杭电acm1093 A+B for Input-Output Practice (V)

#include <stdio.h>
int main()
{
  int N,M,i,j,a,s;
  while(scanf("%d",&N)!=EOF)
  {
      for(i=0;i<N;i++)
      {s=0;
          scanf("%d",&M);
          for(j=0;j<M;j++)
          {
              scanf("%d",&a);
              s=s+a;
          }printf("%d\n",s);
             
          
      } 
  }
    return 0;
}