Untitled

#include 
#include 
#include 
using namespace std;

int main() {
    int n;
    cin >> n;
    map mapa;
    for(int i = 0; i < n; i++) {
        int S, E;
        cin >> S >> E;
        mapa[S] += 1;
        mapa[E + 1] -= 1;
    }
    int zbir = 0;
    int customers = 0;
    for(auto x : mapa) {
        zbir += x.second;
        if(zbir > customers) {
            customers = zbir;
        }
    }
    cout << customers << endl;
    return 0;
}