https://www.acmicpc.net/problem/4179 r, c= map(int, input().split())arr = []for i in range(r): arr.append(list(input()))# print(arr)di, dj = [0, 1, -1, 0], [1, 0, 0, -1]def escape(fire): q = [] q.append((ji, jj, 0)) fire_q = [] fire_q.extend(fire) visited = [[False] * c for _ in range(r)] visited[ji][jj] = True while q: fire_size = len(fire_q) for _ in range..