import sys import networkx as netx M = [ list(l) for l in sys.stdin.read().splitlines() ] H = len(M) W = len(M[0]) START = tuple() END = tuple() G = netx.DiGraph() for x in range(H): for y in range(W): k = (x,y) v = M[x][y] if v == 'S': START = k v = 'a' if v == 'E': END = k v = 'z' v = ord(v) for dx,dy in [(-1,0),(1,0),(0,-1),(0,1)]: nx, ny = (x+dx, y+dy) if nx>=0 and nx=0 and ny