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

void solve(){
    int n,A,B;
    cin>>n>>A>>B;
    cout<<"Yes"<<"\n";
    cout<<n-1<<"\n";
    int a,aa,b,bb;
    a=1;
    b=1;
    aa=n;
    bb=n;
    for(int i=1;i<n;i++)
    {
        if(a!=A){
            if(b!=B){
                cout<<a<<" "<<b<<" "<<aa-a<<" "<<bb-b<<" "<<"\n"; //从外面往里面走
                b++;
                a++;
            }else{
                cout<<a<<" "<<bb<<" "<<aa-a<<" "<<b-bb<<" "<<"\n";
                bb--;
                a++;
            }
        }else{
            if(b!=B){
                cout<<aa<<" "<<b<<" "<<a-aa<<" "<<bb-b<<" "<<"\n";
                b++;
                aa--;
            }else{
                cout<<aa<<" "<<bb<<" "<<a-aa<<" "<<b-bb<<" "<<"\n";
                bb--;
                aa--;
            }
        }
    }
}

int main()
{
    int T;
    T=1;
    //cin>>T;
    while(T--){
        solve();
    }
}