#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a[1000],n,m,i;
	cin>>n>>m;
	for(i=1;i<=m;i++){
		cin>>a[i];
	}
	a[0]=n;
	for(i=0;i<m;i++){
		if(a[i]>a[i+1])
			swap(a[i],a[i+1]);
	}
	for(i=0;i<m+1;i++){
		cout<<a[i]<<" ";
	}	
	return 0;
}
/**************************************************************
	Problem: 1161
	User: houshanglin
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/