How to do well in bitmask problems?

Правка en1, от Wax, 2025-05-29 17:52:46

I am suffering from bitwise trauma!I can solve same rating other problems but on same rating bitmask problem,I got stuck in it,....

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en2 Английский Wax 2025-05-29 17:53:19 2 Tiny change: 'se trauma!I can solv' -> 'se trauma!\nI can solv'
en1 Английский Wax 2025-05-29 17:52:46 166 Initial revision (published)