source_code: import java.io.BufferedReader;
  import java.io.FileNotFoundException;
  import java.io.FileReader;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.PrintWriter;
  import java.util.Arrays;
  import java.util.LinkedList;
  import java.util.Queue;
  import java.util.StringTokenizer;
  
  public class Main {
  	static int[] di = {-1,0,1,0};
  	static int[] dj = {0,1,0,-1};
  	public static void main(String[] args) throws IOException 
  	{
  		Scanner sc = new Scanner("input.txt");
  		PrintWriter out = new PrintWriter("output.txt");
  		Queue<Pair> q = new LinkedList<Pair>();
  		int n = sc.nextInt(),m = sc.nextInt() , k = sc.nextInt();
  		boolean [][] vis = new boolean[n][m];
  		while(k-->0)
  			q.add(new Pair(sc.nextInt()-1,sc.nextInt()-1));
  	
  		int ansX = 1 , ansY = 1;
  		
  		while(!q.isEmpty())
  		{
  			Pair cur = q.poll();
  			if(vis[cur.i][cur.j])continue;
  			ansX = cur.i ; ansY = cur.j;
  			vis[cur.i][cur.j] = true;
  			for (int i = 0; i < di.length; i++) {
  				int ni = cur.i + di[i] , nj = cur.j + dj[i];
  				if(ni>=0 && ni<n && nj>=0 && nj<m && !vis[ni][nj])
  					q.add(new Pair(ni,nj));
  			}
  		}
  		
  		out.append(++ansX+" "+ ++ansY);
  		out.flush();
  		
  	}
  	static class Pair
  	{
  		int i,j;
  		public Pair(int a,int b) {
  			i = a; j = b;
  		}
  	}
  	
  	static class Scanner 
  	{
  		StringTokenizer st;
  		BufferedReader br;
  		public Scanner(InputStream s){	br = new BufferedReader(new InputStreamReader(s));}
  		public Scanner(String s) throws FileNotFoundException {
  			br = new BufferedReader(new FileReader(s));
  		}
  		public String next() throws IOException 
  		{
  			while (st == null || !st.hasMoreTokens()) 
  				st = new StringTokenizer(br.readLine());
  			return st.nextToken();
  		}
  		public int nextInt() throws IOException {return Integer.parseInt(next());}
  		public String nextLine() throws IOException {return br.readLine();}		
  		public long nextLong() throws IOException {return Long.parseLong(next());}		
  		public double nextDouble() throws IOException {return Double.parseDouble(next());}	
  		public boolean ready() throws IOException {return br.ready();}
  	}
  	
  }