : "#031",
+               "drilldown" : "031"
+            },
+            {
+               "y" : 94,
+               "name" : "#032",
+               "drilldown" : "032"
+            },
+            {
+               "name" : "#033",
+               "drilldown" : "033",
+               "y" : 110
+            },
+            {
+               "name" : "#034",
+               "drilldown" : "034",
+               "y" : 62
+            },
+            {
+               "name" : "#035",
+               "drilldown" : "035",
+               "y" : 62
+            },
+            {
+               "y" : 66,
+               "drilldown" : "036",
+               "name" : "#036"
+            },
+            {
+               "name" : "#037",
+               "drilldown" : "037",
+               "y" : 67
+            },
+            {
+               "y" : 65,
+               "drilldown" : "038",
+               "name" : "#038"
+            },
+            {
+               "y" : 62,
+               "drilldown" : "039",
+               "name" : "#039"
+            },
+            {
+               "y" : 73,
+               "drilldown" : "040",
+               "name" : "#040"
+            },
+            {
+               "name" : "#041",
+               "drilldown" : "041",
+               "y" : 76
+            },
+            {
+               "drilldown" : "042",
+               "name" : "#042",
+               "y" : 90
+            },
+            {
+               "y" : 68,
+               "drilldown" : "043",
+               "name" : "#043"
+            },
+            {
+               "drilldown" : "044",
+               "name" : "#044",
+               "y" : 84
+            },
+            {
+               "y" : 96,
+               "name" : "#045",
+               "drilldown" : "045"
+            },
+            {
+               "y" : 87,
+               "drilldown" : "046",
+               "name" : "#046"
+            },
+            {
+               "drilldown" : "047",
+               "name" : "#047",
+               "y" : 84
+            },
+            {
+               "y" : 108,
+               "name" : "#048",
+               "drilldown" : "048"
+            },
+            {
+               "y" : 85,
+               "drilldown" : "049",
+               "name" : "#049"
+            },
+            {
+               "y" : 98,
+               "name" : "#050",
+               "drilldown" : "050"
+            },
+            {
+               "name" : "#051",
+               "drilldown" : "051",
+               "y" : 89
+            },
+            {
+               "y" : 91,
+               "name" : "#052",
+               "drilldown" : "052"
+            },
+            {
+               "name" : "#053",
+               "drilldown" : "053",
+               "y" : 101
+            },
+            {
+               "y" : 103,
+               "name" : "#054",
+               "drilldown" : "054"
+            },
+            {
+               "name" : "#055",
+               "drilldown" : "055",
+               "y" : 88
+            },
+            {
+               "y" : 95,
+               "name" : "#056",
+               "drilldown" : "056"
+            },
+            {
+               "name" : "#057",
+               "drilldown" : "057",
+               "y" : 80
+            },
+            {
+               "y" : 69,
+               "drilldown" : "058",
+               "name" : "#058"
+            },
+            {
+               "y" : 89,
+               "drilldown" : "059",
+               "name" : "#059"
+            },
+            {
+               "y" : 85,
+               "name" : "#060",
+               "drilldown" : "060"
+            },
+            {
+               "y" : 81,
+               "name" : "#061",
+               "drilldown" : "061"
+            },
+            {
+               "y" : 54,
+               "drilldown" : "062",
+               "name" : "#062"
+            },
+            {
+               "y" : 89,
+               "drilldown" : "063",
+               "name" : "#063"
+            },
+            {
+               "name" : "#064",
+               "drilldown" : "064",
+               "y" : 80
+            },
+            {
+               "y" : 73,
+               "name" : "#065",
+               "drilldown" : "065"
+            },
+            {
+               "name" : "#066",
+               "drilldown" : "066",
+               "y" : 84
+            },
+            {
+               "name" : "#067",
+               "drilldown" : "067",
+               "y" : 90
+            },
+            {
+               "name" : "#068",
+               "drilldown" : "068",
+               "y" : 75
+            },
+            {
+               "y" : 83,
+               "drilldown" : "069",
+               "name" : "#069"
+            },
+            {
+               "y" : 93,
+               "name" : "#070",
+               "drilldown" : "070"
+            },
+            {
+               "y" : 78,
+               "name" : "#071",
+               "drilldown" : "071"
+            },
+            {
+               "drilldown" : "072",
+               "name" : "#072",
+               "y" : 112
+            },
+            {
+               "y" : 110,
+               "drilldown" : "073",
+               "name" : "#073"
+            },
+            {
+               "drilldown" : "074",
+               "name" : "#074",
+               "y" : 115
+            },
+            {
+               "y" : 113,
+               "drilldown" : "075",
+               "name" : "#075"
+            },
+            {
+               "y" : 95,
+               "name" : "#076",
+               "drilldown" : "076"
+            },
+            {
+               "y" : 96,
+               "drilldown" : "077",
+               "name" : "#077"
+            },
+            {
+               "drilldown" : "078",
+               "name" : "#078",
+               "y" : 125
+            },
+            {
+               "drilldown" : "079",
+               "name" : "#079",
+               "y" : 120
+            },
+            {
+               "y" : 125,
+               "name" : "#080",
+               "drilldown" : "080"
+            },
+            {
+               "drilldown" : "081",
+               "name" : "#081",
+               "y" : 112
+            },
+            {
+               "y" : 112,
+               "name" : "#082",
+               "drilldown" : "082"
+            },
+            {
+               "y" : 125,
+               "name" : "#083",
+               "drilldown" : "083"
+            },
+            {
+               "y" : 117,
+               "drilldown" : "084",
+               "name" : "#084"
+            },
+            {
+               "drilldown" : "085",
+               "name" : "#085",
+               "y" : 112
+            },
+            {
+               "drilldown" : "086",
+               "name" : "#086",
+               "y" : 102
+            },
+            {
+               "name" : "#087",
+               "drilldown" : "087",
+               "y" : 99
+            },
+            {
+               "drilldown" : "088",
+               "name" : "#088",
+               "y" : 119
+            },
+            {
+               "y" : 111,
+               "drilldown" : "089",
+               "name" : "#089"
+            },
+            {
+               "y" : 110,
+               "drilldown" : "090",
+               "name" : "#090"
+            },
+            {
+               "y" : 53,
+               "drilldown" : "091",
+               "name" : "#091"
+            }
+         ],
+         "colorByPoint" : "true"
+      }
+   ],
+   "tooltip" : {
+      "pointFormat" : "<span style=\"color:{point.color}\">Challenge {point.name}</span>: <b>{point.y:f}</b><br/>",
+      "headerFormat" : "<span style=\"font-size:11px\"></span>",
+      "followPointer" : "true"
+   },
    "drilldown" : {
       "series" : [
          {
@@ -16,10 +484,11 @@
                   11
                ]
             ],
-            "id" : "001",
-            "name" : "001"
+            "name" : "001",
+            "id" : "001"
          },
          {
+            "id" : "002",
             "name" : "002",
             "data" : [
                [
@@ -34,8 +503,7 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "002"
+            ]
          },
          {
             "data" : [
@@ -52,11 +520,11 @@
                   9
                ]
             ],
-            "id" : "003",
-            "name" : "003"
+            "name" : "003",
+            "id" : "003"
          },
          {
-            "id" : "004",
+            "name" : "004",
             "data" : [
                [
                   "Perl",
@@ -71,9 +539,11 @@
                   10
                ]
             ],
-            "name" : "004"
+            "id" : "004"
          },
          {
+            "id" : "005",
+            "name" : "005",
             "data" : [
                [
                   "Perl",
@@ -87,9 +557,7 @@
                   "Blog",
                   12
                ]
-            ],
-            "id" : "005",
-            "name" : "005"
+            ]
          },
          {
             "data" : [
@@ -106,11 +574,10 @@
                   7
                ]
             ],
-            "id" : "006",
-            "name" : "006"
+            "name" : "006",
+            "id" : "006"
          },
          {
-            "name" : "007",
             "data" : [
                [
                   "Perl",
@@ -125,6 +592,7 @@
                   10
                ]
             ],
+            "name" : "007",
             "id" : "007"
          },
          {
@@ -146,6 +614,8 @@
             "id" : "008"
          },
          {
+            "id" : "009",
+            "name" : "009",
             "data" : [
                [
                   "Perl",
@@ -159,11 +629,10 @@
                   "Blog",
                   13
                ]
-            ],
-            "id" : "009",
-            "name" : "009"
+            ]
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+            "id" : "010",
             "name" : "010",
             "data" : [
                [
@@ -178,11 +647,10 @@
                   "Blog",
                   11
                ]
-            ],
-            "id" : "010"
+            ]
          },
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-            "name" : "011",
+            "id" : "011",
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                [
                   "Perl",
@@ -197,10 +665,9 @@
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                ]
             ],
-            "id" : "011"
+            "name" : "011"
          },
          {
-            "name" : "012",
             "data" : [
                [
                   "Perl",
@@ -215,6 +682,7 @@
                   11
                ]
             ],
+            "name" : "012",
             "id" : "012"
          },
          {
@@ -250,11 +718,10 @@
                   15
                ]
             ],
-            "id" : "014",
-            "name" : "014"
+            "name" : "014",
+            "id" : "014"
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             "id" : "015",
             "data" : [
                [
@@ -269,7 +736,8 @@
                   "Blog",
                   15
                ]
-            ]
+            ],
+            "name" : "015"
          },
          {
             "data" : [
@@ -286,11 +754,12 @@
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