source_code: import java.awt.*;
  import java.io.*;
  import java.util.*;
  public class Abc {
      public static void main(String[] args) throws IOException {
  //        FastReader sc = new FastReader();
          Scanner sc=new Scanner(new FileReader("input.txt"));
          PrintWriter out=new PrintWriter(new File("output.txt"));
          int n=sc.nextInt(),m=sc.nextInt(),k=sc.nextInt();
          boolean vis[][]=new boolean[n][m];
          LinkedList<Integer> q=new LinkedList<>();
          for (int i=0;i<k;i++){
              int x=sc.nextInt()-1,y=sc.nextInt()-1;
              vis[x][y]=true;
              q.add(x);q.add(y);
          }
          int lastx=-1,lasty=-1;
          int dirX[]={1,-1,0,0},dirY[]={0,0,1,-1};
          while (!q.isEmpty()){
              int x=q.removeFirst();
              int y=q.removeFirst();
              lastx=x;lasty=y;
              for (int i=0;i<4;i++){
                  int newx=x+dirX[i],newy=y+dirY[i];
                  if (newx>=0 && newx<n && newy>=0 && newy<m && !vis[newx][newy]){
                      vis[newx][newy]=true;
                      q.add(newx);q.add(newy);
                  }
              }
          }
          out.println((lastx+1)+" "+(lasty+1));
          out.close();
      }
  
      static class FastReader {
          BufferedReader br;
          StringTokenizer st;
  
          public FastReader() {
              br = new BufferedReader(new
                      InputStreamReader(System.in));
          }
  
          String next() {
              while (st == null || !st.hasMoreElements()) {
                  try {
                      st = new StringTokenizer(br.readLine());
                  } catch (IOException e) {
                      e.printStackTrace();
                  }
              }
              return st.nextToken();
          }
  
          int nextInt() {
              return Integer.parseInt(next());
          }
  
          long nextLong() {
              return Long.parseLong(next());
          }
  
          double nextDouble() {
              return Double.parseDouble(next());
          }
  
          String nextLine() {
              String str = "";
              try {
                  str = br.readLine();
              } catch (IOException e) {
                  e.printStackTrace();
              }
              return str;
          }
      }
  }