#include <stdio.h>

int bank(int a_100,int a_25,int a_1)
{
	int count = 0;
	
	a_25 += a_1/25; a_1 %= 25;
	a_100 += a_25/4;  a_25 %= 4;
	a_100 %= 10;
	count = a_100 + a_25 + a_1;
	
	return count;
}

int main(void)
{
	int l,m,n;
	
	scanf("%d%d%d",&l,&m,&n);
	
	printf("%d\n",bank(l,m,n));
	
	return 0;
}