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-rw-r--r--prolog/problems/clp_fd/gcd_3/common.py16
1 files changed, 16 insertions, 0 deletions
diff --git a/prolog/problems/clp_fd/gcd_3/common.py b/prolog/problems/clp_fd/gcd_3/common.py
new file mode 100644
index 0000000..8ab99ef
--- /dev/null
+++ b/prolog/problems/clp_fd/gcd_3/common.py
@@ -0,0 +1,16 @@
+id = 149
+group = 'clp_fd'
+number = 61
+visible = True
+facts = None
+
+solution = '''\
+cd(X, Y, CD):-
+ X #= _ * CD,
+ Y #= _ * CD,
+ indomain(CD).
+
+gcd(X, Y, GCD):-
+ cd(X, Y, GCD),
+ \+ ( cd(X, Y, CD), CD > GCD ).
+'''