Submission #1356745

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Source Code Expand

#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;

int H,W;
int C[105][105];
int Sum[105][105];

int main(){

cin>>H>>W;

for(int i=0; i<H; i++){
    for(int j=0; j<W; j++) scanf("%d",&C[i][j]);
}

for(int i=1; i<=H; i++){
    for(int j=1; j<=W; j++){
        if((i+j)%2) Sum[i][j]=Sum[i-1][j]+Sum[i][j-1]-Sum[i-1][j-1]-C[i-1][j-1];
        else Sum[i][j]=Sum[i-1][j]+Sum[i][j-1]-Sum[i-1][j-1]+C[i-1][j-1];
    }
}

int ans=0;
for(int i=0; i<H; i++){
    for(int j=0; j<W; j++){
        for(int n=i+1; n<=H; n++){
            for(int m=j+1; m<=W; m++){
                if(Sum[n][m]-Sum[n][j]-Sum[i][m]+Sum[i][j]==0){
                    ans=max(ans,(n-i)*(m-j));
                }
            }
        }
    }
}

cout<<ans<<endl;

}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:15:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     for(int j=0; j<W; j++) scanf("%d",&C[i][j]);
                                                ^

Judge Result