import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        PriorityQueue<Block> blocks = new PriorityQueue<>();
        for (int i = 0; i < n; i++) {
            blocks.add(new Block(sc.nextInt(), sc.nextInt()));
        }
        long weight = 0;
        while (blocks.size() > 0) {
            Block b = blocks.poll();
            if (weight > b.limit) {
                System.out.println("No");
                return;
            }
            weight += b.weight;
        }
        System.out.println("Yes");
    }
    
    static class Block implements Comparable<Block> {
        int weight;
        int limit;
        
        public Block(int weight, int limit) {
            this.weight = weight;
            this.limit = limit;
        }
        
        public int compareTo(Block b) {
            return limit - b.limit;
        }
    }
}


class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public String next() throws Exception {
        if (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}