摘要：
Snowflake Snow SnowflakesTime Limit: 4000MSMemory Limit: 65536KTotal Submissions: 27598Accepted: 7312DescriptionYou may have heard that no two snowflakes are alike. Your task is to write a program to ... 阅读全文
摘要：
Dual PalindromesMario Cruz (Colombia) & Hugo Rickeboer (Argentina)A number that reads the same from right to left as when read from left to right is called a palindrome. The number 12321 is a palindro... 阅读全文