#include <bits/stdc++.h>
using namespace std;
struct ISLAND {
  int treasure;
  int bridge;
};
int main() {
  int n;
  while (cin >> n) {
    if (n == 0) break;
    vector<ISLAND> island;
    ISLAND temp;
    for (int i = 0; i < n; i++) {
      cin >> temp.treasure >> temp.bridge;
      island.push_back(temp);
    }
    for (int i = 0; i < n - 1; i++) {
      for (int j = n - 1; j > i; j--) {
        if (island[j].bridge < island[j - 1].bridge) {
          ISLAND temp;
          temp = island[j];
          island[j] = island[j - 1];
          island[j - 1] = temp;
        }
      }
    }
    int burden = 0;
    bool flag = true;
    for (int i = 0; i < n; i++) {
      burden += island[i].treasure;
      if (burden >= island[i].bridge) {
        cout << "No" << endl;
        flag = false;
        break;
      }
    }
    if (flag) {
      cout << "Yes" << endl;
    }
  }
  return 0;
}
