//  Restaurant Customers

#include<bits/stdc++.h>

using namespace std;
using ll = long long;

int main() {
    int n; cin >> n;
    map<ll, int> m;
    for (int i{}; i < n; i++) {
        ll a, b;
        cin >> a >> b;
        m[a]++;
        m[b]--;
    }
    int max_count = 0;
    int count = 0;
    for (auto &[t, c]: m) {
        count += c;
        max_count = max(max_count, count);
    }
    cout << max_count << endl;
    return 0;
}