武汉科技大学ACM ：1008: A+B for Input-Output Practice (VIII)

Problem Description

Your task is to calculate the sum of some integers.

Input

Input contains an integer N in the first line, and then N lines follow. Each line starts with a integer M, and then M integers follow in the same line.

Output

For each group of input integers you should output their sum in one line, and you must note that there is a blank line between outputs.

Sample Input

3
4 1 2 3 4
5 1 2 3 4 5
3 1 2 3

Sample Output

10

15

6

#include <iostream>
using namespace std;  

int main()
{
    int N;
    cin >> N;
    while (N--)
    {
        int M,sum = ;
        cin >> M;
        while (M--)
        {
            int i;
            cin >> i;
            sum += i;
        }
        cout << sum << endl;
        if (N != )cout << endl;//没有此行运行时会出现错误：Presentation Error
    }  

return ;
}