문제
풀이
#include <iostream>
#include <vector>
using namespace std;
bool solve(void) {
int n; cin >> n;
int x, s; cin >> x >> s;
vector<int> c(n), p(n);
for (int i=0; i<n; i++) cin >> c[i] >> p[i];
for (int i=0; i<n; i++) {
if (x < c[i]) continue;
if (p[i] > s) return true;
}
return false;
}
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout << (solve() ? "YES" : "NO");
return 0;
}