小学生

2017年上海金马五校程序设计竞赛 Problem C : Count the NumberProblem C : Count the NumberTime Limit: 3 sDescriptionGiven n numbers, your task is to insert ‘+’ or ‘-’ in front of each number to construct expressions.

KolakoskiTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 524288/524288 K (Java/Others)  Problem DescriptionThis is Kolakosiki sequence: 1,2,2,1,1,2,1,2,2,1,2,2,1,1,2,1,1,2,2,1……. This sequence c

RXD and mathTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 524288/524288 K (Java/Others)  Problem DescriptionRXD is a good mathematician. One day he wants to calculate: ∑i=1nkμ2(i)×⌊nki−−−√⌋