Discussion @ 1181. Cutting a Painted Polygon @ Timus Online Judge

hello I have some questions...... [2] // Problem 1181. Cutting a Painted Polygon 14 May 2004 18:00

I got WA all the time.
here is one test :
10
BGBGRBBGRG
I think the answer is 0 .
But the AC solution said it's possible . I'm puzzle.
Who can tell me why ?

Ярославцев Григорий Re: I have some questions...... [1] // Problem 1181. Cutting a Painted Polygon 14 May 2004 21:10

Everything is possible! Just think better.

Tintor Marko Re: I have some questions...... // Problem 1181. Cutting a Painted Polygon 23 Jun 2005 01:44

Solution is 0.
There is edge with 2 blue vertices: BGBGR[BB]GRG

Discussion of Problem 1181. Cutting a Painted Polygon