#include<bits/stdc++.h>
const int N=200005;
using namespace std;

int n;
int a[N];

int cc[N];
int fl[N];
int A[N],cnt,nw;
void dfs(int k){
    if(1.*clock()/CLOCKS_PER_SEC>=2.8){
        cout<<"No"<<endl;
        exit(0);
    }
    if(k==n*4+1){
        cout<<"Yes"<<endl;
        for(int i=1;i<=n<<2;i++)
            cout<<fl[i];
        exit(0);
    }
    if(A[nw+1]==a[k]&&nw<cnt){
        nw++;
        dfs(k+1);
        nw--;
    }
    if(cnt==n*2)return ;
    if(cc[a[k]]==2)return ;
    cc[a[k]]++;
    fl[k]=1;
    A[++cnt]=a[k];
    dfs(k+1);
    cc[a[k]]--;
    cnt--;
    fl[k]=0;
}

void solve(){
    cin>>n;
    for(int i=1;i<=n*4;i++)
        cin>>a[i];
    dfs(1);
    cout<<"No"<<endl;
}

main(){
    ios::sync_with_stdio(0);
    int _T=1;//cin>>_T;
    while(_T--)solve();
}

  File "answer.code", line 2
    const int N=200005;
          ^^^
SyntaxError: invalid syntax