Where is the canteen
Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 1143 Accepted Submission(s): 327
Problem Description
After a long drastic struggle with himself, LL decide to go for some snack at last. But when steping out of the dormitory, he found a serious problem : he can't remember where is the canteen... Even worse is the campus is very dark
at night. So, each time he move, he check front, back, left and right to see ......
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