https://www.acmicpc.net/problem/10026 # https://www.acmicpc.net/problem/10026# BFSfrom collections import deque, defaultdictN = int(input())MAP = []RGB = defaultdict(list)for n in range(N+2) : if n == 0 or n == N+1 : MAP.append('0'*(N+2)) continue line = input() for idx, l in enumerate(line) : if l == 'R' : RGB['R'].append((n-1, idx)) elif l == 'G'..