days = list(range(1,32))

# 2月
count_a = 0
day_count = 0
while day_count < 28:
    add = days[day_count]//10 + days[day_count]%10
    if add == 2:
        count_a += 1
    day_count += 1

# 4月・6月・9月・11月
count_b = 0
day_count = 0
while day_count < 30:
    add = days[day_count]//10 + days[day_count]%10
    if add == 4 or add == 6 or add == 9 or add == 11:
        count_b += 1
    day_count += 1

# 1月・3月・5月・7月・8月・10月・12月
count_c = 0
day_count = 0
while day_count < 31:
    add = days[day_count]//10 + days[day_count]%10
    if add == 1 or add == 3 or add == 5 or add == 7 or add == 8 or add == 10 or add == 12:
        count_c += 1
    day_count += 1

answer = count_a + count_b + count_c
print(answer)