#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef pair<int,int> P;
 
const int INF = 1e9;
const int mod = 1e9+7;
const double EPS = 1e-10;
const double PI = acos(-1.0);
 
int main()
{
    int l,m,n;
    cin >> l >> m >> n;
    m += n/25,n %= 25;
    l += m/4,m %= 4;
    l %= 10;
    cout << l+m+n << endl; 

    return 0;
}