#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef string str;
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    ll a, b, c;
    cin >> a >> b >> c;
    ll r1 = a % 25, c25 = a / 25;
    ll t25 = b + c25, r25 = t25 % 20, c100 = (t25 / 20) * 5;
    ll t100 = c + c100, r100 = t100 % 10;
    cout << r1 + r25 + r100 << "\n";
    return 0;
}