#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

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