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  1. for a in range(0, 4):
  2. for b in range(0, 3):
  3. print("a", a, "b", b)
Success #stdin #stdout 0.02s 9136KB
stdin
Standard input is empty
stdout
a 0 b 0
a 0 b 1
a 0 b 2
a 1 b 0
a 1 b 1
a 1 b 2
a 2 b 0
a 2 b 1
a 2 b 2
a 3 b 0
a 3 b 1
a 3 b 2