#include <stdio.h>

int main(void)
{
	int pupils[20];

	for (int i = 0; i < 20; i++)
		pupils[i] = 0;

	for (int i = 0; i < 26; i++)
	{
		int growth;
		
		scanf("%d", &growth);
		pupils[growth - 159] ++;
	}

	int sum = 0;

	for (int i = 159; i < 170; i++)
		sum += pupils[i - 159];
	
	return 0;
}