#include <stdio.h>

int main(void)
{
	short l,m,n,ans;
	long sum;
	scanf("%hd %hd %hd",&l,&m,&n);

	sum = 100*l + 25*m + 1*n;
	sum = sum % 1000;
	ans = sum / 100;
	sum = sum % 100;
	ans += sum / 25;
	ans += sum % 25;

	printf("%hd\n",ans);
	return 0;
}