the evil Bumbershoot corporation produce clone gruesome experiment vast underground lab on occasion corp cloned boy Andryusha smart comrade immediately Andryusha understand fishy go he rally fellow clone feud evil corp set find exit lab the corp reduce destroy lab complexthe lab picture connect graph n vertex m edge k clone Andryusha start look exit vertex each clone traverse edge second any number clone allow vertex simultaneously each clone allow stop look time moment look start vertex the exit locate vertex lab vertex visit cloneeach clone visit vertex lab explodesyour task choose start vertex search route clone each route vertice