4195번 -친구 네트워크다국어
| 시간 제한 | 메모리 제한 | 제출 | 정답 | 맞힌 사람 | 정답 비율 |
|---|---|---|---|---|---|
| 3 초 | 256 MB | 53694 | 15897 | 9992 | 27.585% |
문제
민혁이는 소셜 네트워크 사이트에서 친구를 만드는 것을 좋아하는 친구이다. 우표를 모으는 취미가 있듯이, 민혁이는 소셜 네트워크 사이트에서 친구를 모으는 것이 취미이다.
어떤 사이트의 친구 관계가 생긴 순서대로 주어졌을 때, 두 사람의 친구 네트워크에 몇 명이 있는지 구하는 프로그램을 작성하시오.
친구 네트워크란 친구 관계만으로 이동할 수 있는 사이를 말한다.
입력
첫째 줄에 테스트 케이스의 개수가 주어진다. 각 테스트 케이스의 첫째 줄에는 친구 관계의 수 F가 주어지며, 이 값은 100,000을 넘지 않는다. 다음 F개의 줄에는 친구 관계가 생긴 순서대로 주어진다. 친구 관계는 두 사용자의 아이디로 이루어져 있으며, 알파벳 대문자 또는 소문자로만 이루어진 길이 20 이하의 문자열이다.
출력
친구 관계가 생길 때마다, 두 사람의 친구 네트워크에 몇 명이 있는지 구하는 프로그램을 작성하시오.
제한
예제 입력 1
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예제 출력 1
234224
힌트
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출처
Contest > Waterloo's local Programming Contests > 27 September, 2008 C번
- 문제를 번역한 사람: baekjoon
- 데이터를 추가한 사람: chinjja,jh05013,tlsdydaud1
- 어색한 표현을 찾은 사람: stilltime
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