#include <iostream>
using namespace std;

const int COINNUM = 3;
const int p[COINNUM] = {100,25,1};

int main(){
    int total = 0, res = 0;
    for(int i = 0; i < COINNUM; i++){
        int coin; cin >> coin;
        total += p[i] * coin;
    }
    total %= 1000;
    for(int i = 0; i < COINNUM; i++){
        res += total / p[i];
        total %= p[i];
    }
    cout << res << endl;
}