18 lines
297 B
C++
18 lines
297 B
C++
/// Gheorghies Alexandru
|
|
#include<bits/stdc++.h>
|
|
|
|
using namespace std;
|
|
typedef long long ll;
|
|
void tc(){
|
|
ll n,m;
|
|
cin>>n>>m;
|
|
cout<<(n*m*2+2)/3<<'\n';
|
|
}
|
|
int main()
|
|
{
|
|
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
|
|
ll t; cin>>t; while(t--)
|
|
tc();
|
|
return 0;
|
|
}
|