阅读程序写结果:

#include<iostream> using namespace std; int main() { int i, a, b, c, d, f[4]; for(i = 0; i < 4; i++) cin >> f[i]; a = f[0] + f[1] + f[2] + f[3]; a = a / f[0]; b = f[0] + f[2] + f[3]; b = b / a; c = (b * f[1] + a) / f[2]; d = f[(b / c ) % 4]; if(f[(a + b + c + d) % 4] > f[2]) cout << a + b<< endl; else cout << c + d << endl; return 0; }

输入：9 19 29 39