Problem: One day Igor K. stopped programming and took up math. One late autumn evening he was sitting at a table reading a book and thinking about something. 

The following statement caught his attention: "Among any six people there are either three pairwise acquainted people or three pairwise unacquainted people"

Igor just couldn't get why the required minimum is 6 people. "Well, that's the same for five people, too!" — he kept on repeating in his mind. — "Let's take, say, Max, Ilya, Vova — here, they all know each other! And now let's add Dima and Oleg to Vova — none of them is acquainted with each other! Now, that math is just rubbish!"

Igor K. took 5 friends of his and wrote down who of them is friends with whom. Now he wants to check whether it is true for the five people that among them there are either three pairwise acquainted or three pairwise not acquainted people.

Input

The first line contains an integer m (0 ≤ m ≤ 10), which is the number of relations of acquaintances among the five friends of Igor's.

Each of the following m lines contains two integers ai and bi (1 ≤ ai, bi ≤ 5;ai ≠ bi), where (ai, bi) is a pair of acquainted people. It is guaranteed that each pair of the acquaintances is described exactly once. The acquaintance relation is symmetrical, i.e. if x is acquainted with y, then y is also acquainted with x.

Output

Print "FAIL", if among those five people there are no either three pairwise acquainted or three pairwise unacquainted people. Otherwise print "WIN".

Examples

Input

4
1 3
2 3
1 4
5 3


Output

WIN


Input

5
1 2
2 3
3 4
4 5
5 1


Output

FAIL

Solution (in JAVA):

Solution:
import java.io.*;
import java.util.*;





public class B {
        String line = null;
        
        public void run() throws Exception{

            BufferedReader br = null;
            File file = new File("input.txt");
            if(file.exists()){
                    br = new BufferedReader(new FileReader("input.txt"));
            }
            else{
                    br = new BufferedReader(new InputStreamReader(System.in));
            }
    
            String s = br.readLine();
            int N = Integer.parseInt(s);
               
            int[][] pair = new int[N][2];
            for(int i = 0; i < N; i++){
            	s = br.readLine();
            	String[] ss = s.split(" ");
            	pair[i][0] = Integer.parseInt(ss[0]);
            	pair[i][1] = Integer.parseInt(ss[1]);
            	if(pair[i][0] > pair[i][1]){
            		int tmp = pair[i][0];
            		pair[i][0] = pair[i][1];
            		pair[i][1] = tmp;
            	}
            }
            
            Combination c = new Combination(5, 3);
    		Iterator<int[]> ite = c.iterator();
    		while(ite.hasNext()){
    			int[] ret = ite.next();
    			int[] ck = new int[3];
    			int pos = 0;
    			for(int i = 0; i < ret.length; i++){
    				if(ret[i] == 1){
    					ck[pos] = i+1;
    					pos++;
    				}
    			}
    			boolean flag = false;
    			// 0, 1
    			for(int i = 0; i < N; i++){
    				if(pair[i][0] == ck[0] && pair[i][1] == ck[1]){
    					flag = true;
    				}
    			}
    			if(flag){
    				flag = false;
        			// 0, 2
        			for(int i = 0; i < N; i++){
        				if(pair[i][0] == ck[0] && pair[i][1] == ck[2]){
        					flag = true;
        				}
        			}
        			if(flag){
        				flag = false;
            			// 1, 2
            			for(int i = 0; i < N; i++){
            				if(pair[i][0] == ck[1] && pair[i][1] == ck[2]){
            					flag = true;
            				}
            			}
            			if(flag){
            				System.out.println("WIN");
            				return;
            			}
        			}
    			}
    			flag = false;
    			// 0, 1
    			for(int i = 0; i < N; i++){
    				if(pair[i][0] == ck[0] && pair[i][1] == ck[1]){
    					flag = true;
    				}
    			}
    			if(!flag){
    				flag = false;
        			// 0, 2
        			for(int i = 0; i < N; i++){
        				if(pair[i][0] == ck[0] && pair[i][1] == ck[2]){
        					flag = true;
        				}
        			}
        			if(!flag){
        				flag = false;
            			// 1, 2
            			for(int i = 0; i < N; i++){
            				if(pair[i][0] == ck[1] && pair[i][1] == ck[2]){
            					flag = true;
            				}
            			}
            			if(!flag){
            				System.out.println("WIN");
            				return;
            			}
        			}
    			}
    			

    		}	
    		System.out.println("FAIL");
        }
        
        
        
        /**
         * @param args
         */
        public static void main(String[] args) throws Exception{
                B t = new B();
                t.run();

        }
        public class Combination implements Iterable<int[]> {
    		private final int max;
    		private final int select;
    		
    		public Combination(int max, int select) {
    			if (max < 1 || 62 < max) {
    				throw new IllegalArgumentException();
    			}
    			this.max = max;
    			this.select = select;
    		}
    		
    		public Iterator<int[]> iterator() {
    			return new CombinationIterator(max, select);
    		}
    		
    		private class CombinationIterator implements Iterator<int[]> {
    			private long value;
    			private final long max;
    			private final int size;
    			private int[] ret = null;
    			public CombinationIterator(int max, int select) {
    				this.value = (1L << select) - 1L;
    				this.size = max;
    				this.max = 1L << max;
    				this.ret = new int[size];
    			}

    		
    			public boolean hasNext() {
    				return value < max;
    			}

    	
    			public int[] next() {
    				long stock = value;
    				value = next(value);
    				
    				for(int i = 0; i < size; i++){
    					long tmp = stock >> i;
    					tmp = tmp & 1;
    					ret[i] = (int)tmp;
    				}
    				
    				return ret;
    			}

    		
    			public void remove() {
    				throw new UnsupportedOperationException();
    			}

    			private long next(long source) {
    				long param1 = smallestBitOf(source);
    				long param2 = param1 + source;
    				long param3 = smallestBitOf(param2);
    				long param5 = (param3 / param1) >>> 1;
    				return param5 - 1 + param2;
    			}

    			private long smallestBitOf(long source) {
    				long result = 1L;
    				while (source % 2 == 0) {
    					source >>>= 1;
    					result <<= 1;
    				}
    				return result;
    			}
    		}
    	}
}