source_code: import java.io.BufferedReader;
  import java.io.FileNotFoundException;
  import java.io.FileReader;
  import java.io.FileWriter;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.PrintWriter;
  import java.util.LinkedList;
  import java.util.Queue;
  import java.util.StringTokenizer;
  
  public class A {
  
  	static final int[] dx = {0, 0, -1, 1};
  	static final int[] dy = {-1, 1, 0, 0};
  	
  	public static void main(String[] args) throws IOException {
  
  		Scanner sc = new Scanner("input.txt");
  		PrintWriter out = new PrintWriter(new FileWriter("output.txt"));
  //		Scanner sc = new Scanner(System.in);
  //		PrintWriter out = new PrintWriter(System.out);
  
  		int N = sc.nextInt(), M = sc.nextInt();
  		int[][] dist = new int[N][M];
  		Queue<Integer> q = new LinkedList<>();
  		int K = sc.nextInt();
  		while(K-->0)
  		{
  			int x = sc.nextInt() - 1, y = sc.nextInt() - 1;
  			q.add(x * M + y);
  			dist[x][y] = 1;
  		}
  		
  		int max = 0, ansX = -1, ansY = -1;
  		while(!q.isEmpty())
  		{
  			int u = q.remove(), x = u / M, y = u % M;
  			if(dist[x][y] > max) 
  				max = dist[ansX = x][ansY = y];
  			for(int k = 0; k < 4; ++k)
  			{
  				int nx = x + dx[k], ny = y + dy[k];
  				if(nx >= 0 && ny >= 0 && nx < N && ny < M && dist[nx][ny] == 0)
  				{
  					dist[nx][ny] = dist[x][y] + 1;
  					q.add(nx * M + ny);
  				}
  				
  			}
  		}
  		out.printf("%d %d\n", ansX + 1, ansY + 1);
  		out.close();
  	}
  	
  
  	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 long nextLong() throws IOException {return Long.parseLong(next());}
  
  		public String nextLine() throws IOException {return br.readLine();}
  
  		public double nextDouble() throws IOException { return Double.parseDouble(next()); }
  
  		public boolean ready() throws IOException {return br.ready();} 
  	}
  }