UVA 12502 - Three Families

#include<bits/stdc++.h>
#define i64 long long
#define mx(a,b,c) max(a,max(b,c))
#define mn(a,b,c) min(a,min(b,c))
#define eef else if
#define ff(i,s,e) for(int i=(s); i<e; i++)
#define ff2(i,s,e) for(int i=(s); i>=e; i--)
#define sf scanf
#define pf printf
#define dbug(x) cout<<"x = "<<x<<endl
#define newl cout<<"\n"
#define putcase cout<<"Case "<<++cse<<":"
using namespace std;
int main()
{
    float a , b, total;
    int t;
    cin>>t;
    while(t--){
        cin>>a>>b>>total;
        pf("%.0f\n",(total/((a+b)/3))*(a-((a+b)/3)));
    }
    return 0;
}