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6656 Watching the KangarooDay by day number of Kangaroos is decreasing just liketiger, whale or lions. So I decided to make them a sanctuarywhere they... 阅读全文
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GCD XORGiven an integer N, nd how many pairs (A; B) are there such that: gcd(A; B) = A xor B where1 B A N.Here gcd(A; B) means the greatest com... 阅读全文
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End up with More TeamsTime Limit:3000MSMemory Limit:Unknown64bit IO Format:%lld & %llu[Submit] [Go Back] [Status]DescriptionIIUPC2006Problem E: End up... 阅读全文