Problem F: 输出大写字母序列

Problem F: 输出大写字母序列

Time Limit: 1 Sec  Memory Limit: 128 MB
Submit: 2587  Solved: 1416
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Description

输入正整数N（N≤26），输出第N个大写字母开始的所有26个大写字母序列 

Sample Input Copy 

26

Sample Output Copy 

ZABCDEFGHIJKLMNOPQRSTUVWXY
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