S = 0
T = [1, 3, 5, 7, 8, 10, 12]
U = [2]
V = [4, 6, 9, 11]

for i in T:
    for j in range(32):
        A = j//10 + j%10
        if A == i:
            S +=1

for i in U:
    for j in range(29):
        A = j//10 + j%10
        if A == i:
            S +=1

for i in V:
    for j in range(31):
        A = j//10 + j%10
        if A == i:
            S +=1

print(S)