Submission #1574413

---

Source Code Expand

#include <bits/stdc++.h>
#define y1 fvck_y1
using namespace std;

inline int read()
{
	int x=0,f=1; char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1; ch=getchar();}
	while(ch>='0'&&ch<='9'){x=x*10+ch-'0'; ch=getchar();}
	return x*f;
}

int B1[4010][4010],B2[4010][4010];
char sd[10000];
int n,m,q;
int main()
{
	//freopen("read.in","r",stdin);
	n=read(); m=read(); q=read();
	for(int i=1;i<=n;i++)
	{
		scanf("%s",sd);
		for(int j=0;j<m;j++)
			B1[i][j+1]=sd[j]-'0';
	}
	for(int i=1;i<=n;i++)
	{
		for(int j=1;j<=m;j++)
		{
			if(j!=m) B2[i*2-1][j*2]=B1[i][j]&B1[i][j+1];
			if(i!=n) B2[i*2][j*2-1]=B1[i][j]&B1[i+1][j];
		}
	}
	for(int i=1;i<n*2;i++) for(int j=1;j<m*2;j++)
		B2[i][j]+=B2[i-1][j]+B2[i][j-1]-B2[i-1][j-1];
	for(int i=1;i<=n;i++) for(int j=1;j<=m;j++)
		B1[i][j]+=B1[i-1][j]+B1[i][j-1]-B1[i-1][j-1];
	for(int i=1;i<=q;i++)
	{
		int x1=read(), y1=read(),x2=read(), y2=read();
		int X=B1[x2][y2]+B1[x1-1][y1-1]-B1[x1-1][y2]-B1[x2][y1-1];
		int Y=B2[x2*2-1][y2*2-1]+B2[x1*2-2][y1*2-2]-B2[x1*2-2][y2*2-1]-B2[x2*2-1][y1*2-2];
		printf("%d\n",X-Y);
	}
	
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:22:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s",sd);
                 ^

Judge Result