#include <bits/stdc++.h>
using namespace std;
 
int main() {
    int t = 1; //cin >> t;
    while(t--){
        unsigned long long a, b, c;
        cin >> a >> b >> c;
        unsigned long long x = max(a, b);
        unsigned long long ans = max(x, c);
        cout << ans << endl;
    }
    return 0;
}