https://www.acmicpc.net/problem/11346 11346번: Cornell Party - Retry Ezra Cornell and A. D. White learned their lesson from their last party, so this time they decided to use names instead of identifiers. They also realized that they shouldn’t trust their memories so much, so they’ve decided to write down the guest name www.acmicpc.net 문제 해설 코넬에서 파티를 하는데, 두 명이 각각 참가자들의 명부를 기록한다. 동명이인은 없다. 몇 명이 있는..