摘要： Description There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. From 阅读全文

摘要： Time limit : 2sec / Memory limit : 1024MB Score : 700 points Problem Statement There is an integer sequence of length 2N: A0,A1,…,A2N−1. (Note that th 阅读全文

摘要： A - Multiple of 2 and N Time Limit: 2 sec / Memory Limit: 1024 MB Score : 100100 points Problem Statement You are given a positive integer NN. Find th 阅读全文

摘要： A - Rated for Me Time Limit: 2 sec / Memory Limit: 1024 MB Score : 100100 points Problem Statement A programming competition site AtCode regularly hol 阅读全文

摘要： A - F Time Limit: 2 sec / Memory Limit: 1024 MB Score : 100100 points Problem Statement You are given two integers aa and bb. Determine if a+b=15a+b=1 阅读全文

摘要： Description Given a n × n matrix A and a positive integer k, find the sum S = A + A2 + A3 + … + Ak. Given a n × n matrix A and a positive integer k, f 阅读全文

摘要： Description Panda has received an assignment of painting a line of blocks. Since Panda is such an intelligent boy, he starts to think of a math proble 阅读全文

摘要： 如果用递归方式的话时很慢的，需要压栈，不停的调用很费时间，完全不建议。 代码： 也可以用循环，会快些，O（n)的时间，效率还是太低。 代码： 斐波那契数列有通项公式，Fn = 1/根5 * (((1 + 根5) / 2)^n - ((1 - 根5) / 2)^n)，但是有无理数，无法简单的求得取模后 阅读全文

摘要： Description Once upon a time, there was a traveler. He plans to travel using stagecoaches (horse wagons). His starting point and destination are fixed 阅读全文

摘要： Time Limit: 2 sec / Memory Limit: 1024 MB Score : 11001100 points Problem Statement Let us consider a grid of squares with 109109 rows and NN columns. 阅读全文