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Complexity: O(1).
Author of the idea: Vladik.
Worked on the problem: Vladik.
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Complexity: O(n2).
Author of the idea: MikeMirzayanov.
Worked on the problem: fcspartakm.
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Complexity: O(n3 * m).
Author of the idea: altruist.
Worked on the problem: Vladik.
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Complexity: O(n).
Author of the idea: altruist.
Worked on the problem: altruist.
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Complexity: O(n).
Author of the idea: MikeMirzayanov.
Worked on the problem: altruist.
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Complexity: O(d * (N * M + K)), where d — alphabet power.
Author of the idea: Vladik.
Worked on the problem: Vladik.