#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <cmath>
#include <iomanip>
#include <map>
using namespace std;
typedef long long LL;

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