A neighborhood co-op library issues heritage membership cards to its longtime patrons. Every card is printed with a fixed 15-character code made only of uppercase English letters and digits: the first 10 characters form the card's serial number, the 11th character is a single uppercase letter identifying the issuing branch, the 12th and 13th characters are two digits giving the cardholder's age, and the final two characters are an alphanumeric checkout-counter code. The library wants to know how many issued cards belong to members who are strictly older than 60, since those members automatically qualify for the heritage discount.

Given the list of card codes, count how many of them belong to cardholders strictly older than 60.

Input format

• Line 1 contains a single integer n, the number of cards.
• Each of the next n lines contains one card code: a string of exactly 15 characters drawn from uppercase English letters (A-Z) and digits (0-9). The characters at 1-indexed positions 12 and 13 are always digits and together form the cardholder's two-digit age, from "00" to "99".

Output format

Print a single integer: the number of cards whose two-digit age value is strictly greater than 60.

Constraints

• 1 <= n <= 100
• Every card code has length exactly 15 and consists only of uppercase English letters and digits.
• The two age digits always form a value between 00 and 99, inclusive.

3
AB12345678X75Z9
CD98765432Y60W1
EF11223344Z45Q2

1

4
GH55667788K61R3
IJ00998877L99S4
KL11335577M60T5
MN22446688N00U6

2