there lot rumor medium day one day Aida decide find rumor madeshe ask n friend help they form circle Aida tell person right piece news simple string then person tell string person hisher right but do not tell stre exactly they d hear each person type change remove character end hear string add character end hear string finally rumor pass exactly n move complete cycle Aida hear different expect person leave she think cheated change explain now wants write pike piece code get initial final string tell Aida possible final string initial rule describe