Problem Y: 字母三角

Problem Y: 字母三角

[Creator : ]
Time Limit : 1.000 sec  Memory Limit : 128 MiB

SubmitProblemListSolved: 32Submit Num: 41StatisticsShowOff!

Description

Sample Input Copy 

11

Sample Output Copy 

A
BC
DEF
GHIJ
KLMNO
PQRSTU
VWXYZAB
CDEFGHIJ
KLMNOPQRS
TUVWXYZABC
DEFGHIJKLMN
Submit