摘要：Recursive sequence Farmer John likes to play mathematics games with his N cows. Recently, they are attracted by recursive sequences. In each turn, the 阅读全文

摘要：233 Matrix In our daily life we often use 233 to express our feelings. Actually, we may say 2333, 23333, or 233333 ... in the same meaning. And here i 阅读全文

摘要：Best Solver The so-called best problem solver can easily solve this problem, with his/her childhood sweetheart. It is known that y=(5+26–√)1+2xy=(5+26 阅读全文

摘要：Sequence Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 1731 Accepted Submission(s): 656 Probl 阅读全文

摘要：Covering Covering Bob's school has a big playground, boys and girls always play games here after school. To protect boys and girls from getting hurt w 阅读全文

摘要：P1349 广义斐波那契数列 https://www.luogu.org/problemnew/show/P1349 题目描述 广义的斐波那契数列是指形如an=p*an-1+q*an-2的数列。今给定数列的两系数p和q，以及数列的最前两项a1和a2，另给出两个整数n和m，试求数列的第n项an除以m的 阅读全文