#include <iostream>
#include <cstdlib>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;
int main(){
    int L, M, N; cin >> L >> M >> N;
    if(N / 25 != 0){
        M = M + N / 25;
        N = N % 25;
    }
    if(M / 4 != 0){
        L = L + M / 4;
        M = M % 4;
    }
    if(L / 10 != 0){
        L = L % 10;
    }
    int cnt = L + M + N;
    cout << cnt << endl;
}