Submission #2247032

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Source Code Expand

#include<cstdio>
using namespace std;
int n,sum[2005][2005],u[2005][2005],m,l[2005][2005],t[2005][2005];
char map[2005][2005];
int main()
{
	int q,x1,y1,x2,y2;
	scanf("%d%d%d",&n,&m,&q);
	for(int i=1;i<=n;i++) scanf("%s",map[i]+1);
	for(int i=1;i<=n;i++)
	for(int j=1;j<=m;j++){
		sum[i][j]=sum[i-1][j]+sum[i][j-1]-sum[i-1][j-1];
		u[i][j]=u[i-1][j]+u[i][j-1]-u[i-1][j-1];
		l[i][j]=l[i-1][j];t[i][j]=t[i][j-1];
		if(map[i][j]=='1'){
			sum[i][j]++;
			if(map[i-1][j]=='1') u[i][j]++,t[i][j]++;
			if(map[i][j-1]=='1') u[i][j]++,l[i][j]++;
		}
	}
	while(q--)
	{
		scanf("%d%d%d%d",&x1,&y1,&x2,&y2);
		printf("%d\n",sum[x2][y2]-sum[x1-1][y2]-sum[x2][y1-1]+sum[x1-1][y1-1]-(u[x2][y2]-u[x1-1][y2]-u[x2][y1-1]+u[x1-1][y1-1]-t[x1][y2]-l[x2][y1]+t[x1][y1-1]+l[x1-1][y1]));
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:8:26: 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:9:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=n;i++) scanf("%s",map[i]+1);
                                            ^
./Main.cpp:23:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d%d",&x1,&y1,&x2,&y2);
                                    ^

Judge Result