#include <iostream>
#include <fstream>
#include <string>

using namespace std;

class Film
{
public:
    int start, finish;
};


int main()
{
ifstream in;
ofstream out;
int i=0;
long long int licznik=0;
int amount;
in.open ("in.txt", ios::in);
out.open ("out.txt", ios::out);
in>>amount;
cout<<amount;
Film ff[amount];
if (in.is_open())
{
    while(i < amount)
    {
       in>>ff[i].start;
       in>>ff[i].finish;
    }
}
in.close();
out.close();
return 0;

}