18003 data/secret/Checkerboard-1004.in data/secret/Checkerboard-1004.ans
18003 data/secret/Checkerboard-1000.in data/secret/Checkerboard-1000.ans
18003 data/secret/Checkerboard-1002.in data/secret/Checkerboard-1002.ans
18003 data/secret/Checkerboard-1005.in data/secret/Checkerboard-1005.ans
18003 data/secret/Checkerboard-1001.in data/secret/Checkerboard-1001.ans
18003 data/secret/Checkerboard-1003.in data/secret/Checkerboard-1003.ans