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刷计算机编程题目，USACO某道题，因为最近想用java，就写了一个，各种查错+优化之后总算通过了：

TASK: camelot

LANG: JAVA

Compiling...

Compile: OK

Executing...

Test 1: TEST OK [0.187 secs, 30200 KB]

Test 2: TEST OK [0.266 secs, 30200 KB]

Test 3: TEST OK [0.295 secs, 30200 KB]

Test 4: TEST OK [0.475 secs, 30200 KB]

Test 5: TEST OK [0.576 secs, 30200 KB]

Test 6: TEST OK [0.770 secs, 30200 KB]

Test 7: TEST OK [0.259 secs, 30200 KB]

Test 8: TEST OK [0.302 secs, 30200 KB]

Test 9: TEST OK [0.518 secs, 30200 KB]

Test 10: TEST OK [0.540 secs, 30200 KB]

Test 11: TEST OK [0.274 secs, 30200 KB]

Test 12: TEST OK [0.216 secs, 30200 KB]

Test 13: TEST OK [0.223 secs, 30200 KB]

Test 14: TEST OK [0.245 secs, 30200 KB]

Test 15: TEST OK [0.274 secs, 30200 KB]

Test 16: TEST OK [0.252 secs, 30200 KB]

Test 17: TEST OK [0.302 secs, 30200 KB]

Test 18: TEST OK [0.245 secs, 30200 KB]

Test 19: TEST OK [0.274 secs, 30200 KB]

Test 20: TEST OK [0.288 secs, 30200 KB]

All tests OK.

Your program ('camelot') produced all correct answers!

可以看出，这段Java代码平均用时大约在0.4s左右，最慢的数据0.770s，内存(因为我没有用到任何动态内存项目，使用了3.02MB)