#include <iostream>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <algorithm>
#include <cstring>
#include <cstdio>
#include <fstream>
#include <sstream>
using namespace std;
typedef long long ll;

int main(){
    int L, M, N;
    cin >> L >> M >> N;
    
    int res = 0;
    
    M += N / 25;
    res += N % 25;
    
    L += M / 4;
    res += M % 4;
    
    res += L % 10;
    
    cout << res << endl;
    return 0;
}