1 #include <bits/stdc++.h> 
 2 using namespace std ; 
 3 
 4 const int maxn = 1e5+11 ; 
 5 int n,a,b ; 
 6 int num[maxn],fa[maxn] ;  
 7 
 8 inline int find(int x) 
 9 {
10     if(fa[x] == x) return x ; 
11     return fa[x] = find(fa[x]) ; 
12 }
13 
14 int main() 
15 {
16     scanf("%d%d%d",&n,&a,&b) ; 
17     map<int,int> mp ; 
18     for(int i=1;i<=n;i++) 
19         scanf("%d",&num[ i ]) , mp[ num[ i ] ] = i ; 
20     
21     int x ; 
22     for(int i=1;i<=n+2;i++) fa[ i ] = i ; 
23     for(int i=1;i<=n;i++) 
24     {
25         x = find( i ) ; 
26         if( mp.count( a-num[ i ] ) ) 
27             fa[ x ] = find( mp[ a-num[ i ] ] ) ;  
28         else  
29             fa[ x ] = find( n+1 ) ;    //  不行的话就加入B 组 
30         x = find( i ) ; 
31         if( mp.count( b-num[ i ] ) ) 
32             fa[ x ] = find( mp[ b-num[ i ] ] ) ; 
33         else
34             fa[ x ] = find( n+2 ) ;  
35     }
36     if( find(n+1)==find(n+2) ) 
37     {
38         printf("NO\n") ;  
39         return 0 ; 
40     }
41     printf("YES\n") ; 
42     for(int i=1;i<=n;i++) 
43         printf("%d ",find( i )==find(n+1) ) ; 
44     
45     return 0 ; 
46 }