#include <iostream> #include <iomanip> using namespace std; int max3(int u, int v, int w){ u = u>v?u:v; //真好用 u = u>w?u:w; return u; } int main() { int a, b, c; float m; while (cin >> a >> b >> c) { m = (max3(a,b+c,c)+max3(a,b,b+c)); m = max3(a+b,b,c)/m; cout <...