int isWin(long long x)
{
	while (x>2)
	{
		long double sq = sqrt((long double)x);
		long double c_sq = ceill(sq);
		if (sq == c_sq) 
			return 1;
		x -= (long long)c_sq;
	}
	if (x != 2)
		return 1;//win
	else
		return 0;//lose
}

int main()
{
	FILE* in = fopen("input.txt", "r");
	long long int t = 0;
	fscanf(in, "%llu", &t);
	fclose(in);

	FILE* out = fopen("output.txt", "w");
	fprintf(out, isWin(t)==1? "WIN" : "LOSE");
	fclose(out);
	
	return 0;
}

long long find_next(long long x)
{
	long double d=1+4*x;
	long double sq_d=ceill(sqrtl(d));
	long long res=ceill((1+2*x+sq_d)/2);
	if(sq_d*sq_d==d)
		res+=1;
	return res;
}

int isWin2(long long x)
{
	for(long long s=2;s<=x;s=find_next(s))
	{
		if(x==s)
			return 0;
	}
	return 1;
}
int main()
{

	FILE* in = fopen("input.txt", "r");
	long long int t = 0;
	fscanf(in, "%llu", &t);
	fclose(in);

	FILE* out = fopen("output.txt", "w");
	fprintf(out, isWin2(t)==1? "WIN" : "LOSE");
	fclose(out);
	return 0;
}

#include <stdio.h>
#include <math.h>







__int64 find_next(__int64 x)
{
	long double d=1+4*x;
	long double sq_d=ceill(sqrtl(d));
	__int64 res=ceill((1+2*x+sq_d)/2);
	if(sq_d*sq_d==d)
		res+=1;
	return res;
}

int isWin2(__int64 x)
{
	for(__int64 s=2;s<=x;s=find_next(s))
	{
		if(x==s)
			return 0;
	}
	return 1;
}
int main()
{

	FILE* in = fopen("input.txt", "r");
	__int64 t = 0;
	fscanf(in, "%I64d", &t);
	fclose(in);

	FILE* out = fopen("output.txt", "w");
	fprintf(out, isWin2(t)==1? "WIN" : "LOSE");
	fclose(out);
	return 0;
}

int isWin(__int64 x)
{
	while (x>2)
	{
		long double sq = sqrt((long double)x);
		long double c_sq = ceill(sq);
		if (sq == c_sq) 
			return 1;
		x -= (__int64)c_sq;
	}
	if (x != 2)
		return 1;//win
	else
		return 0;//lose
}

int main()
{
	FILE* in = fopen("input.txt", "r");
	__int64 t = 0;
	fscanf(in, "%I64d", &t);
	fclose(in);

	FILE* out = fopen("output.txt", "w");
	fprintf(out, isWin(t)==1? "WIN" : "LOSE");
	fclose(out);
	
	return 0;
}

_main	PROC						; COMDAT
; Line 4
  00000	55		 push	 ebp
  00001	8b ec		 mov	 ebp, esp
  00003	81 ec e0 00 00
	00		 sub	 esp, 224		; 000000e0H
  00009	53		 push	 ebx
  0000a	56		 push	 esi
  0000b	57		 push	 edi
  0000c	8d bd 20 ff ff
	ff		 lea	 edi, DWORD PTR [ebp-224]
  00012	b9 38 00 00 00	 mov	 ecx, 56			; 00000038H
  00017	b8 cc cc cc cc	 mov	 eax, -858993460		; ccccccccH
  0001c	f3 ab		 rep stosd
; Line 5
  0001e	c7 45 f4 02 00
	00 00		 mov	 DWORD PTR _x$[ebp], 2
  00025	c7 45 f8 00 00
	00 00		 mov	 DWORD PTR _x$[ebp+4], 0
; Line 6
  0002c	c7 45 e4 03 00
	00 00		 mov	 DWORD PTR _y$[ebp], 3
  00033	c7 45 e8 00 00
	00 00		 mov	 DWORD PTR _y$[ebp+4], 0
; Line 7
  0003a	33 c0		 xor	 eax, eax
; Line 8
  0003c	5f		 pop	 edi
  0003d	5e		 pop	 esi
  0003e	5b		 pop	 ebx
  0003f	8b e5		 mov	 esp, ebp
  00041	5d		 pop	 ebp
  00042	c3		 ret	 0
_main	ENDP
_TEXT	ENDS
END

1              2
3,4           5
9..11        8
13..16       12          
18..21       17
23..27       22
29..33       28
35..40       34
42..47       41
49..55       48
57..64       56
66..73       65
75..83       74
85..93       84
95..104   105