#include<iostream> #include<iomanip> using namespace std; typedef int i; i x(i a,i b,i c){ if(a>=b&&b>=c) return a; else return x(b,c,a); } i main(){ i a,b,c; cin>>a>>b>>c; double m=x(a,b,c); m=m/x(a+b,b,c); m=m/x(a,b,b+c); cout<<fixed<<setprecision(3)<<m; return 0; }