#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>

int HappyCheck(int tuki, int dayNum);

int main()
{
	int cnt = 0;
	for (int i = 1;i <= 12;i++)
	{
		if (i == 2)
		{
			cnt += HappyCheck(i, 28);
		}
		else if (((i >= 1 && i <= 7) && i % 2 == 1) || (i >= 8 && i % 2 == 0))
		{
			cnt += HappyCheck(i, 31);
		}
		else
		{
			cnt += HappyCheck(i, 30);
		}
	}

	printf("%d\n", cnt);

	return 0;
}

int HappyCheck(int tuki, int dayNum)
{
	int num = 0;
	int cnt = 0;
	for (int i = 1;i <= dayNum;i++)
	{
		if (i % 10 == 0)
		{
			num += 10;
		}
		int a = i - num;
		int b = num / 10;

		if (a + b == tuki)
		{
			cnt++;
		}
	}

	return cnt;
}