u012870383的专栏

Ping pong uvaliveN (3N20000) ping pong players live along a west-east street(consider the street as a line segment). Each player has a unique skill rank. To improve their skill rank, they often

KingdomThere were n cities in an ancient kingdom. In the beginning of the kingdom, all cities were isolated. Kings ordered their subjects to construct roads connecting cities. A lot of roads wer

1335: 高桥和低桥Time Limit: 1 Sec  Memory Limit: 128 MBSubmit: 436  Solved: 86[Submit][Status][Web Board]Description有个脑筋急转弯是这样的：有距离很近的一高一低两座桥，两次洪水之后高桥被淹了两次，低桥却只被淹了一次，为什么？答案是：因为低桥太低了，第一次洪水退去之后

StarsTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 32307 Accepted: 14109DescriptionAstronomers often examine star maps where stars are represented by

Color the ballTime Limit: 9000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 9220    Accepted Submission(s): 4714Problem DescriptionN个气球排成一排，从左

Coder RatingsProblem code: RATINGSome of the more elite (and not-so-elite) coders around take part in a certain unnamed programming contest. In said contest, there are multiple t

MatrixTime Limit: 3000MS Memory Limit: 65536KTotal Submissions: 18387 Accepted: 6919DescriptionGiven an N*N matrix A, whose elements are either 0 or 1. A[i, j] me

A Simple Problem with IntegersTime Limit: 5000/1500 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3924    Accepted Submission(s): 1213Problem Descriptio