Submission #3246825

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Source Code Expand

#include <iostream>
#include <cstdlib>
#include <vector>
#include <algorithm>
#include <math.h>
using namespace std;

int main()
{
    long n, m;
    long answer;
    cin >> n >> m;
    if (n == 1 && m == 1){
        answer = 1;
    }
    else if (n == 1 && m > 2){
        answer = max(0, (int)(m-2));
    }
    else if (m == 1 && n > 2){
        answer = max(0, (int)(n-2));
    }
    else if ((n == 2 && m > 2) || (m == 2 && n > 2)){
        answer = 0;
    }
    else { // n >= 3 && m >= 3
        answer = (n-2)*(m-2);
    }
    cout << answer << endl;
}

Submission Info

Judge Result