2021-01-17 22:20:32 +01:00
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Write a Thrax grammar which replaces all 0s to 1s and 1s to 0s (other
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digits should not be changed).
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You can assume that only string composed of digits are given on the
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input.
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2021-01-17 22:31:22 +01:00
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POINTS: 2
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2021-01-17 22:20:32 +01:00
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DEADLINE: 2021-02-03 23:00
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