#include <stdio.h>
#include <algorithm>
#include <deque>
using namespace std;
using ll = long long;

//32
int main() {
	int l, m, n;
	scanf("%d %d %d", &l, &m, &n);
	m += n / 25;
	l += m / 4;
	n %= 25;
	m %= 4;
	l %= 10;
	printf("%d\n", l + m + n);
}