输入描述:

For each case, the first line of the input contains an integer number N representing the quantity of numbers in this array(1≤N≤1000). Next N lines contain N integer numbers(one number per each line) of the original array.

输出描述:

For each case ,outtput file should contain at most N numbers sorted in ascending order. Every number in the output file should occur only once.

6
8 8 7 3 7 7

3 7 8