hduoj1096,A+B for Input-Output Practice (VIII)

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

code:

#include<iostream>using namespace std;int main(){    int n,m,x,sum;    cin>>n;    while(n--)    {        int Y=n;        sum=0;        cin>>m;        while(m--)        {            cin>>x;            sum+=x;        }        if(Y=n)            cout<<sum<<endl;        else if(Y!=n)            cout<<endl<<sum<<endl;    }    return 0;}