- Added solution by Ulrich Rieke.

13 files changed, 1535 insertions, 1461 deletions

diff --git a/challenge-076/ulrich-rieke/perl/ch-1.pl b/challenge-076/ulrich-rieke/perl/ch-1.pl
new file mode 100644
index 0000000000..9c73e79e3d
--- /dev/null
+++ b/challenge-076/ulrich-rieke/perl/ch-1.pl
@@ -0,0 +1,59 @@
+#!/usr/bin/perl ;
+use strict ;
+use warnings ;
+use feature 'say' ;
+use Algorithm::Combinatorics qw ( combinations ) ;
+
+sub findSum {
+  my $array = shift ;
+  my $sum = 0 ;
+  map { $sum += $_ } @$array ;
+  return $sum ;
+}
+
+sub isPrime {
+  my $number = shift ;
+  if ( $number == 1 ) {
+      return 0 ;
+  }
+  if ( $number == 2 ) {
+      return 1 ;
+  }
+  for ( my $i = 2 ; $i < int ( $number / 2 + 1 ) ; $i++ ) {
+      if ( $number % $i == 0 ) {
+    return 0 ;
+    last ;
+      }
+  }
+  return 1 ;
+}
+
+my $N = $ARGV[0] ;
+my $line ;
+if ( isPrime ( $N ) ) {
+  $line = "1 , $N is a prime number!" ;
+}
+else {
+  my @primes = grep { isPrime( $_ ) } (2..$N) ;
+  my $len = scalar @primes ;
+  my $elements = 2 ;
+OUTER : while ( $elements < $len + 1 ) {
+      my $iter = combinations( \@primes, $elements ) ;
+INNER :    while ( my $p = $iter->next ) {
+        if ( findSum( $p ) == $N ) {
+        $line = "$elements : " ;
+        $line .= join( " + " , @$p ) ;
+        $line .= " = $N" ;
+        last INNER ;
+        last OUTER ;
+              }
+      }
+      $elements++ ;
+    }
+}
+if ( $line ) {
+  say $line ;
+}
+else {
+  say "$N cannot be written as the sum of prime numbers with positive sign !" ;
+}
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index 93bfc783bd..4261613d39 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,4 +1,15 @@
 {
+   "title" : {
+      "text" : "Perl Weekly Challenge - 076"
+   },
+   "subtitle" : {
+      "text" : "[Champions: 5] Last updated at 2020-09-01 09:22:58 GMT"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
    "plotOptions" : {
       "series" : {
          "borderWidth" : 0,
@@ -8,63 +19,25 @@
          }
       }
    },
-   "title" : {
-      "text" : "Perl Weekly Challenge - 076"
-   },
-   "subtitle" : {
-      "text" : "[Champions: 4] Last updated at 2020-09-01 09:10:40 GMT"
-   },
-   "chart" : {
-      "type" : "column"
+   "legend" : {
+      "enabled" : 0
    },
    "xAxis" : {
       "type" : "category"
    },
-   "legend" : {
-      "enabled" : 0
+   "chart" : {
+      "type" : "column"
    },
    "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/>"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
+      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
+      "followPointer" : 1
    },
-   "series" : [
-      {
-         "name" : "Perl Weekly Challenge - 076",
-         "data" : [
-            {
-               "drilldown" : "Andinus",
-               "name" : "Andinus",
-               "y" : 2
-            },
-            {
-               "drilldown" : "Luca Ferrari",
-               "y" : 4,
-               "name" : "Luca Ferrari"
-            },
-            {
-               "y" : 2,
-               "name" : "Mark Anderson",
-               "drilldown" : "Mark Anderson"
-            },
-            {
-               "drilldown" : "Simon Proctor",
-               "y" : 1,
-               "name" : "Simon Proctor"
-            }
-         ],
-         "colorByPoint" : 1
-      }
-   ],
    "drilldown" : {
       "series" : [
          {
             "id" : "Andinus",
+            "name" : "Andinus",
             "data" : [
                [
                   "Perl",
@@ -74,11 +47,9 @@
                   "Blog",
                   1
                ]
-            ],
-            "name" : "Andinus"
+            ]
          },
          {
-            "id" : "Luca Ferrari",
             "data" : [
                [
                   "Raku",
@@ -89,17 +60,18 @@
                   2
                ]
             ],
-            "name" : "Luca Ferrari"
+            "name" : "Luca Ferrari",
+            "id" : "Luca Ferrari"
          },
          {
+            "name" : "Mark Anderson",
+            "id" : "Mark Anderson",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ],
-            "id" : "Mark Anderson",
-            "name" : "Mark Anderson"
+            ]
          },
          {
             "data" : [
@@ -110,7 +82,50 @@
             ],
             "id" : "Simon Proctor",
             "name" : "Simon Proctor"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  1
+               ]
+            ],
+            "id" : "Ulrich Rieke",
+            "name" : "Ulrich Rieke"
          }
       ]
-   }
+   },
+   "series" : [
+      {
+         "name" : "Perl Weekly Challenge - 076",
+         "colorByPoint" : 1,
+         "data" : [
+            {
+               "name" : "Andinus",
+               "y" : 2,
+               "drilldown" : "Andinus"
+            },
+            {
+               "name" : "Luca Ferrari",
+               "y" : 4,
+               "drilldown" : "Luca Ferrari"
+            },
+            {
+               "name" : "Mark Anderson",
+               "drilldown" : "Mark Anderson",
+               "y" : 2
+            },
+            {
+               "name" : "Simon Proctor",
+               "drilldown" : "Simon Proctor",
+               "y" : 1
+            },
+            {
+               "name" : "Ulrich Rieke",
+               "drilldown" : "Ulrich Rieke",
+               "y" : 1
+            }
+         ]
+      }
+   ]
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index 543dece63c..75b704e0db 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,49 +1,6 @@
 {
-   "title" : {
-      "text" : "Perl Weekly Challenge Contributions [2019 - 2020]"
-   },
-   "subtitle" : {
-      "text" : "Last updated at 2020-09-01 09:10:40 GMT"
-   },
-   "chart" : {
-      "type" : "column"
-   },
-   "xAxis" : {
-      "type" : "category",
-      "labels" : {
-         "style" : {
-            "fontFamily" : "Verdana, sans-serif",
-            "fontSize" : "13px"
-         }
-      }
-   },
-   "yAxis" : {
-      "min" : 0,
-      "title" : {
-         "text" : null
-      }
-   },
-   "tooltip" : {
-      "pointFormat" : "<b>{point.y:.0f}</b>"
-   },
-   "legend" : {
-      "enabled" : "false"
-   },
    "series" : [
       {
-         "name" : "Contributions",
-         "dataLabels" : {
-            "style" : {
-               "fontFamily" : "Verdana, sans-serif",
-               "fontSize" : "13px"
-            },
-            "rotation" : -90,
-            "align" : "right",
-            "y" : 10,
-            "format" : "{point.y:.0f}",
-            "color" : "#FFFFFF",
-            "enabled" : "true"
-         },
          "data" : [
             [
                "Blog",
@@ -51,13 +8,56 @@
             ],
             [
                "Perl",
-               3154
+               3155
             ],
             [
                "Raku",
                2056
             ]
-         ]
+         ],
+         "dataLabels" : {
+            "enabled" : "true",
+            "color" : "#FFFFFF",
+            "rotation" : -90,
+            "format" : "{point.y:.0f}",
+            "style" : {
+               "fontSize" : "13px",
+               "fontFamily" : "Verdana, sans-serif"
+            },
+            "y" : 10,
+            "align" : "right"
+         },
+         "name" : "Contributions"
+      }
+   ],
+   "xAxis" : {
+      "type" : "category",
+      "labels" : {
+         "style" : {
+            "fontFamily" : "Verdana, sans-serif",
+            "fontSize" : "13px"
+         }
+      }
+   },
+   "legend" : {
+      "enabled" : "false"
+   },
+   "tooltip" : {
+      "pointFormat" : "<b>{point.y:.0f}</b>"
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "subtitle" : {
+      "text" : "Last updated at 2020-09-01 09:22:58 GMT"
+   },
+   "title" : {
+      "text" : "Perl Weekly Challenge Contributions [2019 - 2020]"
+   },
+   "yAxis" : {
+      "min" : 0,
+      "title" : {
+         "text" : null
       }
-   ]
+   }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index fbe1870aa8..7c07ceceab 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,408 +1,28 @@
 {
-   "legend" : {
-      "enabled" : "false"
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "enabled" : 1,
+            "format" : "{point.y}"
+         },
+         "borderWidth" : 0
+      }
+   },
+   "subtitle" : {
+      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2020-09-01 09:22:58 GMT"
+   },
+   "title" : {
+      "text" : "Perl Weekly Challenge Language"
    },
    "yAxis" : {
       "title" : {
          "text" : "Total Solutions"
       }
    },
-   "tooltip" : {
-      "pointFormat" : "<span style=\"color:{point.color}\">Challenge {point.name}</span>: <b>{point.y:f}</b><br/>",
-      "followPointer" : "true",
-      "headerFormat" : "<span style=\"font-size:11px\"></span>"
-   },
-   "series" : [
-      {
-         "name" : "Perl Weekly Challenge Languages",
-         "data" : [
-            {
-               "y" : 142,
-               "name" : "#001",
-               "drilldown" : "001"
-            },
-            {
-               "y" : 109,
-               "name" : "#002",
-               "drilldown" : "002"
-            },
-            {
-               "y" : 71,
-               "name" : "#003",
-               "drilldown" : "003"
-            },
-            {
-               "drilldown" : "004",
-               "y" : 91,
-               "name" : "#004"
-            },
-            {
-               "name" : "#005",
-               "y" : 72,
-               "drilldown" : "005"
-            },
-            {
-               "drilldown" : "006",
-               "y" : 52,
-               "name" : "#006"
-            },
-            {
-               "drilldown" : "007",
-               "y" : 59,
-               "name" : "#007"
-            },
-            {
-               "drilldown" : "008",
-               "y" : 72,
-               "name" : "#008"
-            },
-            {
-               "drilldown" : "009",
-               "name" : "#009",
-               "y" : 68
-            },
-            {
-               "name" : "#010",
-               "y" : 60,
-               "drilldown" : "010"
-            },
-            {
-               "y" : 79,
-               "name" : "#011",
-               "drilldown" : "011"
-            },
-            {
-               "name" : "#012",
-               "y" : 83,
-               "drilldown" : "012"
-            },
-            {
-               "name" : "#013",
-               "y" : 76,
-               "drilldown" : "013"
-            },
-            {
-               "y" : 96,
-               "name" : "#014",
-               "drilldown" : "014"
-            },
-            {
-               "drilldown" : "015",
-               "y" : 93,
-               "name" : "#015"
-            },
-            {
-               "y" : 66,
-               "name" : "#016",
-               "drilldown" : "016"
-            },
-            {
-               "y" : 79,
-               "name" : "#017",
-               "drilldown" : "017"
-            },
-            {
-               "drilldown" : "018",
-               "y" : 76,
-               "name" : "#018"
-            },
-            {
-               "drilldown" : "019",
-               "y" : 97,
-               "name" : "#019"
-            },
-            {
-               "drilldown" : "020",
-               "y" : 95,
-               "name" : "#020"
-            },
-            {
-               "y" : 67,
-               "name" : "#021",
-               "drilldown" : "021"
-            },
-            {
-               "drilldown" : "022",
-               "y" : 63,
-               "name" : "#022"
-            },
-            {
-               "y" : 91,
-               "name" : "#023",
-               "drilldown" : "023"
-            },
-            {
-               "y" : 70,
-               "name" : "#024",
-               "drilldown" : "024"
-            },
-            {
-               "name" : "#025",
-               "y" : 55,
-               "drilldown" : "025"
-            },
-            {
-               "y" : 70,
-               "name" : "#026",
-               "drilldown" : "026"
-            },
-            {
-               "drilldown" : "027",
-               "name" : "#027",
-               "y" : 58
-            },
-            {
-               "y" : 78,
-               "name" : "#028",
-               "drilldown" : "028"
-            },
-            {
-               "drilldown" : "029",
-               "name" : "#029",
-               "y" : 77
-            },
-            {
-               "y" : 115,
-               "name" : "#030",
-               "drilldown" : "030"
-            },
-            {
-               "drilldown" : "031",
-               "name" : "#031",
-               "y" : 87
-            },
-            {
-               "y" : 92,
-               "name" : "#032",
-               "drilldown" : "032"
-            },
-            {
-               "drilldown" : "033",
-               "name" : "#033",
-               "y" : 108
-            },
-            {
-               "drilldown" : "034",
-               "y" : 62,
-               "name" : "#034"
-            },
-            {
-               "name" : "#035",
-               "y" : 62,
-               "drilldown" : "035"
-            },
-            {
-               "drilldown" : "036",
-               "y" : 66,
-               "name" : "#036"
-            },
-            {
-               "drilldown" : "037",
-               "y" : 65,
-               "name" : "#037"
-            },
-            {
-               "y" : 65,
-               "name" : "#038",
-               "drilldown" : "038"
-            },
-            {
-               "drilldown" : "039",
-               "y" : 60,
-               "name" : "#039"
-            },
-            {
-               "drilldown" : "040",
-               "y" : 71,
-               "name" : "#040"
-            },
-            {
-               "name" : "#041",
-               "y" : 74,
-               "drilldown" : "041"
-            },
-            {
-               "drilldown" : "042",
-               "y" : 88,
-               "name" : "#042"
-            },
-            {
-               "drilldown" : "043",
-               "y" : 66,
-               "name" : "#043"
-            },
-            {
-               "drilldown" : "044",
-               "y" : 82,
-               "name" : "#044"
-            },
-            {
-               "y" : 94,
-               "name" : "#045",
-               "drilldown" : "045"
-            },
-            {
-               "y" : 85,
-               "name" : "#046",
-               "drilldown" : "046"
-            },
-            {
-               "name" : "#047",
-               "y" : 82,
-               "drilldown" : "047"
-            },
-            {
-               "y" : 106,
-               "name" : "#048",
-               "drilldown" : "048"
-            },
-            {
-               "drilldown" : "049",
-               "name" : "#049",
-               "y" : 85
-            },
-            {
-               "drilldown" : "050",
-               "y" : 96,
-               "name" : "#050"
-            },
-            {
-               "y" : 87,
-               "name" : "#051",
-               "drilldown" : "051"
-            },
-            {
-               "drilldown" : "052",
-               "name" : "#052",
-               "y" : 89
-            },
-            {
-               "y" : 99,
-               "name" : "#053",
-               "drilldown" : "053"
-            },
-            {
-               "y" : 101,
-               "name" : "#054",
-               "drilldown" : "054"
-            },
-            {
-               "drilldown" : "055",
-               "y" : 86,
-               "name" : "#055"
-            },
-            {
-               "y" : 93,
-               "name" : "#056",
-               "drilldown" : "056"
-            },
-            {
-               "name" : "#057",
-               "y" : 78,
-               "drilldown" : "057"
-            },
-            {
-               "y" : 67,
-               "name" : "#058",
-               "drilldown" : "058"
-            },
-            {
-               "drilldown" : "059",
-               "y" : 87,
-               "name" : "#059"
-            },
-            {
-               "name" : "#060",
-               "y" : 83,
-               "drilldown" : "060"
-            },
-            {
-               "name" : "#061",
-               "y" : 79,
-               "drilldown" : "061"
-            },
-            {
-               "drilldown" : "062",
-               "name" : "#062",
-               "y" : 54
-            },
-            {
-               "drilldown" : "063",
-               "y" : 87,
-               "name" : "#063"
-            },
-            {
-               "y" : 76,
-               "name" : "#064",
-               "drilldown" : "064"
-            },
-            {
-               "drilldown" : "065",
-               "name" : "#065",
-               "y" : 71
-            },
-            {
-               "drilldown" : "066",
-               "y" : 82,
-               "name" : "#066"
-            },
-            {
-               "name" : "#067",
-               "y" : 88,
-               "drilldown" : "067"
-            },
-            {
-               "y" : 73,
-               "name" : "#068",
-               "drilldown" : "068"
-            },
-            {
-               "drilldown" : "069",
-               "y" : 81,
-               "name" : "#069"
-            },
-            {
-               "y" : 91,
-               "name" : "#070",
-               "drilldown" : "070"
-            },
-            {
-               "y" : 76,
-               "name" : "#071",
-               "drilldown" : "071"
-            },
-            {
-               "name" : "#072",
-               "y" : 109,
-               "drilldown" : "072"
-            },
-            {
-               "drilldown" : "073",
-               "name" : "#073",
-               "y" : 108
-            },
-            {
-               "y" : 112,
-               "name" : "#074",
-               "drilldown" : "074"
-            },
-            {
-               "name" : "#075",
-               "y" : 107,
-               "drilldown" : "075"
-            },
-            {
-               "drilldown" : "076",
-               "y" : 9,
-               "name" : "#076"
-            }
-         ],
-         "colorByPoint" : "true"
-      }
-   ],
    "drilldown" : {
       "series" : [
          {
+            "id" : "001",
             "name" : "001",
             "data" : [
                [
@@ -417,11 +37,9 @@
                   "Blog",
                   11
                ]
-            ],
-            "id" : "001"
+            ]
          },
          {
-            "name" : "002",
             "data" : [
                [
                   "Perl",
@@ -436,10 +54,12 @@
                   10
                ]
             ],
+            "name" : "002",
             "id" : "002"
          },
          {
             "id" : "003",
+            "name" : "003",
             "data" : [
                [
                   "Perl",
@@ -453,8 +73,7 @@
                   "Blog",
                   9
                ]
-            ],
-            "name" : "003"
+            ]
          },
          {
             "name" : "004",
@@ -475,6 +94,7 @@
             ]
          },
          {
+            "name" : "005",
             "id" : "005",
             "data" : [
                [
@@ -489,10 +109,10 @@
                   "Blog",
                   12
                ]
-            ],
-            "name" : "005"
+            ]
          },
          {
+            "name" : "006",
             "id" : "006",
             "data" : [
                [
@@ -507,12 +127,9 @@
                   "Blog",
                   7
                ]
-            ],
-            "name" : "006"
+            ]
          },
          {
-            "name" : "007",
-            "id" : "007",
             "data" : [
                [
                   "Perl",
@@ -526,7 +143,9 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "007",
+            "id" : "007"
          },
          {
             "data" : [
@@ -547,7 +166,6 @@
             "name" : "008"
          },
          {
-            "id" : "009",
             "data" : [
                [
                   "Perl",
@@ -562,10 +180,10 @@
                   13
                ]
             ],
+            "id" : "009",
             "name" : "009"
          },
          {
-            "id" : "010",
             "data" : [
                [
                   "Perl",
@@ -580,10 +198,10 @@
                   11
                ]
             ],
+            "id" : "010",
             "name" : "010"
          },
          {
-            "name" : "011",
             "data" : [
                [
                   "Perl",
@@ -598,10 +216,10 @@
                   10
                ]
             ],
+            "name" : "011",
             "id" : "011"
          },
          {
-            "name" : "012",
             "data" : [
                [
                   "Perl",
@@ -616,7 +234,8 @@
                   11
                ]
             ],
-            "id" : "012"
+            "id" : "012",
+            "name" : "012"
          },
          {
             "data" : [
@@ -637,8 +256,6 @@
             "name" : "013"
          },
          {
-            "name" : "014",
-            "id" : "014",
             "data" : [
                [
                   "Perl",
@@ -652,10 +269,13 @@
                   "Blog",
                   15
                ]
-            ]
+            ],
+            "name" : "014",
+            "id" : "014"
          },
          {
             "id" : "015",
+            "name" : "015",
             "data" : [
                [
                   "Perl",
@@ -669,11 +289,9 @@
                   "Blog",
                   15
                ]
-            ],
-            "name" : "015"
+            ]
          },
          {
-            "id" : "016",
             "data" : [
                [
                   "Perl",
@@ -688,6 +306,7 @@
                   12
                ]
             ],
+            "id" : "016",
             "name" : "016"
          },
          {
@@ -709,6 +328,7 @@
             "name" : "017"
          },
          {
+            "id" : "018",
             "name" : "018",
             "data" : [
                [
@@ -723,11 +343,9 @@
                   "Blog",
                   14
                ]
-            ],
-            "id" : "018"
+            ]
          },
          {
-            "id" : "019",
             "data" : [
                [
                   "Perl",
@@ -742,9 +360,11 @@
                   13
                ]
             ],
-            "name" : "019"
+            "name" : "019",
+            "id" : "019"
          },
          {
+            "id" : "020",
             "name" : "020",
             "data" : [
                [
@@ -759,8 +379,7 @@
                   "Blog",
                   13
                ]
-            ],
-            "id" : "020"
+            ]
          },
          {
             "data" : [
@@ -777,12 +396,10 @@
                   10
                ]
             ],
-            "id" : "021",
-            "name" : "021"
+            "name" : "021",
+            "id" : "021"
          },
          {
-            "name" : "022",
-            "id" : "022",
             "data" : [
                [
                   "Perl",
@@ -796,9 +413,13 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "022",
+            "id" : "022"
          },
          {
+            "id" : "023",
+            "name" : "023",
             "data" : [
                [
                   "Perl",
@@ -812,11 +433,11 @@
                   "Blog",
                   12
                ]
-            ],
-            "id" : "023",
-            "name" : "023"
+            ]
          },
          {
+            "name" : "024",
+            "id" : "024",
             "data" : [
                [
                   "Perl",
@@ -830,9 +451,7 @@
                   "Blog",
                   11
                ]
-            ],
-            "id" : "024",
-            "name" : "024"
+            ]
          },
          {
             "data" : [
@@ -849,12 +468,12 @@
                   12
                ]
             ],
-            "id" : "025",
-            "name" : "025"
+            "name" : "025",
+            "id" : "025"
          },
          {
-            "name" : "026",
             "id" : "026",
+            "name" : "026",
             "data" : [
                [
                   "Perl",
@@ -871,8 +490,6 @@
             ]
          },
          {
-            "name" : "027",
-            "id" : "027",
             "data" : [
                [
                   "Perl",
@@ -886,7 +503,9 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "id" : "027",
+            "name" : "027"
          },
          {
             "name" : "028",
@@ -907,6 +526,8 @@
             ]
          },
          {
+            "name" : "029",
+            "id" : "029",
             "data" : [
                [
                   "Perl",
@@ -920,12 +541,9 @@
                   "Blog",
                   12
                ]
-            ],
-            "id" : "029",
-            "name" : "029"
+            ]
          },
          {
-            "id" : "030",
             "data" : [
                [
                   "Perl",
@@ -940,11 +558,10 @@
                   10
                ]
             ],
-            "name" : "030"
+            "name" : "030",
+            "id" : "030"
          },
          {
-            "name" : "031",
-            "id" : "031",
             "data" : [
                [
                   "Perl",
@@ -958,10 +575,13 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "id" : "031",
+            "name" : "031"
          },
          {
             "name" : "032",
+            "id" : "032",
             "data" : [
                [</