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  1. n = int(input())
  2.  
  3. for i in range(1, n + 1):
  4. print(chr(64 + i) * i)
Success #stdin #stdout 0.02s 9168KB
stdin
10
stdout
A
BB
CCC
DDDD
EEEEE
FFFFFF
GGGGGGG
HHHHHHHH
IIIIIIIII
JJJJJJJJJJ