hdu 1425(hash)

/*
*  hash
*/

#include <cstdio>
#include <climits>
#include <cstring>
#include <iostream>

using namespace std;

const int M = 1000001;

bool hash[M];

void init() {
    for (int i=0; i<M; ++i) hash[i] = false;
    return ; 
}

int main() {
    int n, m, maxm;
    while (scanf("%d%d", &n, &m) != EOF) {
        int p;
        init();
        maxm = INT_MIN;
        for (int i=0; i<n; ++i) {
            scanf ("%d", &p);
            p += 500000;
            hash[p] = true;
            if (p > maxm) maxm = p;
        }
        printf ("%d", maxm-500000);
        if (--m) {
            for (int i=maxm-1; i>=0; --i) {
                if (hash[i]) {
                    printf (" %d", i-500000);
                    --m;
                    if (!m) break;
                 }
            }
        }
        puts("");
    }
    return 0;
}