2017年3月13日
Prime Number CodeForces - 359C (属于是数论)
摘要： Simon has a prime number x and an array of non-negative integers a1, a2, ..., an.Simon loves fractions very much. Today he wrote out number on a piec... 阅读全文
posted @ 2017-03-13 21:38 xushukui 阅读(180) 评论(0) 推荐(0)
hdu 1030 Delta-wave
摘要： A triangle field is numbered with successive integers in the way shown on the picture below. The traveller needs to go from the cell with number M to ... 阅读全文
posted @ 2017-03-13 16:00 xushukui 阅读(141) 评论(0) 推荐(0)
cf 633B A trivial problem
摘要： Mr. Santa asks all the great programmers of the world to solve a trivial problem. He gives them an integer m and asks for the number of positive integ... 阅读全文
posted @ 2017-03-13 14:57 xushukui 阅读(206) 评论(0) 推荐(0)