from collections import deque n,m=map(int,input().split()) lst=[[]]*n for i in range(n): lst[i]=input().split() parent_map={} pq=deque([(0,0)]) visited={(0,0)} while pq: current_x,current_y=pq.popleft() for neix,neiy in[(current_x+1,current_y),(current_x,current_y+1),(current_x-1,curre...