摘要：
Boring counting Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 98304/98304 K (Java/Others) Problem Description In this problem we consider a roo 阅读全文
摘要：
D. Tree Requests time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Roman planted a tree co 阅读全文