#381. 求n的值
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ID: 381
Type: Default
1000ms
128MiB
Tried: 0
Accepted: 0
Difficulty: (None)
Uploaded By:
paxlumen
Tags> 求n的值
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说明
输入一个整数m,求恰好使s=1+2+3+…+n的值大于m时n的值。
输入 10
输出 5
输入1000
输出45样例