1001 Puzzled Elena
1002 Antonidas
1003 Typewriter
1004 Count the Grid
1005 Code Formatting
1006 There was a kingdom
1008 An easy problem
1010 A Sweet Journey
1011 Can you find it
2015 ACM/ICPC Asia Regional Shanghai Online
原文：http://www.cnblogs.com/Aguin/p/4841317.html