Submission #4048654

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Source Code Expand

H, W = map(int, input().split())
art = []
ansflag = 1
for i in range(H):
    art.append(input())
for i in range(H):
    for j in range(W):
        if art[i][j] == "#":
            flag = 0
            for a in [1, -1]:
                try:
                    if art[i][j+a] == "#":
                        flag = 1
                except IndexError:
                    pass
                try:
                    if art[i+a][j] == "#":
                        flag = 1
                except IndexError:
                    pass
            if flag == 0:
                ansflag = 0
if ansflag == 0:
    print("No")
else:
    print("Yes")

Submission Info

Judge Result