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  1. n=int(input())
  2. for i in range(0,n):
  3. for j in range(1,n+1):
  4. print(" ",end="")
  5. print("@")
  6. for i in range(1,n+1):
  7. for j in range(i,n+1):
  8. print(" ",end="")
  9. for j in range(0,2*i-1):
  10. print("@",end="")
  11. print()
  12. for i in range(n-1,0,-1):
  13. for j in range(0,n-i+1):
  14. print(" ",end="")
  15. for j in range(0,2*i-1):
  16. print("@",end="")
  17. print()
Success #stdin #stdout 0.01s 27704KB
stdin
5
stdout
     @
     @
     @
     @
     @
     @
    @@@
   @@@@@
  @@@@@@@
 @@@@@@@@@
  @@@@@@@
   @@@@@
    @@@
     @