#include<bits/stdc++.h>
using namespace std;
int main(){
	int n; cin >> n;
	vector<pair<int,int>> event;
	for (int i=0; i<n; i++){
		int l, r; cin >> l >> r;
		l *= 2;
		r *= 2;
		r -= 1;
		event.push_back(pair(l, +1));
		event.push_back(pair(r, -1));
	}
	sort(event.begin(), event.end());

	int ans = 0;
	int tmp = 0;
	for (auto [c, d]: event){
		tmp += d;
		ans = max(ans, tmp);
	}
	cout << ans-1 << '\n';
}