摘要：
A Simple Problem with Integers Time Limit: 5000MS Memory Limit: 131072K Total Submissions: 163977 Accepted: 50540 Case Time Limit: 2000MS Description 阅读全文
摘要：
Buy Tickets Time Limit: 4000MS Memory Limit: 65536K Total Submissions: 26443 Accepted: 12639 Description Railway tickets were difficult to buy around 阅读全文