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  1. num = 24
  2. seq = range(1, num+1)
  3. i, size = 0, 1
  4. while i < num:
  5. print(*seq[i:i+size])
  6. i += size
  7. size += 1
Success #stdin #stdout 0.03s 9568KB
stdin
Standard input is empty
stdout
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
22 23 24