#define _CRT_SECURE_NO_WARNINGS
#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
#include <bits/stdc++.h>
using namespace std;
int main()
{
    int n, k;
    scanf("%d%d", &n, &k);
    set<int> S;
    for (int i = 0, x; i < n; i++)
        scanf("%d", &x), S.insert(x);
    int cur = 0;
    for (int i = 0; i < k; i++)
    {
        auto ite = S.upper_bound(cur);
        if (ite != S.end())
        {
            printf("%d\n", *ite - cur);
            cur = *ite;
        }
        else
            printf("%d\n", 0);
    }
    return 0;
}