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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define int long long
  4.  
  5. int32_t main() {
  6.     ios::sync_with_stdio(false);
  7.     cin.tie(NULL);
  8.  
  9.     int m,n;
  10.     cin>>m>>n;
  11.     cout<<m*n/2<<endl;
  12.     return 0;
  13. }
  14.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin 
2 4
stdout 
4
https://ideone.com/ZnAYhU
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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