ps | |
---|---|
링크 | acmicpc.net/… |
출처 | BOJ |
문제 번호 | 6223 |
문제명 | Cow Sorting |
레벨 | 플래티넘 1 |
분류 |
그리디 |
시간복잡도 | O(n) |
인풋사이즈 | n<=10000 |
사용한 언어 | Python |
제출기록 | 30864KB / 76ms |
최고기록 | 76ms |
해결날짜 | 2022/03/02 |
"""Solution code for "BOJ 6223. Cow Sorting".
- Problem link: https://www.acmicpc.net/problem/6223
- Solution link: http://www.teferi.net/ps/problems/boj/6223
Tags: [Greedy]
"""
import sys
def main():
N = int(sys.stdin.readline())
grumpiness = [int(sys.stdin.readline()) for x in range(N)]
min_grumpiness = min(grumpiness)
orders = sorted(range(N), key=grumpiness.__getitem__)
is_visited = [False] * N
answer = 0
for i in range(N):
if is_visited[i]:
continue
g_vals = []
cur = i
while not is_visited[cur]:
is_visited[cur] = True
g_vals.append(grumpiness[cur])
cur = orders[cur]
answer += min(
sum(g_vals) + min(g_vals) * (len(g_vals) - 2),
sum(g_vals) + min(g_vals) + min_grumpiness * (len(g_vals) + 1))
print(answer)
if __name__ == '__main__':
main()