不是很懂你们二次元

超级楼梯Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 47960    Accepted Submission(s): 24529Problem Description有一楼梯共M级，刚开始时你在第

DescriptionSometimes some mathematical results are hard to believe. One of the common problems is the birthday paradox. Suppose you are in a party where there are 23 people including you. What is

DescriptionThere are n distinct points in the plane, given by their integer coordinates. Find the number of parallelograms whose vertices lie on these points. In other words, find the number of 4-

小火山的计算能力Time Limit: 1 Sec  Memory Limit: 128 MBSubmit: 473  Solved: 124SubmitStatusWeb BoardDescription别人说小火山的计算能力不行，小火山很生气，于是他想证明自己，现在有一个表达式，他想计算出来。Input首先是一个t（1Output

Dima and GuardsTime Limit:1000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64uSubmit Status Practice CodeForces 366ADescriptionNothing has changed since the last

Bear and Reverse RadewooshTime Limit:2000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64uSubmit Status Practice CodeForces 658ADescriptionLimak and Radewoosh are

Ohana Cleans UpTime Limit:2000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64uSubmit Status Practice CodeForces 554BDescriptionOhana Matsumae is trying to clean a

A - Co-prime ArrayTime Limit:1000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64uSubmit Status Practice CodeForces 660ADescriptionYou are given an array of n elem

不是匹配时间限制：1000 ms  |  内存限制：65535 KB描述 有N个人,N个活动， 每个人只会对2个或者3个活动感兴趣， 每个活动也只有两个人或者两个活动对它兴趣，每个人参加一个 感兴趣的活动需要一天 ，且当天该活动被参加时，其他的人不能参加 如果每个人都参加完自己有兴趣的活动，应当怎样安排使得所用总天数时间最短2输入

A -- AlarmTime Limit：1s Memory Limit：128MByteSubmissions：201Solved：70DESCRIPTIONGiven a number sequence [3,7,22,45,116,...][3,7,22,45,116,...]. Please tell me the kk-th number.

985的买饮料难题Time Limit: 1 Sec  Memory Limit: 128 MBSubmit: 233  Solved: 123SubmitStatusWeb BoardDescription天气太热了，985制定了对未来的规划即第i天喝a[i]瓶饮料。为了节约开支，他打听到了第i天每瓶饮料的价格p[i]。为了不让自己的规划落空，他想知道这n天他

第几天？Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 124314    Accepted Submission(s): 45109Problem Description给定一个日期，输出这个日期是

18岁生日Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 28998    Accepted Submission(s): 9453Problem DescriptionGardon的18岁生日就要到了，他当

985的数字难题Time Limit: 1 Sec  Memory Limit: 128 MBSubmit: 259  Solved: 88SubmitStatusWeb BoardDescription985有n个数，已知每次操作可以将其中不相同的两个数一个加一、一个减一，操作次数不限。问他最多可以得到多少个相同的数。Input第一行输

母牛的故事Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 68100    Accepted Submission(s): 34007Problem Description有一头母牛，它每年年初生一头

Bungee JumpingTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1126    Accepted Submission(s): 476Problem DescriptionOnce again,