목차

추 정렬하기

ps
링크acmicpc.net/…
출처BOJ
문제 번호1851
문제명추 정렬하기
레벨다이아몬드 5
분류

그리디

시간복잡도O(n)
인풋사이즈n<=100,000
사용한 언어Python
제출기록30864KB / 76ms
최고기록76ms
해결날짜2022/02/28

풀이

코드

"""Solution code for "BOJ 1851. 추 정렬하기".

- Problem link: https://www.acmicpc.net/problem/1851
- Solution link: http://www.teferi.net/ps/problems/boj/1851

Tags: [Greedy]
"""

import sys


def main():
    n = int(sys.stdin.readline())
    w = [int(sys.stdin.readline()) for x in range(n)]

    min_w = min(w)
    orders = sorted(range(n), key=w.__getitem__)
    is_visited = [False] * n
    answer = 0

    for i in range(n):
        if is_visited[i]:
            continue
        weights = []
        cur = i
        while not is_visited[cur]:
            is_visited[cur] = True
            weights.append(w[cur])
            cur = orders[cur]
        answer += min(
            sum(weights) + min(weights) * (len(weights) - 2),
            sum(weights) + min(weights) + min_w * (len(weights) + 1))
    print(answer)


if __name__ == '__main__':
    main()