[구현/수학] 백준 16017 Telemarketer or not? - 파이썬(Python)

[ Contents ] 1. 문제 (링크 참조) 16017번: Telemarketer or not?

Here at the Concerned Citizens of Commerce (CCC), we have noted that telemarketers like to use seven-digit phone numbers where the last four digits have three properties. Looking just at the last four digits, these properties are: the first of these four d www.acmicpc.net 2.

문제 풀이 전화번호 뒷 4자리가 주어집니다. 1번째와 4번째 숫자가 8 또는 9이고, 2번째와 3번째 숫자가 같으면 '.....