One cold winter evening Alice and her older brother Bob was sitting at home near the fireplace and giving each other interesting problems to solve. When it was Alice's turn, she told the number n to Bob and said:

—Shuffle the digits in this number in order to obtain the smallest possible number without leading zeroes.

—No problem! — said Bob and immediately gave her an answer.

Alice said a random number, so she doesn't know whether Bob's answer is correct. Help her to find this out, because impatient brother is waiting for the verdict.

Input

The first line contains one integer n (0 ≤ n ≤ 109) without leading zeroes. The second lines contains one integer m (0 ≤ m ≤ 109) — Bob's answer, possibly with leading zeroes.

Output

Print OK if Bob's answer is correct and WRONG_ANSWER otherwise.

Examples

Input

3310
1033


Output

OK


Input

4
5


Output

WRONG_ANSWER
import java.io.*;
import java.util.Arrays;



 
 public  class exp {
    
    static Reader in;
    static PrintWriter out;
    static int lim;
    
    public static void main (String [] args) throws IOException {
        in = new Reader ();
        out = new PrintWriter(System.out);
     
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        
        
        
        
     
        char arr[]=br.readLine().toCharArray();
        char arr1[]=br.readLine().toCharArray();
        
        
        int second=Integer.parseInt(new String(arr1));
        
        
        
        Arrays.sort(arr);
        
        int pos=-1;
        for(int i=0;i<arr.length;i++)
        {
            if(arr[i]!='0')
            {
                pos=i;
                break;
            }
        
        }

        if(pos!=-1)
        {
            char tmp=arr[0];
            arr[0]=arr[pos];
            arr[pos]=tmp;
        }
        
        
        String st=new String(arr);
        int first=Integer.parseInt(st);
        
        if((arr1[0]!='0'||arr1.length==1)&&first==second)
            System.out.println("OK");
        else
            System.out.println("WRONG_ANSWER");
        
       
                

      
        
        }
    
 

        

    
    

    

    

    
    

    
 
    
 
    
 
 static class Reader {final private int BUFFER_SIZE=1<<16;private DataInputStream din;private byte[]buffer;private int bufferPointer,bytesRead;public Reader() {din=new DataInputStream(System.in);buffer=new byte[BUFFER_SIZE];bufferPointer=bytesRead=0;} public Reader(String file_name)throws IOException {din=new DataInputStream(new FileInputStream(file_name));buffer=new byte[BUFFER_SIZE];bufferPointer=bytesRead=0;} public String readLine()throws IOException {byte[]buf=new byte[64];int cnt=0,c;while((c=read())!=-1) {if(c=='\n') break;buf[cnt++]=(byte)c;} return new String(buf,0,cnt);} public int nextInt()throws IOException {int ret=0;byte c=read();while(c<=' ') c=read();boolean neg=(c=='-');if(neg) c=read();do {ret=ret*10+c-'0';}while((c=read())>='0'&&c<='9');if(neg) return-ret;return ret;} public long nextLong()throws IOException {long ret=0;byte c=read();while(c<=' ') c=read();boolean neg=(c=='-');if(neg) c=read();do{ret=ret*10+c-'0';} while((c=read())>='0'&&c<='9');if(neg) return-ret;return ret;} public double nextDouble()throws IOException {double ret=0,div=1;byte c=read();while(c<=' ') c=read();boolean neg=(c=='-');if(neg) c=read();do{ret=ret*10+c-'0';} while((c=read())>='0'&&c<='9');if(c=='.') {while((c=read())>='0'&&c<='9') {ret+=(c-'0')/(div*=10);}} if(neg) return-ret;return ret;} private void fillBuffer()throws IOException {bytesRead=din.read(buffer,bufferPointer=0,BUFFER_SIZE);if(bytesRead==-1) buffer[0]=-1;} private byte read()throws IOException {if(bufferPointer==bytesRead) fillBuffer();return buffer[bufferPointer++];} public void close()throws IOException {if(din==null) return;din.close();}}
 
    } 