Submission #3267595

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Source Code Expand

#include "iostream"
#include <stdio.h>
#include <algorithm>
#include <stdlib.h>
#include <string>
#include <math.h>
#include <cctype>
#include <stack>
#include <vector>
#include <list>
#include <queue>
#include <set>
#include <map>
using namespace std;
using ll=long long;
#define mod  1000000007

int main(int argc, char const *argv[]) {
  ll n,m;
  std::cin >> n >> m;
  if(n==m && n==1){
    std::cout << "1" << '\n';
    return 0;
  }
  else if(n==1 && m>=2){
    std::cout << m-2 << '\n';
    return 0;
  }

  else if(m==1 && n>=2){
    std::cout << n-2 << '\n';
    return 0;
  }

  else std::cout << (n-2)*(m-2) << '\n';


  return 0;
}

Submission Info

Judge Result