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


int main()
{
	int month[12];
	int day[31];
	int ans = 0;
	int i;
	int j;
	int n;
	int m;


	for (i = 0; i < 12; i++) {
		month[i] = i + 1;
	}
	for (j = 0; j < 31; j++) {
		day[j] = j + 1;
	}

	for (n = 0; n < 12; n++) {
		for (m = 0; m < 28; m++) {
			if (month[n] ==(floor(day[m] / 10) + day[m] % 10)) {
				ans += 1;
			}
		}
		ans += 2;
	}
	printf("%d\n", ans);
	return 0;
}