#include<iostream> #include<iomanip> using namespace std; int max(int a,int b,int c) { int max_val=a; if (b>max_val) { max_val=b; } if (c>max_val) { max_val=c; } return max_val; } int main() { int a,b,c; cin>>a>>b>>c; int max_val=max(a,max(b,c)); int denominator=max_val*max(a+b,b,c)*max(a,b,b+c); double m=static_cast<double>(max_val)/denominator; cout<<fixed<<setprecision(3)<<m<< endl; return 0; }