source_code: import java.io.*;
  import java.util.*;
  
  public class C {
  
  	void run() throws IOException {
  		int n = ni(), m = ni(), k = ni(), q = n * m, h = 0, t = 0, inf = 123456;
  		int[] x = new int[q], y = new int[q];
  		int[][] d = new int[n][m];
  		for (int i = 0; i < n; i++)
  			for (int j = 0; j < m; j++)
  				d[i][j] = inf;
  		for (int i = 0; i < k; i++) {
  			int u = ni() - 1, v = ni() - 1;
  			d[u][v] = 0;
  			x[t] = u;
  			y[t] = v;
  			t++;
  		}
  		if (k < q)
  			while (t != h) {
  				int u = x[h], v = y[h];
  				int l = d[u][v] + 1;
  				h++;
  				if (u > 0 && d[u - 1][v] > l) {
  					d[u - 1][v] = l;
  					x[t] = u - 1;
  					y[t] = v;
  					t++;
  				}
  				if (u < n - 1 && d[u + 1][v] > l) {
  					d[u + 1][v] = l;
  					x[t] = u + 1;
  					y[t] = v;
  					t++;
  				}
  				if (v > 0 && d[u][v - 1] > l) {
  					d[u][v - 1] = l;
  					x[t] = u;
  					y[t] = v - 1;
  					t++;
  				}
  				if (v < m - 1 && d[u][v + 1] > l) {
  					d[u][v + 1] = l;
  					x[t] = u;
  					y[t] = v + 1;
  					t++;
  				}
  			}
  		int max = 0, tx = 0, ty = 0;
  
  		for (int i = 0; i < n; i++)
  			for (int j = 0; j < m; j++)
  				if (d[i][j] > max) {
  					max = d[i][j];
  					tx = i;
  					ty = j;
  
  				}
  		pw.print(1 + tx + " " + (1 + ty));
  	}
  
  	String next() throws IOException {
  		while (st == null || !st.hasMoreTokens())
  			st = new StringTokenizer(br.readLine());
  		return st.nextToken();
  	}
  
  	int ni() throws IOException {
  		return Integer.parseInt(next());
  	}
  
  	String nl() throws IOException {
  		return br.readLine();
  	}
  
  	PrintWriter pw;
  	BufferedReader br;
  	StringTokenizer st;
  
  	public static void main(String[] args) throws IOException {
  		BufferedReader _br = new BufferedReader(new FileReader(new File("input.txt")));
  		PrintWriter _pw = new PrintWriter(new FileWriter(new File("output.txt")));
  		new C(_br, _pw).run();
  		_br.close();
  		_pw.close();
  	}
  
  	public C(BufferedReader _br, PrintWriter _pw) {
  		br = _br;
  		pw = _pw;
  	}
  }
  