摘要：
It is Dandiya Night! A certain way how dandiya is played is described: There are N pairs of people playing at a time. Both the person in a pair are pl 阅读全文
摘要：
String Play Milo has a string S of length L. Tutu picks a random prefix and Mota picks a random suffix ofS. Now, Chotku is given a task of concatenati 阅读全文