#include <bits/stdc++.h>
using namespace std;

int main(){
    int N,cur=0;
    cin>>N;
    string ans="Yes";
    vector<vector<int>> block(N,vector<int>(2));
    for(int i=0;i<N;++i){
        for(int j=0;j<2;++j){
            cin>>block[i][j];
        }
    }
    sort(block.begin(),block.end(),[](vector<int> a,vector<int> b){
        return a[0]+a[1]<b[0]+b[1];
    });
    for(vector<int> v:block){
        if(v[0]<cur){
            ans="No";
        }
        cur+=v[1];
    }
    cout<<ans<<endl;
}