#include <iostream>

using namespace std;
const int N=1e6+10;
int a[N];
int main()
{
    int n;
    scanf("%d",&n);
    for(int i=1;i<=n;++i){
        int x,y;
        scanf("%d%d",&x,&y);
        a[x]++; a[y]--;
    }
    int ans=0;
    for(int i=0;i<=1000000;++i){
        a[i]+=a[i-1];
        ans=max(ans,a[i]);
    }
    printf("%d",ans);
    return 0;
}