m42ping的专栏

B - LuckyNumbers (easy)TimeLimit:2000MS     MemoryLimit:262144KB     64bitIO Format:%I64d & %I64uSubmit StatusDescriptionPetya loves lucky numbers. Everybody knows that positiveintegers

D - BuyTicketsTime Limit:4000MS     MemoryLimit:65536KB     64bitIO Format:%I64d &%I64uSubmit StatusDescriptionRailway tickets were difficult to buy around the Lunar NewYear in China,

Permutationtimelimit per test1 secondmemorylimit per test256 megabytesinputstandard inputoutputstandard outputA permutation p isan ordered group of numbers p1,   p2,   ...,   pn,

Problem DescriptionC国的死对头A国这段时间正在进行军事演习，所以C国间谍头子Derek和他手下Tidy又开始忙乎了。A国在海岸线沿直线布置了N个工兵营地,Derek和Tidy的任务就是要监视这些工兵营地的活动情况。由于采取了某种先进的监测手段，所以每个工兵营地的人数C国都掌握的一清二楚,每个工兵营地的人数都有可能发生变动，可能增加或减少若干人手,但这些都逃不过C国的监视。

FibonacciTime Limit: 1000MSMemory Limit: 65536KTotal Submissions: 9845Accepted: 7019DescriptionIn the Fibonacci integersequence, F0 =0, F1 = 1,and Fn = Fn −1 + Fn −2 for n ≥2