Submission #720387

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Source Code Expand

#include <stdio.h>

#define NMAX 100002

int main(){
     int ret;
     int i,j,k;
     int N,K;
     int a[NMAX];
     unsigned long long int tmp;
     unsigned long long int total;

     ret=scanf("%d %d",&N,&K);

     for(i=1;i<=N;i++){
          scanf("%d",&a[i]);
     }

     tmp=0;
     for(i=1;i<=K;i++){
          tmp += a[i];
     }
     total=tmp;

     for(i=2;i<=(N-K+1);i++){
          tmp = tmp - a[i-1] + a[K+i-1];
          total += tmp;
     }
     printf("%lld\n",total);
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:16:11: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
           scanf("%d",&a[i]);
           ^

Judge Result