백준 1987 알파벳
from collections import deque dy = (0, 1, 0, -1) dx = (1, 0, -1, 0) R, C = map(int, input().split()) move_board = [input() for _ in range(R)] check = [[set() for _ in range(C)] for _ in range(R)] ans = 0 deq = deque() deq.append((0, 0, move_board[0][0])) check[0][0].add(move_board[0][0]) def err(a, b): return 0
2022. 6. 13.
