#include<bits/stdc++.h>
using namespace std;
int main()
{
	int l,n,x,a,b,maxx=0,minn=0;
	cin>>l>>n;
	for (int i=1;i<=n;i++)
	{
		cin>>x;
		a=min(x,l+1-x);
		b=max(x,l+1-x);
		minn=max(minn,a);
		maxx=max(maxx,b);
	}
	cout<<minn<<' '<<maxx;
	return 0;
}

就这么少