">#include<algorithm> using namespace std; double max(double a,double b,double c){ double x[3]; x[0]=a,x[1]=b,x[2]=c; sort(x,x+3); return x[2]; } int main(){ double a,b,c; cin>>a>>b>>c; printf("%.2f",max(a+b,b,c)/(max(a,b+c)+max(a,b,b+c))); re...