There are 50 students in Class 5 (1) to choose the monitor. There are three candidates, A, B, and C. Each person can only choose one of them and cannot abstain. Among the first 40 votes, A gets 20 votes, B gets 14 votes, and C gets 6 votes. It is stipulated that whoever has the most votes will be elected. If A must be elected, at least how many votes are needed?
五(一)班有50个学生选班长，有甲、乙、丙三个候选人，每人只能选他们之中的一个人，不能弃权．前40票中，甲得到20票，乙得到14票，丙得到6票，规定谁的票最多谁当选．若甲要一定当选，最少还需多少张票？
<gadget id="calculator">50 - 6</gadget>
<output>44</output>

<gadget id="calculator">44 / 2</gadget>
<output>22</output>

<gadget id="calculator">1 - 20</gadget>
<output>-19</output>

<gadget id="calculator">22 + (-19)</gadget>
<output>3</output>

<result>3</result>