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If you WA 7 for many times, try to mod p when you output. It was told by onp. You are right.
In test 7, it seems that p = 1, and d = 0.
So, if your program doesn't mode p in initialization, it might produce wrong answers. Don`t forget about d = 0 and p = 1, =)
Edited by author 16.08.2010 03:58 |
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