Submission #11224506

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Source Code Expand

import sys

H,W = map(int,input().split())
c = [input() for i in range(H)]

for i,h in enumerate(c):
    for j,w in enumerate(h):
        if w == 's':
            s_h = i
            s_w = j
        if w == 'g':
            g_h = i
            g_w = j

todo = [[s_h,s_w]]
seen = [[0]*W for i in range(H)]

while len(todo) > 0:
    h,w = todo.pop()
    if c[h][w] == 'g':
        print('Yes')
        sys.exit()
    seen[h][w] = 1
    for i,j in ([1,0],[-1,0],[0,1],[0,-1]):
        next_h = h+i
        next_w = w+j
        if next_h < 0 or next_h >=H or next_w < 0 or next_w >= W:
            continue
        elif c[next_h][next_w] != '#' and seen[next_h][next_w] == 0 and [next_h,next_w] not in todo: 
            todo.append([next_h,next_w])

Submission Info

Judge Result