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  1. n = int(input())
  2. for i in range(n):
  3. 	s,t = input().split()
  4. 	s,t = int(s),int(t)
  5. 	for i in range(s):
  6. 		for j in range(t):
  7. 			if (i+j) % 2 == 0:
  8.  
  9. 				print("*",end="")
  10. 			else:
  11. 				print(".",end="")
  12. 	print("\n")
Success #stdin #stdout 0.04s 9544KB
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stdin
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3
3 1
4 4
2 5
stdout
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*.*

*.*..*.**.*..*.*

*.*.*.*.*.
https://ideone.com/9dwL8R
language:
Python 3 (python  3.9.5)
created:
5 years ago
visibility:
secret

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