#include <bits/stdc++.h>
using namespace std;

int main(){
    int L,M,N; cin >> L >> M >> N;
    int total=(100*L+25*M+N)%1000;
    
    int cL; int cM; int cN;
    cL=total/100;
    cM=(total%100)/25;
    cN=total%25;
    
    cout << cL+cM+cN << endl;
    return 0;
}