- Added solutions by Luca Ferrari.

13 files changed, 986 insertions, 967 deletions

diff --git a/challenge-067/luca-ferrari/blog-1.txt b/challenge-067/luca-ferrari/blog1.txt
index 53886516ee..53886516ee 100644
--- a/challenge-067/luca-ferrari/blog-1.txt
+++ b/challenge-067/luca-ferrari/blog1.txt
diff --git a/challenge-067/luca-ferrari/blog-2.txt b/challenge-067/luca-ferrari/blog2.txt
index f4a8e9f455..f4a8e9f455 100644
--- a/challenge-067/luca-ferrari/blog-2.txt
+++ b/challenge-067/luca-ferrari/blog2.txt
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index 0f54c88f1d..38aab70903 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,33 +1,29 @@
 {
+   "title" : {
+      "text" : "Perl Weekly Challenge - 067"
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "subtitle" : {
+      "text" : "[Champions: 4] Last updated at 2020-06-29 12:14:32 GMT"
+   },
    "xAxis" : {
       "type" : "category"
    },
-   "legend" : {
-      "enabled" : 0
-   },
    "yAxis" : {
       "title" : {
          "text" : "Total Solutions"
       }
    },
    "tooltip" : {
+      "followPointer" : 1,
       "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
-      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
-      "followPointer" : 1
-   },
-   "title" : {
-      "text" : "Perl Weekly Challenge - 067"
-   },
-   "chart" : {
-      "type" : "column"
-   },
-   "subtitle" : {
-      "text" : "[Champions: 3] Last updated at 2020-06-29 12:10:04 GMT"
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>"
    },
    "series" : [
       {
          "colorByPoint" : 1,
-         "name" : "Perl Weekly Challenge - 067",
          "data" : [
             {
                "y" : 2,
@@ -35,18 +31,27 @@
                "name" : "Andrew Shitov"
             },
             {
+               "drilldown" : "Luca Ferrari",
+               "name" : "Luca Ferrari",
+               "y" : 4
+            },
+            {
+               "y" : 2,
                "name" : "Roger Bell_West",
-               "drilldown" : "Roger Bell_West",
-               "y" : 2
+               "drilldown" : "Roger Bell_West"
             },
             {
-               "name" : "Simon Proctor",
+               "y" : 2,
                "drilldown" : "Simon Proctor",
-               "y" : 2
+               "name" : "Simon Proctor"
             }
-         ]
+         ],
+         "name" : "Perl Weekly Challenge - 067"
       }
    ],
+   "legend" : {
+      "enabled" : 0
+   },
    "plotOptions" : {
       "series" : {
          "dataLabels" : {
@@ -59,14 +64,28 @@
    "drilldown" : {
       "series" : [
          {
+            "id" : "Andrew Shitov",
+            "name" : "Andrew Shitov",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ],
-            "name" : "Andrew Shitov",
-            "id" : "Andrew Shitov"
+            ]
+         },
+         {
+            "name" : "Luca Ferrari",
+            "id" : "Luca Ferrari",
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  2
+               ]
+            ]
          },
          {
             "data" : [
@@ -79,14 +98,14 @@
             "name" : "Roger Bell_West"
          },
          {
+            "id" : "Simon Proctor",
+            "name" : "Simon Proctor",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ],
-            "id" : "Simon Proctor",
-            "name" : "Simon Proctor"
+            ]
          }
       ]
    }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index 8501b8db66..9d7c56ffd5 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,53 +1,37 @@
 {
-   "yAxis" : {
-      "title" : {
-         "text" : null
-      },
-      "min" : 0
+   "subtitle" : {
+      "text" : "Last updated at 2020-06-29 12:14:32 GMT"
    },
    "xAxis" : {
+      "type" : "category",
       "labels" : {
          "style" : {
             "fontSize" : "13px",
             "fontFamily" : "Verdana, sans-serif"
          }
-      },
-      "type" : "category"
-   },
-   "legend" : {
-      "enabled" : "false"
+      }
    },
-   "tooltip" : {
-      "pointFormat" : "<b>{point.y:.0f}</b>"
+   "title" : {
+      "text" : "Perl Weekly Challenge Contributions [2019 - 2020]"
    },
    "chart" : {
       "type" : "column"
    },
-   "title" : {
-      "text" : "Perl Weekly Challenge Contributions [2019 - 2020]"
+   "tooltip" : {
+      "pointFormat" : "<b>{point.y:.0f}</b>"
    },
-   "subtitle" : {
-      "text" : "Last updated at 2020-06-29 12:10:04 GMT"
+   "yAxis" : {
+      "min" : 0,
+      "title" : {
+         "text" : null
+      }
    },
    "series" : [
       {
-         "dataLabels" : {
-            "style" : {
-               "fontFamily" : "Verdana, sans-serif",
-               "fontSize" : "13px"
-            },
-            "y" : 10,
-            "enabled" : "true",
-            "format" : "{point.y:.0f}",
-            "rotation" : -90,
-            "color" : "#FFFFFF",
-            "align" : "right"
-         },
-         "name" : "Contributions",
          "data" : [
             [
                "Blog",
-               774
+               776
             ],
             [
                "Perl",
@@ -55,9 +39,25 @@
             ],
             [
                "Raku",
-               1755
+               1757
             ]
-         ]
+         ],
+         "name" : "Contributions",
+         "dataLabels" : {
+            "align" : "right",
+            "enabled" : "true",
+            "style" : {
+               "fontSize" : "13px",
+               "fontFamily" : "Verdana, sans-serif"
+            },
+            "color" : "#FFFFFF",
+            "y" : 10,
+            "format" : "{point.y:.0f}",
+            "rotation" : -90
+         }
       }
-   ]
+   ],
+   "legend" : {
+      "enabled" : "false"
+   }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index b2dfdcb6f9..b0f741f42e 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,362 +1,20 @@
 {
    "subtitle" : {
-      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2020-06-29 12:10:04 GMT"
+      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2020-06-29 12:14:32 GMT"
    },
-   "series" : [
-      {
-         "colorByPoint" : "true",
-         "name" : "Perl Weekly Challenge Languages",
-         "data" : [
-            {
-               "drilldown" : "001",
-               "name" : "#001",
-               "y" : 142
-            },
-            {
-               "drilldown" : "002",
-               "name" : "#002",
-               "y" : 109
-            },
-            {
-               "name" : "#003",
-               "drilldown" : "003",
-               "y" : 71
-            },
-            {
-               "y" : 91,
-               "name" : "#004",
-               "drilldown" : "004"
-            },
-            {
-               "y" : 72,
-               "drilldown" : "005",
-               "name" : "#005"
-            },
-            {
-               "drilldown" : "006",
-               "name" : "#006",
-               "y" : 52
-            },
-            {
-               "y" : 59,
-               "drilldown" : "007",
-               "name" : "#007"
-            },
-            {
-               "drilldown" : "008",
-               "name" : "#008",
-               "y" : 72
-            },
-            {
-               "y" : 68,
-               "drilldown" : "009",
-               "name" : "#009"
-            },
-            {
-               "y" : 60,
-               "drilldown" : "010",
-               "name" : "#010"
-            },
-            {
-               "y" : 79,
-               "name" : "#011",
-               "drilldown" : "011"
-            },
-            {
-               "y" : 83,
-               "name" : "#012",
-               "drilldown" : "012"
-            },
-            {
-               "name" : "#013",
-               "drilldown" : "013",
-               "y" : 76
-            },
-            {
-               "y" : 96,
-               "name" : "#014",
-               "drilldown" : "014"
-            },
-            {
-               "name" : "#015",
-               "drilldown" : "015",
-               "y" : 93
-            },
-            {
-               "y" : 66,
-               "drilldown" : "016",
-               "name" : "#016"
-            },
-            {
-               "y" : 79,
-               "drilldown" : "017",
-               "name" : "#017"
-            },
-            {
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-               "drilldown" : "018",
-               "name" : "#018"
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-            {
-               "name" : "#019",
-               "drilldown" : "019",
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-               "drilldown" : "022",
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-               "drilldown" : "054",
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-               "name" : "#062"
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-               "drilldown" : "063",
-               "name" : "#063"
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-               "drilldown" : "064",
-               "y" : 76
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-               "drilldown" : "065",
-               "name" : "#065",
-               "y" : 71
-            },
-            {
-               "drilldown" : "066",
-               "name" : "#066",
-               "y" : 81
-            },
-            {
-               "y" : 6,
-               "name" : "#067",
-               "drilldown" : "067"
-            }
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-      "series" : {
-         "borderWidth" : 0,
-         "dataLabels" : {
-            "format" : "{point.y}",
-            "enabled" : 1
-         }
-      }
+   "xAxis" : {
+      "type" : "category"
+   },
+   "title" : {
+      "text" : "Perl Weekly Challenge Language"
+   },
+   "chart" : {
+      "type" : "column"
    },
    "drilldown" : {
       "series" : [
          {
+            "name" : "001",
             "id" : "001",
             "data" : [
                [
@@ -371,10 +29,10 @@
                   "Blog",
                   11
                ]
-            ],
-            "name" : "001"
+            ]
          },
          {
+            "name" : "002",
             "id" : "002",
             "data" : [
                [
@@ -389,10 +47,11 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "002"
+            ]
          },
          {
+            "id" : "003",
+            "name" : "003",
             "data" : [
                [
                   "Perl",
@@ -406,11 +65,11 @@
                   "Blog",
                   9
                ]
-            ],
-            "name" : "003",
-            "id" : "003"
+            ]
          },
          {
+            "id" : "004",
+            "name" : "004",
             "data" : [
                [
                   "Perl",
@@ -424,9 +83,7 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "004",
-            "id" : "004"
+            ]
          },
          {
             "data" : [
@@ -447,6 +104,7 @@
             "name" : "005"
          },
          {
+            "name" : "006",
             "id" : "006",
             "data" : [
                [
@@ -461,10 +119,11 @@
                   "Blog",
                   7
                ]
-            ],
-            "name" : "006"
+            ]
          },
          {
+            "name" : "007",
+            "id" : "007",
             "data" : [
                [
                   "Perl",
@@ -478,9 +137,7 @@
                   "Blog",
                   10
                ]
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-            "id" : "007"
+            ]
          },
          {
             "data" : [
@@ -533,10 +190,12 @@
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                ]
             ],
-            "name" : "010",
-            "id" : "010"
+            "id" : "010",
+            "name" : "010"
          },
          {
+            "id" : "011",
+            "name" : "011",
             "data" : [
                [
                   "Perl",
@@ -550,11 +209,10 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "011",
-            "name" : "011"
+            ]
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+            "id" : "012",
             "name" : "012",
             "data" : [
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@@ -569,11 +227,9 @@
                   "Blog",
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                ]
-            ],
-            "id" : "012"
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          {
-            "id" : "013",
             "data" : [
                [
                   "Perl",
@@ -588,6 +244,7 @@
                   13
                ]
             ],
+            "id" : "013",
             "name" : "013"
          },
          {
@@ -609,6 +266,7 @@
             "id" : "014"
          },
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+            "id" : "015",
             "name" : "015",
             "data" : [
                [
@@ -623,11 +281,9 @@
                   "Blog",
                   15
                ]
-            ],
-            "id" : "015"
+            ]
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-            "name" : "016",
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                [
                   "Perl",
@@ -642,9 +298,12 @@
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                ]
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          },
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+            "name" : "017",
+            "id" : "017",
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@@ -658,12 +317,9 @@
                   "Blog",
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                ]
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-            "name" : "017"
+            ]
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             "data" : [
                [
                   "Perl",
@@ -678,10 +334,10 @@
                   14
                ]
             ],
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+            "name" : "018",
+            "id" : "018"
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-            "id" : "019",
             "data" : [
                [
                   "Perl",
@@ -696,9 +352,12 @@
                   13
                ]
             ],
+            "id" : "019",
             "name" : "019"
          },
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+            "id" : "020",
+            "name" : "020",
             "data" : [
                [
                   "Perl",
@@ -712,9 +371,7 @@
                   "Blog",
                   13
                ]
-            ],
-            "id" : "020",
-            "name" : "020"
+            ]
          },
          {
             "data" : [
@@ -767,11 +424,12 @@
                   12
                ]
             ],
-            "id" : "023",
-            "name" : "023"
+            "name" : "023",
+            "id" : "023"
          },
          {
             "name" : "024",
+            "id" : "024",
             "data" : [
                [
                   "Perl",
@@ -785,11 +443,9 @@
                   "Blog",
                   11
                ]
-            ],
-            "id" : "024"
+            ]
          },
          {
-            "name" : "025",
             "data" : [
                [
                   "Perl",
@@ -804,7 +460,8 @@
                   12
                ]
             ],
-            "id" : "025"
+            "id" : "025",
+            "name" : "025"
          },
          {
             "data" : [
@@ -821,8 +478,8 @@
                   10
                ]
             ],
-            "id" : "026",
-            "name" : "026"
+            "name" : "026",
+            "id" : "026"
          },
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             "data" : [
@@ -843,7 +500,6 @@
             "name" : "027"
          },
          {
-            "id" : "028",
             "data" : [
                [
                   "Perl",
@@ -858,6 +514,7 @@
                   9
                ]
             ],
+            "id" : "028",
             "name" : "028"
          },
          {
@@ -875,8 +532,8 @@
                   12
                ]
             ],
-            "id" : "029",
-            "name" : "029"
+            "name" : "029",
+            "id" : "029"
          },
          {
             "data" : [
@@ -897,6 +554,7 @@
             "name" : "030"
          },
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+            "name" : "031",
             "id" : "031",
             "data" : [
                [
@@ -911,10 +569,11 @@
                   "Blog",
                   9
                ]
-            ],
-            "name" : "031"
+            ]
          },
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+            "name" : "032",
+            "id" : "032",
             "data" : [
                [
                   "Perl",
@@ -928,12 +587,9 @@
                   "Blog",
                   10
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-            ],
-            "name" : "032",
-            "id" : "032"
+            ]
          },
          {
-            "name" : "033",
             "data" : [
                [
                   "Perl",
@@ -948,7 +604,8 @@
                   10
                ]
             ],
-            "id" : "033"
+            "id" : "033",
+            "name" : "033"
          },
          {
             "data" : [
@@ -965,10 +622,11 @@
                   11
                ]
             ],
-            "name" : "034",
-            "id" : "034"
+            "id" : "034",
+            "name" : "034"
          },
          {
+            "id" : "035",
             "name" : "035",
             "data" : [
                [
@@ -983,11 +641,9 @@
                   "Blog",
                   9
                ]
-            ],
-            "id" : "035"
+            ]
          },
          {
-            "name" : "036",
             "data" : [
                [
                   "Perl",
@@ -1002,10 +658,12 @@
                   11
                ]
             ],
-            "id" : "036"
+            "id" : "036",
+            "name" : "036"
          },
          {
             "id" : "037",
+            "name" : "037",
             "data" : [
                [
                   "Perl",
@@ -1019,10 +677,11 @@
                   "Blog",
                   9
                ]
-            ],
-            "name" : "037"
+            ]
          },
          {
+            "id" : "038",
+            "name" : "038",
             "data" : [
                [
                   "Perl",
@@ -1036,9 +695,7 @@
                   "Blog",
                   12
                ]
-            ],
-            "id" : "038",
-            "name" : "038"
+            ]
          },
          {
             "data" : [
@@ -1055,8 +712,8 @@
                   12
                ]
             ],
-            "id" : "039",
-            "name" : "039"
+            "name" : "039",
+            "id" : "039"
          },
          {
             "data" : [
@@ -1073,8 +730,8 @@
                   10
                ]
             ],
-            "name" : "040",
-            "id" : "040"
+            "id" : "040",
+            "name" : "040"
          },
          {
             "data" : [
@@ -1095,7 +752,6 @@
             "id" : "041"
          },
          {
-            "id" : "042",
             "data" : [
                [
                   "Perl",
@@ -1110,9 +766,12 @@
                   11
                ]
             ],
-            "name" : "042"
+            "name" : "042",
+            "id" : "042"
          },
          {
+            "id" : "043",
+            "name" : "043",
             "data" : [
                [
                   "Perl",
@@ -1126,9 +785,7 @@
                   "Blog",
                   11
                ]
-            ],
-            "id" : "043",
-            "name" : "043"
+            ]
          },
          {
             "data" : [
@@ -1149,7 +806,6 @@
             "id" : "044"
          },
          {
-            "name" : "045",
             "data" : [
                [
                   "Perl",
@@ -1164,10 +820,10 @@
                   11
                ]
             ],
-            "id" : "045"
+            "id" : "045",
+            "name" : "045"
          },
          {
-            "id" : "046",
             "data" : [
                [
                   "Perl",
@@ -1182,9 +838,12 @@
                   10
                ]
             ],
-            "name" : "046"
+            "name" : "046",
+            "id" : "046"
          },
          {
+            "name" : "047",
+            "id" : "047",
             "data" : [
                [
                   "Perl",
@@ -1198,11 +857,11 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "047",
-            "name" : "047"
+            ]
          },
          {
+            "name" : "048",
+            "id" : "048",
             "data" : [
                [
                   "Perl",
@@ -1216,9 +875,7 @@
                   "Blog",
                   12
                ]
-            ],
-            "id" : "048",
-            "name" : "048"
+            ]
          },
          {
             "data" : [