#include<stdio.h>
int main()
{
	int L,M,N;
	int a,b,c;
	int sum;
	
	scanf("%d",&L);
	scanf("%d",&M);
	scanf("%d",&N);
	
	sum=100*L+25*M+N;
	
	a=(sum%1000)/100;
	b=(sum%100)/25;
	c=sum%25;
	
	printf("%d",a+b+c);
	
	return 0;
}