The greedy approach you're using doesn't handle all cases, eg
0 1
5 6
0 2
1 6
On Fri, 10 Apr 2020, 16:55 rajeswara reddy, <rajeswar972...@gmail.com>
wrote:
>
> Can anyone find what's wrong in my program for parenting partners returns
> problem
>
> z=int(input())
> for zz in range(1,z+1):
> n=int(input())
> l=[]
> out='C'
> for i in range(n):
> t=list(map(int,input().split()))
> l.append(t)
> c=set(range(l[0][0],l[0][1]))
> j=set()
> for i in l[1:]:
> t=set(range(i[0],i[1]))
> if len(c.intersection(t))==0:
> out+='C'
> c.update(t)
> elif len(j.intersection(t))==0:
> out+='J'
> j.update(t)
> else:
> out="IMPOSSIBLE"
> break
> print("Case #{}: {}".format(zz,out))
>
>
>
>
>
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