ํฐ์คํ ๋ฆฌ ๋ทฐ
- 2606
์ ์ญ๋ณ์๋ฅผ ์ฌ์ฉํด์ cnt๊ฐ์ ์ฒดํฌํ๋๋ผ ์ ๋จน์๋๋ฐ
๊ตณ์ด ๊ทธ๋ด ํ์๊ฐ ์์๋ค
์ด์ฐจํผ ๋ฐฉ๋ฌธํ ๊ฐ์ visited์ ์ ์ฅํ๊ธฐ ๋๋ฌธ์
sum(visited) -1 ํด์ฃผ๋ฉด ๋๋ ๊ฒ!
*์๊ฐ์ ์ ํ ์๊ฐ์ ๋ฐ์!!
import sys
from collections import deque
input = sys.stdin.readline
N = int(input().rstrip())
M = int(input().rstrip())
graph = [[0]*(N+1) for i in range(N+1)]
visited = [0]*(N+1)
for i in range(M):
n1, n2 = map(int, input().rstrip().split())
graph[n1][n2] = graph[n2][n1] = 1
def DFS(V):
global cnt
visited[V] = 1
for i in range(1, N+1):
if visited[i] == 0 and graph[V][i] == 1:
cnt += 1
DFS(i)
cnt = 0
DFS(1)
print(cnt)
๋ฐ์ํ
'Programming > ๋ฐฑ์ค' ์นดํ ๊ณ ๋ฆฌ์ ๋ค๋ฅธ ๊ธ
230228 [1327: ์ํธ๊ฒ์] (0) | 2023.09.02 |
---|---|
230219 [10026: DFS] (0) | 2023.09.02 |
230219 [1260: DFS&BFS] (0) | 2023.09.02 |
230207 [1929 : ๋ ๋น ๋ฅด๊ฒ ์์ ๊ตฌํ๊ธฐ] (0) | 2023.09.02 |
230204 [๊ธฐ๋ณธ์ํ 1] (0) | 2023.09.02 |
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