ans = 0
d = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
for i in range(1, 13):
    day = d[i-1]
    for j in range(1, day):
        if i == sum(int(_) for _ in list(str(j))):
            ans += 1
print(ans)