#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,b,c,d,e,w;
    cin>>a>>b>>c>>d>>e;
    w=a;
    if(b>w) swap(b,w);
    if(c>w) swap(c,w);
    if(d>w) swap(d,w);
    if(e>w) swap(e,w);
    cout<<w;
} 
/**************************************************************
	Problem: 1736
	User: wangyiyang
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/