Submission #10093354

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Source Code Expand

from collections import deque

H, W = map(int, input().split())
ab = []
for i in range(H):
    a = list(input())
    ab.append(a)
for i in range(H):
    if "s" in ab[i]:
        sx = ab[i].index("s")
        sy = i
stack = deque([[sy, sx]])
v_list = [[0] * W for i in range(H)]
v_list[sy][sx] = 1
while len(stack) > 0:
    y, x = stack.pop()
    if ab[y][x] == "g":
        print("Yes")
        exit()
    for j, k in ([1, 0], [0, 1], [-1, 0], [0, -1]):
        x_new = x + j
        y_new = y + k
        if x_new < 0 or y_new < 0 or x_new >= W or y_new >= H:
            continue
        if ab[y_new][x_new] != "#" and v_list[y_new][x_new] == 0:
            v_list[y_new][x_new] = 1
            stack.append([y_new, x_new])
print("No")

Submission Info

Judge Result