Submission #2247300

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Source Code Expand

#include<cstdio>
int a[2001][2001],sum1[2001][2001],sum2[2001][2001],sum[2001][2001],n,m,q;
char c[2005];
int main()
{
	scanf("%d%d%d",&n,&m,&q);
	for(int i=1;i<=n;++i){
		scanf("%s",c);
		for(int j=0;j<m;++j)a[i][j+1]=c[j]-48,sum[i][j+1]=sum[i-1][j+1]+sum[i][j]-sum[i-1][j]+a[i][j+1];
	}
	for(int i=1;i<n;++i)for(int j=1;j<=m;++j)sum1[i][j]=sum1[i-1][j]+sum1[i][j-1]-sum1[i-1][j-1]+(a[i][j]&a[i+1][j]);
	for(int i=1;i<=n;++i)for(int j=1;j<m;++j)sum2[i][j]=sum2[i-1][j]+sum2[i][j-1]-sum2[i-1][j-1]+(a[i][j]&a[i][j+1]);
	while(q--){
		int x,y,z,w,b,c,d;
		scanf("%d%d%d%d",&x,&y,&z,&w);
		b=sum[z][w]-sum[z][y-1]-sum[x-1][w]+sum[x-1][y-1];
		c=sum2[z][w-1]-sum2[z][y-1]-sum2[x-1][w-1]+sum2[x-1][y-1];
		d=sum1[z-1][w]-sum1[z-1][y-1]-sum1[x-1][w]+sum1[x-1][y-1];
		printf("%d\n",b-c-d);
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:6:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d",&n,&m,&q);
                          ^
./Main.cpp:8:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s",c);
                ^
./Main.cpp:15:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d%d",&x,&y,&z,&w);
                                ^

Judge Result