1787: tower02

Memory Limit:128 MB Time Limit:1.000 S
Judge Style:Text Compare Creator:
Submit:73 Solved:66

Description

输出金字塔及它的倒影如,n=3



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Input

n,一个整数

Output

2n-1行图形

Sample Input Copy

3

Sample Output Copy

  @
 @@@
@@@@@
 @@@
  @

Source/Category