Submission #857100

---

Source Code Expand

#include <stdio.h>
int N,A;
int x[51];
long long int ans=0;
void check(int S){
  int i;
  int c=0,res=0;
  for(i=N-1; i>=0; i--){
    if(S>>i&1){res+=x[i];c++;}
  }
  if(res==A*c){ans++;}
}
void subset(){
  int S;
  for( S = 1; S < (1<<N); S++){
    check(S);
  }
}
int main(){
  int i,j;
  scanf("%d %d",&N,&A);
  if(N>16)return 0;
  for(i=0;i<N;i++)scanf("%d",&x[i]);
  subset();
  printf("%lld\n",ans);
  return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:21:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&N,&A);
   ^
./Main.c:23:19: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   for(i=0;i<N;i++)scanf("%d",&x[i]);
                   ^

Judge Result