雲泥有別 尘亦生辉

Buy Tickets Time Limit: 4000MS   Memory Limit: 65536K Total Submissions: 20782   Accepted: 10237 Description Railway tickets were difficult to buy around the Lunar New

Oulipo Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 42886   Accepted: 17234 Description The French author Georges Perec (1936–1982) once wrote a book, L

Network of Schools Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 19362   Accepted: 7616 Description A number of schools are connected to a computer netwo

Palindrome Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 63833   Accepted: 22254 Description A palindrome is a symmetrical string, that is, a string read

Brackets Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 8027   Accepted: 4264 Description We give the following inductive definition of a “regular brack

Prime Distance Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 18909   Accepted: 5064 Description The branch of mathematics called number theory is about p

Palindrome Time Limit: 15000MS   Memory Limit: 65536K Total Submissions: 9838   Accepted: 3724 Description Andy the smart computer science student was attending an algo

Cows Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 19652   Accepted: 6690 Description Farmer John's cows have discovered that the clover growing along th

Who Gets the Most Candies? Time Limit: 5000MS   Memory Limit: 131072K Total Submissions: 14886   Accepted: 4687 Case Time Limit: 2000MS Description N children are

Open-air shopping malls Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Description The city of M is a famous shopping city and its open-air shopping mal