문제https://www.acmicpc.net/problem/17471 해설bfs, 비트마스킹을 통해 해결방문확인 하는 과정이 생각보다 까다로웠음코드123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103#include iostream>#include algorithm>#include vector>#include queue>using namespace std; const int INF = 987654321..