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[Python/ํŒŒ์ด์ฌ] ๋ฐฑ์ค€ 16929๋ฒˆ: Tow Dots
๐Ÿ”์•Œ๊ณ ๋ฆฌ์ฆ˜/๋ฐฑ์ค€

[Python/ํŒŒ์ด์ฌ] ๋ฐฑ์ค€ 16929๋ฒˆ: Tow Dots

2022. 1. 14. 16:41
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๋ฌธ์ œ

 

ํ’€์ด

์‹œ์ž‘ ์ง€์ ๊ณผ ๊ฐ™์€ ๋ฌธ์ž์ธ ๊ฒฝ์šฐ dfs๋ฅผ ์ˆ˜ํ–‰ํ•˜๊ณ 

๊ธธ์ด๊ฐ€ 4 ์ด์ƒ์ด๊ณ  ์‹œ์ž‘ ์ง€์ ์œผ๋กœ ๋Œ์•„์˜จ ๊ฒฝ์šฐ "Yes"๋ฅผ ์ถœ๋ ฅํ•˜๋ฉด ๋œ๋‹ค.

 

์ฝ”๋“œ

import sys
input = sys.stdin.readline

n, m = map(int, input().split())
graph = [list(input().rstrip()) for _ in range(n)]
tempVisited = [[False] * m for _ in range(n)]

dir = ((0, 1), (0, -1), (1, 0), (-1, 0))

def dfs(c, sti, stj, nowi, nowj, cnt):
    for dx, dy in dir:
        ni, nj = nowi + dy, nowj + dx
        if (sti, stj) == (ni, nj) and graph[ni][nj] == c and cnt >= 4:
            print("Yes")
            exit()
        if ni < 0 or ni >= n or nj < 0 or nj >= m or tempVisited[ni][nj] or graph[ni][nj] != c:  continue
        tempVisited[ni][nj] = True
        dfs(c, sti, stj, ni, nj, cnt + 1)

for i in range(n):
    for j in range(m):
        tempVisited = [[False] * m for _ in range(n)]
        tempVisited[i][j] = True
        dfs(graph[i][j], i, j, i, j, 1)

print("No")

 

๋งˆ๋ฌด๋ฆฌ

.

 

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