#include<stdio.h>
#include<math.h>

int main(void){
	
	int a, i, sum = 0;
	
	for(i = 0;i < 5;i++){
		scanf("%d", &a);
		if(a % 15 == 0){
			sum += 8;
			
		}
		else if(a % 3 == 0 || a % 5 == 0){
			sum += 4;
		}
		else{
			sum += log10(a) + 1;
		}
		
	}
	printf("%d\n", sum);

	return 0;
}