From 95e2fe57f6e4639f6ae9f1fef368829d5090dbf6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ale=C5=A1=20Smodi=C5=A1?= <aless@guru.si>
Date: Tue, 18 Aug 2015 16:06:19 +0200
Subject: Exported all problems from the SQLite database into the new directory
 structure.

---
 prolog/problems/clp_r/center_3/common.py | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 prolog/problems/clp_r/center_3/common.py

(limited to 'prolog/problems/clp_r/center_3/common.py')

diff --git a/prolog/problems/clp_r/center_3/common.py b/prolog/problems/clp_r/center_3/common.py
new file mode 100644
index 0000000..1474ef1
--- /dev/null
+++ b/prolog/problems/clp_r/center_3/common.py
@@ -0,0 +1,20 @@
+id = 158
+group = 'clp_r'
+number = 68
+visible = True
+facts = None
+
+solution = '''\
+memb158(X, [X|_]).
+memb158(X, [_|T]) :-
+    memb158(X, T).
+
+check158([], _, _).
+check158([X/Y | T], R, Xc/Yc) :-
+    { (X-Xc)*(X-Xc) + (Y-Yc)*(Y-Yc) =< R*R },
+    check158(T, R, Xc/Yc).
+
+center(L, R, Xc/Yc) :-
+    memb158(Xc/Yc, L),
+    check158(L, R, Xc/Yc).
+'''
-- 
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