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要注意的一些情况.1.输出可以是"IMPOSSIBLE", Sample Output里没有,看题的时候可能会被忽略了 2,结果为负数的时候和正数的不同 3.Sample Input中第一行的2后面有一个空格和换行,即第一行可以有空格 Followed by: Post your reply here: |
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