Keep In Touch Accepts: 22 Submissions: 280 Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 262144/131072 K (Java/Others) 问题描述 在Byteland一共有nn个城市,编号依次为11到nn,同时有mm条单向道路连接着这些城市
D. Powerful array time limit per test 5 seconds memory limit per test 256 megabytes input standard input output standard output An array of positive integers a1, a2, ..., an is gi