Submission #6108656

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Source Code Expand

h,w=map(int,input().split())
ss=[list(input()) for i in range(h)]
f=True
s=[["."]*(w+2)]
s.extend(ss)
for i in range(1,h+1):
    s[i].insert(0,".")
    s[i].append(".")
s.append(["."]*(w+2))

for i in range(1,h+1):
    for j in range(1,w+1):
        if s[i][j]=="#":
            if s[i-1][j]!="#" and s[i+1][j]!="#" and s[i][j-1]!="#" and s[i][j+1]!="#":
                f=False
if f:
    print("Yes")
else:
    print("No")

Submission Info

Judge Result