#include<stdio.h>
int main(void){
	int l,m,n,all,c=0,buf;
	scanf("%d%d%d",&l,&m,&n);
	all = 100*l + 25*m + n;
	all %= 1000;
	c += all / 100;
	all %= 100;
	c += all / 25;
	all %= 25;
	c += all;
	
	printf("%d\n",c);
	return 0;
}