12 files changed, 24 insertions, 0 deletions
diff --git a/prolog/problems/sorting/is_sorted_1/common.py b/prolog/problems/sorting/is_sorted_1/common.py
index 2feb134..4bb3fa9 100644
--- a/prolog/problems/sorting/is_sorted_1/common.py
+++ b/prolog/problems/sorting/is_sorted_1/common.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 id = 121
 group = 'sorting'
 number = 28
diff --git a/prolog/problems/sorting/is_sorted_1/en.py b/prolog/problems/sorting/is_sorted_1/en.py
index c4bd025..ab8e2dc 100644
--- a/prolog/problems/sorting/is_sorted_1/en.py
+++ b/prolog/problems/sorting/is_sorted_1/en.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 id = 121
 name = 'is_sorted/1'
 slug = 'check if list is sorted'
diff --git a/prolog/problems/sorting/isort_2/common.py b/prolog/problems/sorting/isort_2/common.py
index 0b1aa47..94f5f42 100644
--- a/prolog/problems/sorting/isort_2/common.py
+++ b/prolog/problems/sorting/isort_2/common.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 id = 123
 group = 'sorting'
 number = 30
diff --git a/prolog/problems/sorting/isort_2/en.py b/prolog/problems/sorting/isort_2/en.py
index 3a3dea0..d9b3796 100644
--- a/prolog/problems/sorting/isort_2/en.py
+++ b/prolog/problems/sorting/isort_2/en.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 id = 123
 name = 'isort/2'
 slug = 'sort a list using insertion sort'
diff --git a/prolog/problems/sorting/pivoting_4/common.py b/prolog/problems/sorting/pivoting_4/common.py
index 278f694..a8ff2f4 100644
--- a/prolog/problems/sorting/pivoting_4/common.py
+++ b/prolog/problems/sorting/pivoting_4/common.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 id = 124
 group = 'sorting'
 number = 31
diff --git a/prolog/problems/sorting/pivoting_4/en.py b/prolog/problems/sorting/pivoting_4/en.py
index 4a1ab8c..5a5e171 100644
--- a/prolog/problems/sorting/pivoting_4/en.py
+++ b/prolog/problems/sorting/pivoting_4/en.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 id = 124
 name = 'pivoting/4'
 slug = 'split a list according to the pivot'
diff --git a/prolog/problems/sorting/quick_sort_2/common.py b/prolog/problems/sorting/quick_sort_2/common.py
index 5eff940..9c2b261 100644
--- a/prolog/problems/sorting/quick_sort_2/common.py
+++ b/prolog/problems/sorting/quick_sort_2/common.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 id = 125
 group = 'sorting'
 number = 32
diff --git a/prolog/problems/sorting/quick_sort_2/en.py b/prolog/problems/sorting/quick_sort_2/en.py
index b0d4ce1..bed1a83 100644
--- a/prolog/problems/sorting/quick_sort_2/en.py
+++ b/prolog/problems/sorting/quick_sort_2/en.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 id = 125
 name = 'quick_sort/2'
 slug = 'sort a list using quicksort'
diff --git a/prolog/problems/sorting/sins_3/common.py b/prolog/problems/sorting/sins_3/common.py
index 8ebfee4..ba50e65 100644
--- a/prolog/problems/sorting/sins_3/common.py
+++ b/prolog/problems/sorting/sins_3/common.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 id = 122
 group = 'sorting'
 number = 29
diff --git a/prolog/problems/sorting/sins_3/en.py b/prolog/problems/sorting/sins_3/en.py
index 684a619..384fbf7 100644
--- a/prolog/problems/sorting/sins_3/en.py
+++ b/prolog/problems/sorting/sins_3/en.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 id = 122
 name = 'sins/3'
 slug = 'insert an element at correct position into a sorted list'
diff --git a/prolog/problems/sorting/slowest_sort_ever_2/common.py b/prolog/problems/sorting/slowest_sort_ever_2/common.py
index 5f4c283..267f06a 100644
--- a/prolog/problems/sorting/slowest_sort_ever_2/common.py
+++ b/prolog/problems/sorting/slowest_sort_ever_2/common.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 id = 126
 group = 'sorting'
 number = 33
diff --git a/prolog/problems/sorting/slowest_sort_ever_2/en.py b/prolog/problems/sorting/slowest_sort_ever_2/en.py
index 3018ec6..0f39645 100644
--- a/prolog/problems/sorting/slowest_sort_ever_2/en.py
+++ b/prolog/problems/sorting/slowest_sort_ever_2/en.py
@@ -1,3 +1,5 @@
+# coding=utf-8
+
 id = 126
 name = 'slowest_sort_ever/2'
 slug = 'sort a list by randomly permuting elements'