P1059 random number "Go reorder"

Title 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.

Input/output format

Input format:

The input has 2 rows, and the 1th behavior is 1 positive integers, indicating the number of random numbers generated:

n the 2nd line has n spaces separated by a positive integer, which is the resulting random number.

Output format:

The output is also 2 lines, and the 1th behavior is 1 positive integer m, which represents the number of different random numbers. The 2nd behavior is a positive integer separated by a space, which is a different random number from small to large sequence.

Input and Output sample input sample #: Copy

    20 40 32 67 40 20 89 300 400 15

Output Example # #: Replication

  8  15 20 32 40 67 89 300 400

Description

NOIP 2006 Universal group first question

"Code":

#include <bits/stdc++.h>using namespacestd;intMain () {intn,a[1005]; Set<int> s;//self-with sort + de-weightscanf"%d",&N);  for(intI=0; i<n;i++) {scanf ("%d",&A[i]);    S.insert (A[i]); } cout<<s.size () <<Endl;  for(Set<int>::iterator it = S.begin (); It!=s.end (); it++)//Note Traversal uses iterators{cout<<*it<<" "; } cout<<Endl; return 0;}/*1020 (+)*/

View Code

P1059 random number "Go reorder"