#include <iostream>
using namespace std;

int main() {
    int l = 0,m=0,n=0,o=0,p=0,q=0,r=0,s=0,t=0,u=0;
    cin >> l >> m >> n;
    s = 100*l + 25*m + 1*n;
    p = s/1000;
    t = s - 1000*p;
    q = t/100;
    u = t - 100*q;
    r = u/25;
    o = u - 25*r;
    cout << q + r + o << endl;
    return 0;
}