2006 the random number of the Ming

Title Description Description

Obviously want to ask some students in school to do a questionnaire survey, in order to the objectivity of the experiment, he first used a computer to generate N 1 to 1000 random integer (n≤100), for the repeated numbers, only one, the rest of the same number is removed, the different numbers correspond to different student's number. Then the numbers from small to large sorting, in line with the order to find students to do the investigation. Please help clearly to complete the "go to Heavy" and "sort" work.

Enter a description Input Description

There are 2 rows, and the 1th behavior is 1 positive integers representing the number of N of the generated random number:

The 2nd line has n spaces separated by a positive integer, for the resulting random number

Output description Output Description

The 1th behavior is 1 positive integer m, which represents the number of different random numbers. The 2nd behavior m a positive integer separated by a space, for small

To a large sequence of different random numbers.

Sample input Sample Input

10

20 40 32 67 40 20 89 300 400 15

Sample output Sample Output

8

15 20 32 40 67 89 300 400

Data range and Tips Data Size & Hint

Exercises

Sort.

You can use a bucket, or you can use the selection, but I used a bucket (lazy).

var n,i,s,ans:longint;

A:array[0..1001]of Boolean;

Begin

READLN (n);

For I:=1 to N do

Begin

Read (s);

A[s]:=true;

End

For I:=1 to Ans:=ans+ord (A[i]);

Writeln (ANS);

For I:=1 to

If A[i] then write (i, ");

End.

2006 the random number of the Ming