Submission #6436143

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Source Code Expand

import sys

#+++++
		
def check_near_black(c,i,j):
	dd=[[1,0],[0,1],[-1,0],[0,-1]]
	for dx,dy in dd:
		if c[i+dy][j+dx] == '#':
			return True
	return False

def main():
	h,w = map(int, input().split())
	camp=[]
	ww=list('.'*(w+2))
	camp.append(ww)
	for i in range(h):
		s = '.'+input()+'.'
		camp.append(list(s))
	camp.append(ww)
	
	for i in range(1,1+h):
		for j in range(1,1+w):
			#print(camp[i][j])
			if camp[i][j]=='#' and not check_near_black(camp,i,j):
				return 'No'
				
				
	return 'Yes'
		
	
	
	
#+++++

if __name__ == "__main__":
	if sys.platform =='ios':
		sys.stdin=open('inputFile.txt')
	else:
		input = sys.stdin.readline
			
	ret = main()
	if ret is not None:
		print(ret)

Submission Info

Judge Result