#include<bits/stdc++.h>
#define int long long
using namespace std;
const int INF=1e18;
struct block{int w,s,v;};
void chmax(int &a,int b){if(a<b)a=b;}
block B[1100];
int dp[1100][20100];
signed main(){
  int N;cin>>N;
  for(int i=0;i<N;i++)cin>>B[i].w>>B[i].s,B[i].v=1;
  sort(B,B+N,[](block a,block b){return a.w+a.s<b.w+b.s;});
  fill(dp[0],dp[N+1],-INF);
  dp[0][0]=0;
  for(int i=0;i<N;i++){
    for(int j=0;j<=20000;j++)dp[i+1][j]=dp[i][j];
    for(int j=0;j+B[i].w<=20000;j++)if(j<=B[i].s)
      chmax(dp[i+1][j+B[i].w],dp[i][j]+B[i].v);
  }
  int ans=-INF;
  for(int i=0;i<=20000;i++)chmax(ans,dp[N][i]);
  puts(ans==N?"Yes":"No");
}