#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>

int main()
{
	int modded[42],diff=0;
	for (int i = 0; i < sizeof(modded)/4; i++)
		modded[i] = 0;
	for (int i = 0; i < 10; i++)
	{
		int temp=0;
		scanf("%d", &temp);
		temp %= 42;
		modded[temp]++;
	}
	for (int i = 0; i < sizeof(modded) / 4; i++)
		if (modded[i] != 0)
			diff++;

	printf("%d",diff);

	return 0;
}