#include<iostream>
using namespace std; 
int main(){
	double a1,a2,a3,max=0;
	cin>>a1>>a2>>a3;
    if(a1>max){
        max = a1;
    } 
    if(a2>max){
        max = a2;
    }
    if(a3>max){
        max = a3;
    }
    cout<<max;
    return 0;
}