Submission #1612314

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i=(a),i##_end=(b);i<=i##_end;i++)
#define per(i,b,a) for(int i=(b),i##_st=(a);i>=i##_st;i--)
#define x first
#define y second
#define pb push_back
#define mp make_pair
#define debug(x) cerr<<#x" = "<<x<<endl
#define Debug(...) fprintf(stderr, __VA_ARGS__)
#define Es(x,i) for(Edge *i=G[x];i;i=i->nex)
typedef pair<int,int> pii;
typedef long long ll;
const int inf=~0u>>1,MOD=1e9+7;/*
char *TT,*mo,but[(1<<15)+2];
#define getchar() ((TT==mo&&(mo=(TT=but)+fread(but,1,1<<15,stdin),TT==mo))?-1:*TT++)//*/
inline int rd() {
	int x=0,c=0,f=1;
	for(; c<'0'||c>'9'; c=getchar())f=c!='-';
	for(; c>='0'&&c<='9'; c=getchar())x=x*10+c-'0';
	return f?x:-x;
}
const int N=2100;
char G[N][N];
int t[N][N],a[N][N],b[N][N],c[N][N];
int F(int x,int y,int z,int w){
	return (a[z][w]-a[x-1][w]-a[z][y-1]+a[x-1][y-1])-(b[z][w]-b[x-1][w]-b[z][y]+b[x-1][y])-(c[z][w]-c[x][w]-c[z][y-1]+c[x][y-1]);
}
int main() {
	int n = rd(), m = rd(), T = rd();
	rep(i,1,n)scanf("%s",G[i]+1);
	rep(i,1,n)rep(j,1,m){
		t[i][j] = G[i][j] - '0';
	}
	rep(i,1,n)rep(j,1,m){
		a[i][j]=a[i-1][j]+a[i][j-1]-a[i-1][j-1]+t[i][j];
	}
	rep(i,1,n)rep(j,2,m){
		b[i][j]=b[i-1][j]+b[i][j-1]-b[i-1][j-1]+(t[i][j-1]&t[i][j]);
	}
	rep(i,2,n)rep(j,1,m){
		c[i][j]=c[i-1][j]+c[i][j-1]-c[i-1][j-1]+(t[i-1][j]&t[i][j]);
	}
	
	while(T--) {
		int a = rd(), b = rd(), c = rd(), d = rd();
		printf("%d\n",F(a,b,c,d));
	}
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:31:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  rep(i,1,n)scanf("%s",G[i]+1);
                              ^

Judge Result