/// Craciun Catalin
///  Greedy
///   www.infoarena.ro/problema/shop
#include <fstream>
using namespace std;
ifstream f("shop.in");
ofstream g("shop.out");

short int n;
short int c;
long l;
long A[31],B[31];

void sortare(){

    long aux;

    for (short int i=1;i<=n;i++)
        for (short int j=i+1;j<=n;j++)
            if (A[i]>A[j]){
                aux=A[i];
                A[i]=A[j];
                A[j]=aux;

                aux=B[i];
                B[i]=B[j];
                B[j]=aux;
            }
}

int main(){

    f>>n>>c>>l;
    for (i=1;i<=n;i++)
        f>>A[i]>>B[i];
    f.close();

    sortare();

    return 0;
}