source_code: import java.awt.*;
  import java.awt.event.*;
  import java.awt.geom.*;
  import java.io.*;
  import java.math.*;
  import java.security.*;
  import java.text.*; 
  import java.util.*;
  import java.util.regex.*;
  /*
  	  br = new BufferedReader(new FileReader("input.txt"));
  	  pw = new PrintWriter(new BufferedWriter(new FileWriter("output.txt")));
  	  br = new BufferedReader(new InputStreamReader(System.in));
  	  pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
   */
  
  
  public class Main {
  	private static BufferedReader br;
  	private static StringTokenizer st;
  	private static PrintWriter pw;
  
  	public static void main(String[] args) throws Exception {
  		br = new BufferedReader(new FileReader("input.txt"));
  		pw = new PrintWriter(new BufferedWriter(new FileWriter("output.txt")));
  		//int qq = 1;
  		int qq = Integer.MAX_VALUE;
  		//int qq = readInt();
  		for(int casenum = 1; casenum <= qq; casenum++)	{
  			int r = readInt();
  			int c = readInt();
  			int n = readInt();
  			int[][] dist = new int[r][c];
  			for(int i = 0; i < r; i++) {
  				Arrays.fill(dist[i], 1 << 25);
  			}
  			LinkedList<State> q = new LinkedList<State>();
  			while(n-- > 0) {
  				q.add(new State(readInt()-1, readInt()-1));
  				dist[q.peekLast().x][q.peekLast().y] = 0;
  			}
  			int[] dx = new int[]{-1,1,0,0};
  			int[] dy = new int[]{0,0,-1,1};
  			State ret = q.peekLast();
  			while(!q.isEmpty()) {
  				State curr = q.removeFirst();
  				ret = curr;
  				for(int k = 0; k < dx.length; k++) {
  					int nx = curr.x + dx[k];
  					int ny = curr.y + dy[k];
  					if(nx >= 0 && nx < r && ny >= 0 && ny < c && dist[nx][ny] > 1 + dist[curr.x][curr.y]) {
  						dist[nx][ny] = 1 + dist[curr.x][curr.y];
  						q.add(new State(nx, ny));
  					}
  				}
  			}
  			pw.println(ret.x+1 + " " + (ret.y+1));
  		}
  		exitImmediately();
  	}
  
  	static class State {
  		public int x,y;
  
  		public State(int x, int y) {
  			super();
  			this.x = x;
  			this.y = y;
  		}
  		
  	}
  	
  	private static void exitImmediately() {
  		pw.close();
  		System.exit(0);
  	}
  
  	private static long readLong() throws IOException {
  		return Long.parseLong(nextToken());
  	}
  
  	private static double readDouble() throws IOException {
  		return Double.parseDouble(nextToken());
  	}
  
  	private static int readInt() throws IOException {
  		return Integer.parseInt(nextToken());
  	}
  
  	private static String nextLine() throws IOException  {
  		if(!br.ready()) {
  			exitImmediately();
  		}
  		st = null;
  		return br.readLine();
  	}
  
  	private static String nextToken() throws IOException  {
  		while(st == null || !st.hasMoreTokens())  {
  			if(!br.ready()) {
  				exitImmediately();
  			}
  			st = new StringTokenizer(br.readLine().trim());
  		}
  		return st.nextToken();
  	}
  }