#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  while (1) {
    vector<pair<int, int> > v;
    cin >> n;
    if (n == 0) break;
    for (int i = 0; i < n; i++) {
      cin >> v[i].second >> v[i].first;
    }
    sort(v.begin(), v.end());
    int ans = 0;
    int judge = 0;
    for (int i = 0; i < n; i++) {
      ans += v[i].second;
      if (ans > v[i].first) {
        judge = 1;
        break;
      }
    }
    if (judge == 0)
      cout << "Yes" << endl;
    else
      cout << "No" << endl;
  }
}
