t=int(input())
for _ in range(0,t):
n=int(input())
v=list(map(int,input().split( )))
p=list(map(int,input().split( )))
v.sort()
p.sort()
k=1
for i in range(0,n):
if(p[i]<v[i]):
k=0
break
if(k==1):
print("WIN")
else:
print("LOSE")
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