1 files changed, 12 insertions, 0 deletions
diff --git a/prolog/problems/lists/sum_2/en.py b/prolog/problems/lists/sum_2/en.py
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+++ b/prolog/problems/lists/sum_2/en.py
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+id = 118
+name = 'sum/2'
+slug = 'find the sum of all elements in list'
+
+description = '''\
+<p><code>sum(L, Sum)</code>: <code>Sum</code> is the sum of all elements in the list <code>L</code>.</p>
+<pre>
+  ?- sum([1,2,3], Sum).
+    Sum = 6.
+</pre>'''
+
+hint = {}