摘要： 数论计算中经常出现的一种运算就是求一个数的幂ab对另外一个数n个模的运算，即计算: ab mod n (a,b,n是正整数) 由于计算机只能表示有限位的整数，所以编程时模取幂的运算要注意值的大小范围，当ab的值超过整数范围时,mod运算便无法进行。 如何解决这个问题，我们引出一个能计算ab mod 阅读全文

摘要： 描述 In the Fibonacci integer sequence, F0 = 0, F1 = 1, and Fn = Fn − 1 + Fn − 2 for n ≥ 2. For example, the first ten terms of the Fibonacci sequence a 阅读全文

摘要： 首先储备知识：数的快速幂 参考资料：http://blog.csdn.net/y990041769/article/details/22311889 快速幂取模 用法：用于求解 a 的 b 次方，而b是一个非常大的数，用O（n）的复杂度会超时。 那么就需要这个算法，注意它不但可以对数求次幂，而且可用 阅读全文

摘要： Problem Description Professor Brute is not good at algorithm design. Once he was asked to solve a path finding problem. He worked on it for several da 阅读全文

摘要： Description Before bridges were common, ferries were used to transport cars across rivers. River ferries, unlike their larger cousins, run on a guide 阅读全文

摘要： Description Input is the matrix A of N by N non-negative integers. A distance between two elements Aij and Apq is defined as |i − p| + |j − q|. Your p 阅读全文

摘要： Description Given three strings, you are to determine whether the third string can be formed by combining the characters in the first two strings. The 阅读全文

摘要： Description Farmer John's cows would like to jump over the moon, just like the cows in their favorite nursery rhyme. Unfortunately, cows can not jump. 阅读全文

摘要： Description "Fat and docile, big and dumb, they look so stupid, they aren't much fun..." - Cows with Guns by Dana Lyons The cows want to prove to the 阅读全文

摘要： Description Some of Farmer John's N cows (1 ≤ N ≤ 80,000) are having a bad hair day! Since each cow is self-conscious about her messy hairstyle, FJ wa 阅读全文