add reference to the slitherlink problem

2018-11-22 04:37:08 -08:00
parent 7b5f8c6db9
commit 75ddef3af0
1 changed files with 3 additions and 2 deletions
--- a/examples/cpp/slitherlink_sat.cc
+++ b/examples/cpp/slitherlink_sat.cc
@@ -11,9 +11,10 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-#include <deque>
+// Solve the Slitherlink problem:
+//    see https://en.wikipedia.org/wiki/Slitherlink
+
 #include <string>
-#include <unordered_set>
 #include <vector>

 #include "ortools/base/stringprintf.h"