#include <stdio.h>

int main() {
	int l, m, n, sum = 0;

	scanf("%d %d %d", &l, &m, &n);

	sum += n % 25;	m += n / 25;
	sum += m % 4;	l += m / 4;
	sum += l % 10;

	printf("%d\n", sum);

	return 0;
}