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;}