1366A - Shovels and Swords - CodeForces Solution

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
int main()
{
  int t;
  cin >> t;
  while(t--){
    ll a,b;
    cin >> a >> b;
    if(a!=0 && b!=0){
    if(2*a<b){
      cout << a << endl;
    }else if(a>2*b){
      cout << b << endl;
    }else{
      cout << (a+b)/3 << endl;
    }  
    }else{
      cout << 0 << endl;
    }
  }
}