There are 120 young pioneers electing the team leader. There are three candidates, A, B and C. Each young pioneer can only choose one of them and cannot abstain. If among the top 100, A gets 45 votes and B wins 35 votes, at least how many votes are needed for A to be elected?
120名少先队员选举大队长，有甲、乙、丙三个候选人，每个少先队员只能选他们之中的一个人，不能弃权，若前100名中，甲取得了45票，乙得了35票，甲要当选至少还需要多少张选票？
<result>6</result>