#3314. C++-循环for-计算S=1+2-3+4-5+6-...+(或-)n结果并打印
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ID: 3314
Type: Default
1000ms
256MiB
Tried: 33
Accepted: 14
Difficulty: 5
Uploaded By:
吴泽宏 (wuzehong)
C++-循环for-计算S=1+2-3+4-5+6-...+(或-)n结果并打印
Background
计算S=1+2-3+4-5+6-...+(或-)n结果并打印
n为输入值，1<=n<=100000000
Description
Format
Input
Output
Samples
100
52
100000000
50000002
Limitation
1s, 1024KiB for each test case.