황소개발자

10분컷 import sys input = sys.stdin.readline n = int(input()) mat = [] for i in range(n): mat.append(list(map(int, input().split()))) dx = [0, 0, 1, -1] dy = [1, -1, 0, 0] def bfs(sy, sx, visited, cnt, wh): visited[sy][sx] = 1 q = [] q.append([sy, sx]) while q: y, x = q.pop(0) for i in range(4): ny = y + dy[i] nx = x + dx[i] if 0 wh: bfs(i, j, visited, cnt, wh) cnt += 1 if cnt - 1 == 0: break ans ..