#include<iostream>
using namespace std;

int main()
{
	int X, Y, Z,count=0;

	cin >> X >> Y >> Z;

	while (Y * Z > X * count)
	{
		count++;
	}

	cout << count-1 << endl;

	cin >> X;

	return 0;
}
#include <bits/stdc++.h>
using namespace std;
#define _GLIBCXX_DEBUG
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
#define ll long long
int main(){
    int n, s, d;
    cin >> n >> s >> d;
    vector<vector<int>> M(n, vector<int>(2));
    rep(i, n) cin >> M[i][0] >> M[i][1];
    rep(i, n){
        if (M[i][0] < s && M[i][1] > d){
            cout << "Yes" << endl;
            return 0;
        }
    }
    cout << "No" << endl;
    return 0;
}