摘要：
Shizuka's LetterTime Limit:2 Seconds Memory Limit:65536 KBNobita receives a letter from Shizuka. For the sake of security, the letter's contentTis pro... 阅读全文
摘要：
Tree of ThreeTime Limit:2 Seconds Memory Limit:65536 KBNow we have a tree and some queries to deal with. Every node in the tree has a value on it. For... 阅读全文
摘要：
转：http://blog.csdn.net/sunkun2013/article/details/11822927 1 import java.util.*; 2 import java.math.BigInteger; 3 import java.util.Collections; 4 impo... 阅读全文