Not so Mobile UVA

#include<iostream>
using namespace std;
int solve(int &W)       /*这里一定要用引用,为了赋给它值*/
{
    int wl, dl, wr, dr;
    cin >> wl >> dl >> wr >> dr;
    bool f1 = true, f2 = true;
    if(!wl) f1 = solve(wl);     /*沿着这个子天平找下去*/
    if(!wr) f2 = solve(wr);
    W = wl + wr;        /*将它的重  加起来*/
    return ( f1 && f2 && (wl*dl == wr*dr));
}
int main()
{
    int T, W;
    cin >> T;
    while(T--)
    {
        if(solve(W))
            cout << "YES" << endl;
        else
            cout << "NO" << endl;
        if(T)
            cout << endl;
    }
    return 0;
}
原文地址:https://www.cnblogs.com/KeepZ/p/11143789.html