#include <algorithm>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <string>
#include <vector>
using namespace std;
typedef pair<int, int> pii;
#define rep(i,x) for(int i=0;i<(int)(x);i++)

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;
}