- Added solution by Andrew Shitov.

15 files changed, 2184 insertions, 2098 deletions

diff --git a/stats/pwc-challenge-141.json b/stats/pwc-challenge-141.json
new file mode 100644
index 0000000000..0df7255dde
--- /dev/null
+++ b/stats/pwc-challenge-141.json
@@ -0,0 +1,619 @@
+{
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
+   "legend" : {
+      "enabled" : 0
+   },
+   "drilldown" : {
+      "series" : [
+         {
+            "name" : "Abigail",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  2
+               ]
+            ],
+            "id" : "Abigail"
+         },
+         {
+            "name" : "Adam Russell",
+            "id" : "Adam Russell",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ]
+         },
+         {
+            "id" : "Alexander Karelas",
+            "data" : [
+               [
+                  "Perl",
+                  1
+               ]
+            ],
+            "name" : "Alexander Karelas"
+         },
+         {
+            "id" : "Alexander Pankoff",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "name" : "Alexander Pankoff"
+         },
+         {
+            "name" : "Arne Sommer",
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Arne Sommer"
+         },
+         {
+            "name" : "Athanasius",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "id" : "Athanasius"
+         },
+         {
+            "id" : "Colin Crain",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "name" : "Colin Crain"
+         },
+         {
+            "id" : "Dave Jacoby",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "name" : "Dave Jacoby"
+         },
+         {
+            "name" : "David Santiago",
+            "id" : "David Santiago",
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ]
+            ]
+         },
+         {
+            "id" : "Duncan C. White",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "name" : "Duncan C. White"
+         },
+         {
+            "name" : "E. Choroba",
+            "id" : "E. Choroba",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ]
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  2
+               ]
+            ],
+            "id" : "Flavio Poletti",
+            "name" : "Flavio Poletti"
+         },
+         {
+            "name" : "Jake",
+            "data" : [
+               [
+                  "Perl",
+                  1
+               ]
+            ],
+            "id" : "Jake"
+         },
+         {
+            "name" : "Jaldhar H. Vyas",
+            "id" : "Jaldhar H. Vyas",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ]
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "id" : "Jan Krnavek",
+            "name" : "Jan Krnavek"
+         },
+         {
+            "name" : "Jorg Sommrey",
+            "id" : "Jorg Sommrey",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ]
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Kaushik Tunuguntla",
+            "name" : "Kaushik Tunuguntla"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Laurent Rosenfeld",
+            "name" : "Laurent Rosenfeld"
+         },
+         {
+            "name" : "Lubos Kolouch",
+            "id" : "Lubos Kolouch",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ]
+         },
+         {
+            "name" : "Luca Ferrari",
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  4
+               ]
+            ],
+            "id" : "Luca Ferrari"
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "id" : "Mark Anderson",
+            "name" : "Mark Anderson"
+         },
+         {
+            "id" : "Mohammad S Anwar",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "name" : "Mohammad S Anwar"
+         },
+         {
+            "name" : "Niels van Dijke",
+            "id" : "Niels van Dijke",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ]
+         },
+         {
+            "name" : "Paul Fajman",
+            "id" : "Paul Fajman",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ]
+         },
+         {
+            "id" : "Paulo Custodio",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "name" : "Paulo Custodio"
+         },
+         {
+            "name" : "Pete Houston",
+            "id" : "Pete Houston",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ]
+         },
+         {
+            "name" : "Peter Campbell Smith",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Peter Campbell Smith"
+         },
+         {
+            "id" : "Robert DiCicco",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "name" : "Robert DiCicco"
+         },
+         {
+            "id" : "Roger Bell_West",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "name" : "Roger Bell_West"
+         },
+         {
+            "name" : "Simon Green",
+            "id" : "Simon Green",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ]
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "id" : "Simon Proctor",
+            "name" : "Simon Proctor"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "id" : "Ulrich Rieke",
+            "name" : "Ulrich Rieke"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "W. Luis Mochan",
+            "name" : "W. Luis Mochan"
+         }
+      ]
+   },
+   "xAxis" : {
+      "type" : "category"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge - 141"
+   },
+   "subtitle" : {
+      "text" : "[Champions: 33] Last updated at 2021-12-06 18:39:53 GMT"
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "series" : [
+      {
+         "data" : [
+            {
+               "name" : "Abigail",
+               "y" : 4,
+               "drilldown" : "Abigail"
+            },
+            {
+               "drilldown" : "Adam Russell",
+               "y" : 3,
+               "name" : "Adam Russell"
+            },
+            {
+               "y" : 1,
+               "name" : "Alexander Karelas",
+               "drilldown" : "Alexander Karelas"
+            },
+            {
+               "y" : 2,
+               "name" : "Alexander Pankoff",
+               "drilldown" : "Alexander Pankoff"
+            },
+            {
+               "name" : "Arne Sommer",
+               "y" : 3,
+               "drilldown" : "Arne Sommer"
+            },
+            {
+               "name" : "Athanasius",
+               "y" : 4,
+               "drilldown" : "Athanasius"
+            },
+            {
+               "drilldown" : "Colin Crain",
+               "y" : 2,
+               "name" : "Colin Crain"
+            },
+            {
+               "name" : "Dave Jacoby",
+               "y" : 3,
+               "drilldown" : "Dave Jacoby"
+            },
+            {
+               "drilldown" : "David Santiago",
+               "y" : 2,
+               "name" : "David Santiago"
+            },
+            {
+               "name" : "Duncan C. White",
+               "y" : 2,
+               "drilldown" : "Duncan C. White"
+            },
+            {
+               "drilldown" : "E. Choroba",
+               "y" : 2,
+               "name" : "E. Choroba"
+            },
+            {
+               "y" : 6,
+               "name" : "Flavio Poletti",
+               "drilldown" : "Flavio Poletti"
+            },
+            {
+               "drilldown" : "Jake",
+               "name" : "Jake",
+               "y" : 1
+            },
+            {
+               "drilldown" : "Jaldhar H. Vyas",
+               "name" : "Jaldhar H. Vyas",
+               "y" : 5
+            },
+            {
+               "drilldown" : "Jan Krnavek",
+               "name" : "Jan Krnavek",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Jorg Sommrey",
+               "y" : 2,
+               "name" : "Jorg Sommrey"
+            },
+            {
+               "y" : 3,
+               "name" : "Kaushik Tunuguntla",
+               "drilldown" : "Kaushik Tunuguntla"
+            },
+            {
+               "drilldown" : "Laurent Rosenfeld",
+               "name" : "Laurent Rosenfeld",
+               "y" : 5
+            },
+            {
+               "drilldown" : "Lubos Kolouch",
+               "y" : 2,
+               "name" : "Lubos Kolouch"
+            },
+            {
+               "y" : 6,
+               "name" : "Luca Ferrari",
+               "drilldown" : "Luca Ferrari"
+            },
+            {
+               "drilldown" : "Mark Anderson",
+               "y" : 2,
+               "name" : "Mark Anderson"
+            },
+            {
+               "y" : 4,
+               "name" : "Mohammad S Anwar",
+               "drilldown" : "Mohammad S Anwar"
+            },
+            {
+               "y" : 2,
+               "name" : "Niels van Dijke",
+               "drilldown" : "Niels van Dijke"
+            },
+            {
+               "y" : 2,
+               "name" : "Paul Fajman",
+               "drilldown" : "Paul Fajman"
+            },
+            {
+               "drilldown" : "Paulo Custodio",
+               "name" : "Paulo Custodio",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Pete Houston",
+               "y" : 2,
+               "name" : "Pete Houston"
+            },
+            {
+               "name" : "Peter Campbell Smith",
+               "y" : 3,
+               "drilldown" : "Peter Campbell Smith"
+            },
+            {
+               "name" : "Robert DiCicco",
+               "y" : 2,
+               "drilldown" : "Robert DiCicco"
+            },
+            {
+               "drilldown" : "Roger Bell_West",
+               "y" : 4,
+               "name" : "Roger Bell_West"
+            },
+            {
+               "drilldown" : "Simon Green",
+               "y" : 3,
+               "name" : "Simon Green"
+            },
+            {
+               "name" : "Simon Proctor",
+               "y" : 2,
+               "drilldown" : "Simon Proctor"
+            },
+            {
+               "drilldown" : "Ulrich Rieke",
+               "y" : 4,
+               "name" : "Ulrich Rieke"
+            },
+            {
+               "drilldown" : "W. Luis Mochan",
+               "y" : 3,
+               "name" : "W. Luis Mochan"
+            }
+         ],
+         "colorByPoint" : 1,
+         "name" : "The Weekly Challenge - 141"
+      }
+   ],
+   "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
+   },
+   "plotOptions" : {
+      "series" : {
+         "borderWidth" : 0,
+         "dataLabels" : {
+            "format" : "{point.y}",
+            "enabled" : 1
+         }
+      }
+   }
+}
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index e131274dc2..76953b1cfe 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,619 +1,63 @@
 {
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
+   "title" : {
+      "text" : "The Weekly Challenge - 142"
+   },
    "legend" : {
       "enabled" : 0
    },
-   "title" : {
-      "text" : "The Weekly Challenge - 141"
+   "tooltip" : {
+      "followPointer" : 1,
+      "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/>"
    },
-   "xAxis" : {
-      "type" : "category"
+   "subtitle" : {
+      "text" : "[Champions: 1] Last updated at 2021-12-06 18:42:38 GMT"
    },
    "drilldown" : {
       "series" : [
          {
+            "id" : "Andrew Shitov",
             "data" : [
                [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  2
-               ]
-            ],
-            "id" : "Abigail",
-            "name" : "Abigail"
-         },
-         {
-            "name" : "Adam Russell",
-            "id" : "Adam Russell",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ]
-         },
-         {
-            "name" : "Alexander Karelas",
-            "data" : [
-               [
-                  "Perl",
-                  1
-               ]
-            ],
-            "id" : "Alexander Karelas"
-         },
-         {
-            "name" : "Alexander Pankoff",
-            "id" : "Alexander Pankoff",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ]
-         },
-         {
-            "name" : "Arne Sommer",
-            "data" : [
-               [
-                  "Raku",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Arne Sommer"
-         },
-         {
-            "id" : "Athanasius",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Raku",
-                  2
-               ]
-            ],
-            "name" : "Athanasius"
-         },
-         {
-            "name" : "Colin Crain",
-            "id" : "Colin Crain",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ]
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Dave Jacoby",
-            "name" : "Dave Jacoby"
-         },
-         {
-            "data" : [
-               [
-                  "Raku",
-                  2
-               ]
-            ],
-            "id" : "David Santiago",
-            "name" : "David Santiago"
-         },
-         {
-            "name" : "Duncan C. White",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ],
-            "id" : "Duncan C. White"
-         },
-         {
-            "name" : "E. Choroba",
-            "id" : "E. Choroba",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ]
-         },
-         {
-            "id" : "Flavio Poletti",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Raku",
-                  2
-               ],
-               [
-                  "Blog",
-                  2
-               ]
-            ],
-            "name" : "Flavio Poletti"
-         },
-         {
-            "id" : "Jake",
-            "data" : [
-               [
-                  "Perl",
-                  1
-               ]
-            ],
-            "name" : "Jake"
-         },
-         {
-            "name" : "Jaldhar H. Vyas",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Raku",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Jaldhar H. Vyas"
-         },
-         {
-            "name" : "Jan Krnavek",
-            "data" : [
-               [
-                  "Raku",
-                  2
-               ]
-            ],
-            "id" : "Jan Krnavek"
-         },
-         {
-            "id" : "Jorg Sommrey",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ],
-            "name" : "Jorg Sommrey"
-         },
-         {
-            "name" : "Kaushik Tunuguntla",
-            "id" : "Kaushik Tunuguntla",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ]
-         },
-         {
-            "name" : "Laurent Rosenfeld",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
                   "Raku",
-                  2
-               ],
-               [
-                  "Blog",
                   1
                ]
             ],
-            "id" : "Laurent Rosenfeld"
-         },
-         {
-            "name" : "Lubos Kolouch",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ],
-            "id" : "Lubos Kolouch"
-         },
-         {
-            "id" : "Luca Ferrari",
-            "data" : [
-               [
-                  "Raku",
-                  2
-               ],
-               [
-                  "Blog",
-                  4
-               ]
-            ],
-            "name" : "Luca Ferrari"
-         },
-         {
-            "name" : "Mark Anderson",
-            "id" : "Mark Anderson",
-            "data" : [
-               [
-                  "Raku",
-                  2
-               ]
-            ]
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Raku",
-                  2
-               ]
-            ],
-            "id" : "Mohammad S Anwar",
-            "name" : "Mohammad S Anwar"
-         },
-         {
-            "name" : "Niels van Dijke",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ],
-            "id" : "Niels van Dijke"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ],
-            "id" : "Paul Fajman",
-            "name" : "Paul Fajman"
-         },
-         {
-            "name" : "Paulo Custodio",
-            "id" : "Paulo Custodio",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ]
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ],
-            "id" : "Pete Houston",
-            "name" : "Pete Houston"
-         },
-         {
-            "name" : "Peter Campbell Smith",
-            "id" : "Peter Campbell Smith",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ]
-         },
-         {
-            "id" : "Robert DiCicco",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ],
-            "name" : "Robert DiCicco"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Raku",
-                  2
-               ]
-            ],
-            "id" : "Roger Bell_West",
-            "name" : "Roger Bell_West"
-         },
-         {
-            "name" : "Simon Green",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Simon Green"
-         },
-         {
-            "id" : "Simon Proctor",
-            "data" : [
-               [
-                  "Raku",
-                  2
-               ]
-            ],
-            "name" : "Simon Proctor"
-         },
-         {
-            "name" : "Ulrich Rieke",
-            "id" : "Ulrich Rieke",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Raku",
-                  2
-               ]
-            ]
-         },
-         {
-            "name" : "W. Luis Mochan",
-            "id" : "W. Luis Mochan",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ]
+            "name" : "Andrew Shitov"
          }
       ]
    },
-   "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/>"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
-   },
-   "chart" : {
-      "type" : "column"
-   },
-   "subtitle" : {
-      "text" : "[Champions: 33] Last updated at 2021-12-06 03:05:43 GMT"
-   },
    "plotOptions" : {
       "series" : {
+         "borderWidth" : 0,
          "dataLabels" : {
             "format" : "{point.y}",
             "enabled" : 1
-         },
-         "borderWidth" : 0
+         }
       }
    },
+   "chart" : {
+      "type" : "column"
+   },
    "series" : [
       {
-         "colorByPoint" : 1,
-         "name" : "The Weekly Challenge - 141",
+         "name" : "The Weekly Challenge - 142",
          "data" : [
             {
-               "y" : 4,
-               "name" : "Abigail",
-               "drilldown" : "Abigail"
-            },
-            {
-               "name" : "Adam Russell",
-               "y" : 3,
-               "drilldown" : "Adam Russell"
-            },
-            {
-               "drilldown" : "Alexander Karelas",
                "y" : 1,
-               "name" : "Alexander Karelas"
-            },
-            {
-               "name" : "Alexander Pankoff",
-               "y" : 2,
-               "drilldown" : "Alexander Pankoff"
-            },
-            {
-               "drilldown" : "Arne Sommer",
-               "name" : "Arne Sommer",
-               "y" : 3
-            },
-            {
-               "y" : 4,
-               "name" : "Athanasius",
-               "drilldown" : "Athanasius"
-            },
-            {
-               "drilldown" : "Colin Crain",
-               "y" : 2,
-               "name" : "Colin Crain"
-            },
-            {
-               "name" : "Dave Jacoby",
-               "y" : 3,
-               "drilldown" : "Dave Jacoby"