当n输入10时,结果如下:
Merry Christmas!
Merry Christmas!
Merry Christmas!
Merry Christmas!
Merry Christmas!
Merry Christmas!
Merry Christmas!
Merry Christmas!
Merry Christmas!
Merry Christmas!
10
Merry Christmas! Merry Christmas! Merry Christmas! Merry Christmas! Merry Christmas! Merry Christmas! Merry Christmas! Merry Christmas! Merry Christmas! Merry Christmas!