The Sum of 1...N
时间: 1ms 内存:128M
描述:
Given an integer n,your task is to calculate 1+2+...+N;
输入:
The first line of input contains an integer T, indicating the number of test cases (T<=20)
The each test case contains a single positive integer N(N<=2^32).
输出:
For each input you should output the sum of 1+2+...+N in one line.(The result must less than 2^63)
示例输入:
2
10
1
示例输出:
55
1
提示:
参考答案:
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