Baekjoon #1689

import java.util.*;
import java.io.*;

public class Main{
	public static void main(String[] args) {
        FastReader rd = new FastReader();

        int N = rd.nextInt();

        PriorityQueue<int[]> pq1 = new PriorityQueue<>((n1, n2) -> {
            if (n1[0] == n2[0]) return n1[1] - n2[1];
            return n1[0] - n2[0];
        });    

		for (int i = 0; i < N; i++) {
			pq1.add(new int[]{rd.nextInt(), rd.nextInt()});
		}

        PriorityQueue<Integer> pq2 = new PriorityQueue<>();
		pq2.add(pq1.poll()[1]);
		int ans = 1;
		while (!pq1.isEmpty()) {
			int[] curr = pq1.poll();

			if (pq2.peek() <= curr[0]) pq2.poll();
			pq2.add(curr[1]);

			ans = Math.max(ans, pq2.size());
		}

        System.out.println(ans);
	}

    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;
        }
    }
}