#include<bits/stdc++.h>
#define int long long
using namespace std;
struct block{int w,s;};
block B[1100];
signed main(){
  int N;cin>>N;
  for(int i=0;i<N;i++)cin>>B[i].w>>B[i].s;
  sort(B,B+N,[](block a,block b){return a.w+a.s<b.w+b.s;});
  int sum=0;
  for(int i=0;i<N;i++){
    if(sum>B[i].s)return puts("No"),0;
    sum+=B[i].w;
  }
  puts("Yes");
}