P1008 [NOIP 1998 Junior] Triple Hit

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Partition the $9$ numbers $1, 2, \ldots , 9$ into $3$ groups to form $3$ three-digit numbers, such that these $3$ three-digit numbers are in the ratio $1 : 2 : 3$. Find all triplets of three-digit numbers that satisfy this condition.

None.

Several lines, each containing 3 numbers. Sort the lines in ascending order by the first number in each line.

NOIP 1998 Junior Problem 1. Translated by ChatGPT 5