编译错误

#include<iostream>
#include<iomanip>
using namespace std;
double Max(double a,double b,double c){
    if(a>=b&&a>=c)return a;
    if(b>=a&&b>=c)return b;
    if(c>=a&&c>=b)return c;
}
int main(){
    double a,b,c,m;
    cin>>a>>b>c;
    m=Max(a,b,c)/(Max(a+b,b,c)*Max(a,b,b+c));
    cout<<fixed<<setprecision(2)<<m;
    return 0;
}