B=[1,3,5,7,8,10,12]
S=[4,6,9,11]
C=0
for i in range(1,29):
    if 2==(i-i % 10)/10 + i % 10:
        C+=1
for j in B:
    for i in range(1,32):
        if j==(i-i % 10)/10 + i % 10:
            C+=1
for j in S:
    for i in range(1,31):
        if j==(i-i % 10)/10 + i % 10:
            C+=1
print(C)