#include<stdio.h>
int main(void){
	int l, m, n;
	scanf("%d", &l);
	scanf("%d", &m);
	scanf("%d", &n);
	
	m += n / 25;
	n = n % 25;
	l += m / 4;
	m = m % 4;
	l = l % 10;
	
	printf("%d\n", l+m+n);
}