#include<iostream>

using namespace std;

int main(){
    int L,M,N,totalmoney, numberOfCoin=0;
    cin >> L >> M >> N;
    totalmoney = 100 * L + 25 * M + N;
    totalmoney = totalmoney % 1000;
    numberOfCoin += totalmoney / 100;
    totalmoney = totalmoney % 100;
    numberOfCoin += totalmoney / 25;
    totalmoney = totalmoney % 25;
    numberOfCoin += totalmoney;
    cout << numberOfCoin << endl;
}