#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>
#include <iomanip>
#include <stack>
#include <algorithm>
#include <string>
#include <map>
#include <iterator>
#include <set>
#include <queue>

using namespace std;


int main() {

    int L, M, N;
    cin >> L >> M >> N;

    M += N / 25;
    N = N % 25;
    L += M / 4;
    M = M % 4;
    int O = L / 10;
    L = L % 10;

    cout << (L + M + N) << endl;

    return 0;
}