#include <iostream>
#include <algorithm>
#include <vector>
#include <map>
using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);
    int n;
    cin >> n;
    map<int, int> c;
    vector<int> v(n + 1);
    // map<key, value> c ,key: type, value: type
    // c["stefan"] = 1
    // cout << c[ime], ime = "stefan"
    for(int i = 0; i < n; ++i) {
        int a, b;
        cin >> a >> b;
        ++c[a];
        --c[b + 1];
    }
    int ret = 0, pref_sum = 0;
    for(map<int, int>::iterator it = c.begin(); it != c.end(); ++it) {
        pref_sum += it->second;
        ret = max(ret, pref_sum);
    }
    cout << ret << endl;

    return 0;