Codeforces1221C.cpp

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,i,j,q,c,m,x,ans;
    cin>>q;
    while(q--)
    {
        cin>>c>>m>>x;
        int l=0,r=min(c,m);
        while(l<=r)
        {
            int mid=(l+r)/2;
            if(c+m+x-2*mid>=mid)
            {
              ans=mid;
                l=mid+1;
            }
            else r=mid-1;
        }
          cout<<ans<<endl;
    }

}