Description: Polygon game, belongs to the international informatics Olympic competition for the test. There is a single, start a vertex constitute or n polygon, each vertices are an initial value, each of which side operation the symbols+, X. According to the steps
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polygon_game
............\main.cpp
............\matrix.h
............\polygon_game.dsp
............\polygon_game.dsw
............\polygon_game.h
............\polygon_game.ncb
............\polygon_game.opt
............\polygon_game.plg
............\polygon_in.txt
............\polygon_out.txt
............\utility.h