#include<iostream>
#include<vector>
#include<algorithm>
#include<cstdio>
#include<cmath>
#include<string>
using namespace std;
int main(){
    int L,M,N,sum=0;
    cin >> L >> M >> N;
    M += N / 25;
    sum += N % 25;
    L += M / 4;
    sum += M % 4;
    sum += L / 10;
    sum += L % 10;
    cout << sum; 
    return 0;
}