portal만들고 중복체크만해줌. import sys input = sys.stdin.readline from collections import deque def bfs(start): q = deque() q.append((start,0)) visited[start] = True while q: cur_node, cnt = q.popleft() for i in range(1,7): next_node = cur_node+i if next_node >= 100: return cnt+1 if visited[next_node]: continue visited[next_node] = True if next_node in port: if not visited[port[next_node]]: visited[port[..