- Added solutions by Luca Ferrari.

33 files changed, 3116 insertions, 3087 deletions

diff --git a/challenge-277/luca-ferrari/blog-1.txt b/challenge-277/luca-ferrari/blog-1.txt
new file mode 100644
index 0000000000..57028ccd50
--- /dev/null
+++ b/challenge-277/luca-ferrari/blog-1.txt
@@ -0,0 +1 @@
+https://fluca1978.github.io/2024/07/11/PerlWeeklyChallenge277.html#task1
diff --git a/challenge-277/luca-ferrari/blog-10.txt b/challenge-277/luca-ferrari/blog-10.txt
new file mode 100644
index 0000000000..ff098f3247
--- /dev/null
+++ b/challenge-277/luca-ferrari/blog-10.txt
@@ -0,0 +1 @@
+https://fluca1978.github.io/2024/07/11/PerlWeeklyChallenge277.html#task10
diff --git a/challenge-277/luca-ferrari/blog-2.txt b/challenge-277/luca-ferrari/blog-2.txt
new file mode 100644
index 0000000000..6e547b6ff3
--- /dev/null
+++ b/challenge-277/luca-ferrari/blog-2.txt
@@ -0,0 +1 @@
+https://fluca1978.github.io/2024/07/11/PerlWeeklyChallenge277.html#task2
diff --git a/challenge-277/luca-ferrari/blog-3.txt b/challenge-277/luca-ferrari/blog-3.txt
new file mode 100644
index 0000000000..a1d7377ef7
--- /dev/null
+++ b/challenge-277/luca-ferrari/blog-3.txt
@@ -0,0 +1 @@
+https://fluca1978.github.io/2024/07/11/PerlWeeklyChallenge277.html#task3
diff --git a/challenge-277/luca-ferrari/blog-4.txt b/challenge-277/luca-ferrari/blog-4.txt
new file mode 100644
index 0000000000..4181dbfbd5
--- /dev/null
+++ b/challenge-277/luca-ferrari/blog-4.txt
@@ -0,0 +1 @@
+https://fluca1978.github.io/2024/07/11/PerlWeeklyChallenge277.html#task4
diff --git a/challenge-277/luca-ferrari/blog-5.txt b/challenge-277/luca-ferrari/blog-5.txt
new file mode 100644
index 0000000000..9c42edd258
--- /dev/null
+++ b/challenge-277/luca-ferrari/blog-5.txt
@@ -0,0 +1 @@
+https://fluca1978.github.io/2024/07/11/PerlWeeklyChallenge277.html#task5
diff --git a/challenge-277/luca-ferrari/blog-6.txt b/challenge-277/luca-ferrari/blog-6.txt
new file mode 100644
index 0000000000..61432ba610
--- /dev/null
+++ b/challenge-277/luca-ferrari/blog-6.txt
@@ -0,0 +1 @@
+https://fluca1978.github.io/2024/07/11/PerlWeeklyChallenge277.html#task6
diff --git a/challenge-277/luca-ferrari/blog-7.txt b/challenge-277/luca-ferrari/blog-7.txt
new file mode 100644
index 0000000000..5c9715ee37
--- /dev/null
+++ b/challenge-277/luca-ferrari/blog-7.txt
@@ -0,0 +1 @@
+https://fluca1978.github.io/2024/07/11/PerlWeeklyChallenge277.html#task7
diff --git a/challenge-277/luca-ferrari/blog-8.txt b/challenge-277/luca-ferrari/blog-8.txt
new file mode 100644
index 0000000000..5ab6616e47
--- /dev/null
+++ b/challenge-277/luca-ferrari/blog-8.txt
@@ -0,0 +1 @@
+https://fluca1978.github.io/2024/07/11/PerlWeeklyChallenge277.html#task8
diff --git a/challenge-277/luca-ferrari/blog-9.txt b/challenge-277/luca-ferrari/blog-9.txt
new file mode 100644
index 0000000000..1e197a9443
--- /dev/null
+++ b/challenge-277/luca-ferrari/blog-9.txt
@@ -0,0 +1 @@
+https://fluca1978.github.io/2024/07/11/PerlWeeklyChallenge277.html#task9
diff --git a/stats/pwc-challenge-277.json b/stats/pwc-challenge-277.json
index 3cbc3b7bfc..b1e765f342 100644
--- a/stats/pwc-challenge-277.json
+++ b/stats/pwc-challenge-277.json
@@ -1,75 +1,59 @@
 {
-   "plotOptions" : {
-      "series" : {
-         "borderWidth" : 0,
-         "dataLabels" : {
-            "format" : "{point.y}",
-            "enabled" : 1
-         }
-      }
-   },
-   "chart" : {
-      "type" : "column"
-   },
-   "xAxis" : {
-      "type" : "category"
-   },
-   "subtitle" : {
-      "text" : "[Champions: 37] Last updated at 2024-07-21 22:37:07 GMT"
-   },
-   "title" : {
-      "text" : "The Weekly Challenge - 277"
-   },
    "legend" : {
       "enabled" : 0
    },
+   "subtitle" : {
+      "text" : "[Champions: 38] Last updated at 2024-07-29 10:55:46 GMT"
+   },
    "tooltip" : {
       "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
+      "followPointer" : 1,
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>"
    },
    "series" : [
       {
+         "name" : "The Weekly Challenge - 277",
+         "colorByPoint" : 1,
          "data" : [
             {
-               "name" : "Alexander Karelas",
                "drilldown" : "Alexander Karelas",
-               "y" : 2
+               "y" : 2,
+               "name" : "Alexander Karelas"
             },
             {
-               "y" : 5,
+               "name" : "Ali Moradi",
                "drilldown" : "Ali Moradi",
-               "name" : "Ali Moradi"
+               "y" : 5
             },
             {
-               "y" : 3,
                "name" : "Andrew Schneider",
-               "drilldown" : "Andrew Schneider"
+               "drilldown" : "Andrew Schneider",
+               "y" : 3
             },
             {
+               "drilldown" : "Arne Sommer",
                "y" : 3,
-               "name" : "Arne Sommer",
-               "drilldown" : "Arne Sommer"
+               "name" : "Arne Sommer"
             },
             {
                "drilldown" : "Athanasius",
-               "name" : "Athanasius",
-               "y" : 4
+               "y" : 4,
+               "name" : "Athanasius"
             },
             {
-               "y" : 2,
                "drilldown" : "BarrOff",
+               "y" : 2,
                "name" : "BarrOff"
             },
             {
-               "y" : 2,
                "drilldown" : "Bob Lied",
+               "y" : 2,
                "name" : "Bob Lied"
             },
             {
-               "name" : "Bruce Gray",
+               "y" : 5,
                "drilldown" : "Bruce Gray",
-               "y" : 5
+               "name" : "Bruce Gray"
             },
             {
                "name" : "Cheok-Yin Fung",
@@ -77,9 +61,9 @@
                "y" : 2
             },
             {
-               "y" : 2,
                "name" : "Dave Jacoby",
-               "drilldown" : "Dave Jacoby"
+               "drilldown" : "Dave Jacoby",
+               "y" : 2
             },
             {
                "name" : "David Ferrone",
@@ -87,34 +71,34 @@
                "y" : 2
             },
             {
+               "name" : "E. Choroba",
                "y" : 2,
-               "drilldown" : "E. Choroba",
-               "name" : "E. Choroba"
+               "drilldown" : "E. Choroba"
             },
             {
-               "y" : 2,
+               "name" : "Feng Chang",
                "drilldown" : "Feng Chang",
-               "name" : "Feng Chang"
+               "y" : 2
             },
             {
+               "name" : "Jaldhar H. Vyas",
                "y" : 5,
-               "drilldown" : "Jaldhar H. Vyas",
-               "name" : "Jaldhar H. Vyas"
+               "drilldown" : "Jaldhar H. Vyas"
             },
             {
-               "name" : "Jan Krnavek",
+               "y" : 2,
                "drilldown" : "Jan Krnavek",
-               "y" : 2
+               "name" : "Jan Krnavek"
             },
             {
-               "y" : 3,
                "name" : "Jorg Sommrey",
-               "drilldown" : "Jorg Sommrey"
+               "drilldown" : "Jorg Sommrey",
+               "y" : 3
             },
             {
-               "y" : 2,
+               "name" : "Kjetil Skotheim",
                "drilldown" : "Kjetil Skotheim",
-               "name" : "Kjetil Skotheim"
+               "y" : 2
             },
             {
                "name" : "Laurent Rosenfeld",
@@ -122,19 +106,24 @@
                "y" : 6
             },
             {
-               "y" : 2,
+               "name" : "Luca Ferrari",
+               "y" : 11,
+               "drilldown" : "Luca Ferrari"
+            },
+            {
                "name" : "Mariano Ortega",
+               "y" : 2,
                "drilldown" : "Mariano Ortega"
             },
             {
-               "name" : "Mark Anderson",
                "drilldown" : "Mark Anderson",
-               "y" : 2
+               "y" : 2,
+               "name" : "Mark Anderson"
             },
             {
-               "y" : 2,
                "name" : "Matthew Neleigh",
-               "drilldown" : "Matthew Neleigh"
+               "drilldown" : "Matthew Neleigh",
+               "y" : 2
             },
             {
                "name" : "Matthias Muth",
@@ -142,14 +131,14 @@
                "y" : 3
             },
             {
-               "drilldown" : "Nelo Tovar",
                "name" : "Nelo Tovar",
-               "y" : 2
+               "y" : 2,
+               "drilldown" : "Nelo Tovar"
             },
             {
+               "name" : "Niels van Dijke",
                "y" : 2,
-               "drilldown" : "Niels van Dijke",
-               "name" : "Niels van Dijke"
+               "drilldown" : "Niels van Dijke"
             },
             {
                "name" : "Packy Anderson",
@@ -157,19 +146,19 @@
                "y" : 5
             },
             {
-               "y" : 3,
                "name" : "Peter Campbell Smith",
+               "y" : 3,
                "drilldown" : "Peter Campbell Smith"
             },
             {
-               "y" : 2,
+               "name" : "Peter Meszaros",
                "drilldown" : "Peter Meszaros",
-               "name" : "Peter Meszaros"
+               "y" : 2
             },
             {
+               "y" : 3,
                "drilldown" : "Reinier Maliepaard",
-               "name" : "Reinier Maliepaard",
-               "y" : 3
+               "name" : "Reinier Maliepaard"
             },
             {
                "y" : 3,
@@ -177,19 +166,19 @@
                "name" : "Robbie Hatley"
             },
             {
+               "drilldown" : "Robert Ransbottom",
                "y" : 2,
-               "name" : "Robert Ransbottom",
-               "drilldown" : "Robert Ransbottom"
+               "name" : "Robert Ransbottom"
             },
             {
-               "name" : "Roger Bell_West",
+               "y" : 5,
                "drilldown" : "Roger Bell_West",
-               "y" : 5
+               "name" : "Roger Bell_West"
             },
             {
-               "name" : "Santiago Leyva",
+               "y" : 2,
                "drilldown" : "Santiago Leyva",
-               "y" : 2
+               "name" : "Santiago Leyva"
             },
             {
                "y" : 3,
@@ -197,28 +186,26 @@
                "name" : "Simon Green"
             },
             {
-               "name" : "Thomas Kohler",
                "drilldown" : "Thomas Kohler",
-               "y" : 4
+               "y" : 4,
+               "name" : "Thomas Kohler"
             },
             {
+               "y" : 4,
                "drilldown" : "Ulrich Rieke",
-               "name" : "Ulrich Rieke",
-               "y" : 4
+               "name" : "Ulrich Rieke"
             },
             {
+               "name" : "W. Luis Mochan",
                "y" : 3,
-               "drilldown" : "W. Luis Mochan",
-               "name" : "W. Luis Mochan"
+               "drilldown" : "W. Luis Mochan"
             },
             {
+               "drilldown" : "Wanderdoc",
                "y" : 2,
-               "name" : "Wanderdoc",
-               "drilldown" : "Wanderdoc"
+               "name" : "Wanderdoc"
             }
-         ],
-         "colorByPoint" : 1,
-         "name" : "The Weekly Challenge - 277"
+         ]
       }
    ],
    "yAxis" : {
@@ -239,6 +226,7 @@
             "id" : "Alexander Karelas"
          },
          {
+            "name" : "Ali Moradi",
             "data" : [
                [
                   "Perl",
@@ -253,11 +241,9 @@
                   1
                ]
             ],
-            "id" : "Ali Moradi",
-            "name" : "Ali Moradi"
+            "id" : "Ali Moradi"
          },
          {
-            "id" : "Andrew Schneider",
             "data" : [
                [
                   "Perl",
@@ -268,11 +254,10 @@
                   1
                ]
             ],
+            "id" : "Andrew Schneider",
             "name" : "Andrew Schneider"
          },
          {
-            "name" : "Arne Sommer",
-            "id" : "Arne Sommer",
             "data" : [
                [
                   "Raku",
@@ -282,11 +267,11 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Arne Sommer",
+            "name" : "Arne Sommer"
          },
          {
-            "name" : "Athanasius",
-            "id" : "Athanasius",
             "data" : [
                [
                   "Perl",
@@ -296,7 +281,9 @@
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "id" : "Athanasius",
+            "name" : "Athanasius"
          },
          {
             "name" : "BarrOff",
@@ -309,17 +296,18 @@
             "id" : "BarrOff"
          },
          {
-            "name" : "Bob Lied",
-            "id" : "Bob Lied",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Bob Lied",
+            "name" : "Bob Lied"
          },
          {
             "name" : "Bruce Gray",
+            "id" : "Bruce Gray",
             "data" : [
                [
                   "Perl",
@@ -333,38 +321,37 @@
                   "Blog",
                   1
                ]
-            ],
-            "id" : "Bruce Gray"
+            ]
          },
          {
+            "name" : "Cheok-Yin Fung",
+            "id" : "Cheok-Yin Fung",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "id" : "Cheok-Yin Fung",
-            "name" : "Cheok-Yin Fung"
+            ]
          },
          {
+            "name" : "Dave Jacoby",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Dave Jacoby",
-            "name" : "Dave Jacoby"
+            "id" : "Dave Jacoby"
          },
          {
+            "name" : "David Ferrone",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "David Ferrone",
-            "name" : "David Ferrone"
+            "id" : "David Ferrone"
          },
          {
             "name" : "E. Choroba",
@@ -377,13 +364,13 @@
             "id" : "E. Choroba"
          },
          {
-            "id" : "Feng Chang",
             "data" : [
                [
                   "Raku",
                   2
                ]
             ],
+            "id" : "Feng Chang",
             "name" : "Feng Chang"
          },
          {
@@ -405,17 +392,16 @@
             "name" : "Jaldhar H. Vyas"
          },
          {
-            "id" : "Jan Krnavek",
             "data" : [
                [
                   "Raku",
                   2
                ]
             ],
+            "id" : "Jan Krnavek",
             "name" : "Jan Krnavek"
          },
          {
-            "id" : "Jorg Sommrey",
             "data" : [
                [
                   "Perl",
@@ -426,20 +412,20 @@
                   1
                ]
             ],
+            "id" : "Jorg Sommrey",
             "name" : "Jorg Sommrey"
          },
          {
             "name" : "Kjetil Skotheim",
-            "id" : "Kjetil Skotheim",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Kjetil Skotheim"
          },
          {
-            "id" : "Laurent Rosenfeld",
             "data" : [
                [
                   "Perl",
@@ -454,16 +440,31 @@
                   2
                ]
             ],
+            "id" : "Laurent Rosenfeld",
             "name" : "Laurent Rosenfeld"
          },
          {
-            "id" : "Mariano Ortega",
+            "id" : "Luca Ferrari",
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  9
+               ]
+            ],
+            "name" : "Luca Ferrari"
+         },
+         {
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
+            "id" : "Mariano Ortega",
             "name" : "Mariano Ortega"
          },
          {
@@ -501,14 +502,14 @@
             "name" : "Matthias Muth"
          },
          {
-            "name" : "Nelo Tovar",
+            "id" : "Nelo Tovar",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Nelo Tovar"
+            "name" : "Nelo Tovar"
          },
          {
             "id" : "Niels van Dijke",
@@ -539,6 +540,7 @@
             "name" : "Packy Anderson"
          },
          {
+            "name" : "Peter Campbell Smith",
             "id" : "Peter Campbell Smith",
             "data" : [
                [
@@ -549,21 +551,19 @@
                   "Blog",
                   1
                ]
-            ],
-            "name" : "Peter Campbell Smith"
+            ]
          },
          {
-            "id" : "Peter Meszaros",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
+            "id" : "Peter Meszaros",
             "name" : "Peter Meszaros"
          },
          {
-            "name" : "Reinier Maliepaard",
             "id" : "Reinier Maliepaard",
             "data" : [
                [
@@ -574,9 +574,12 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "name" : "Reinier Maliepaard"
          },
          {
+            "name" : "Robbie Hatley",
+            "id" : "Robbie Hatley",
             "data" : [
                [
                   "Perl",
@@ -586,9 +589,7 @@
                   "Blog",
                   1
                ]
-            ],
-            "id" : "Robbie Hatley",
-            "name" : "Robbie Hatley"
+            ]
          },
          {
             "id" : "Robert Ransbottom",
@@ -601,7 +602,6 @@
             "name" : "Robert Ransbottom"
          },
          {
-            "name" : "Roger Bell_West",
             "id" : "Roger Bell_West",
             "data" : [
                [
@@ -616,19 +616,21 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "name" : "Roger Bell_West"
          },
          {
+            "name" : "Santiago Leyva",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Santiago Leyva",
-            "name" : "Santiago Leyva"
+            "id" : "Santiago Leyva"
          },
          {
+            "id" : "Simon Green",
             "data" : [
                [
                   "Perl",
@@ -639,7 +641,6 @@
                   1
                ]
             ],
-            "id" : "Simon Green",
             "name" : "Simon Green"
          },
          {
@@ -671,7 +672,7 @@
             ]
          },
          {
-            "name" : "W. Luis Mochan",
+            "id" : "W. Luis Mochan",
             "data" : [
                [
                   "Perl",
@@ -682,18 +683,36 @@
                   1
                ]
             ],
-            "id" : "W. Luis Mochan"
+            "name" : "W. Luis Mochan"
          },
          {
+            "name" : "Wanderdoc",
             "id" : "Wanderdoc",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "name" : "Wanderdoc"
+            ]
          }
       ]
+   },
+   "title" : {
+      "text" : "The Weekly Challenge - 277"
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "xAxis" : {
+      "type" : "category"
+   },
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "format" : "{point.y}",
+            "enabled" : 1
+         },
+         "borderWidth" : 0
+      }
    }
 }
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index 5143e75eb0..8f3c57309f 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,72 +1,61 @@
 {
-   "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/>"
-   },
-   "subtitle" : {
-      "text" : "[Champions: 4] Last updated at 2024-07-29 10:45:05 GMT"
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
    },
    "series" : [
       {
          "name" : "The Weekly Challenge - 280",
          "data" : [
             {
-               "y" : 2,
                "drilldown" : "E. Choroba",
-               "name" : "E. Choroba"
+               "name" : "E. Choroba",
+               "y" : 2
             },
             {
-               "drilldown" : "Feng Chang",
+               "name" : "Feng Chang",
                "y" : 2,
-               "name" : "Feng Chang"
+               "drilldown" : "Feng Chang"
             },
             {
-               "y" : 2,
                "drilldown" : "Mark Anderson",
-               "name" : "Mark Anderson"
+               "name" : "Mark Anderson",
+               "y" : 2
             },
             {
+               "y" : 4,
                "name" : "Thomas Kohler",
-               "drilldown" : "Thomas Kohler",
-               "y" : 4
+               "drilldown" : "Thomas Kohler"
             }
          ],
          "colorByPoint" : 1
       }
    ],
-   "legend" : {
-      "enabled" : 0
-   },
-   "chart" : {
-      "type" : "column"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
+   "xAxis" : {
+      "type" : "category"
    },
    "drilldown" : {
       "series" : [
          {
             "id" : "E. Choroba",
+            "name" : "E. Choroba",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "name" : "E. Choroba"
+            ]
          },
          {
-            "id" : "Feng Chang",
-            "name" : "Feng Chang",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "id" : "Feng Chang",
+            "name" : "Feng Chang"
          },
          {
             "data" : [
@@ -94,19 +83,30 @@
          }
       ]
    },
+   "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/>"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge - 280"
+   },
+   "legend" : {
+      "enabled" : 0
+   },
    "plotOptions" : {
       "series" : {
+         "borderWidth" : 0,
          "dataLabels" : {
-            "format" : "{point.y}",
-            "enabled" : 1
-         },
-         "borderWidth" : 0
+            "enabled" : 1,
+            "format" : "{point.y}"
+