#include <iostream>

using namespace std;

int t[400002] = {};

int main()
{
    int N;
    cin >> N;
    for(int i = 0; i < N; i++){
        int a, b;
        cin >> a >> b;
        t[a]++;
        t[b+1]--;
    }
    int result = 0;
    for(int i = 2; i <= 400000; i++){
        t[i] = t[i-1] + t[i];
        result = max(result, t[i]);
    }
    cout << result;
    return 0;
}