100 young pioneers are elected as the team leader. The candidates are A, B and C. During the election, each person can only vote for one person. The person who gets the most votes is elected. The ballots are counted in the middle. Among the first 61 ballots, A gets 35 votes. B gets 10 votes and C gets 16 votes. Question: Among the uncounted ballots, how many more votes will A be sure to win?
100名少先队员选大队长，候选人是甲、乙、丙三人，选举时每人只能投票选举一人，得票最多的人当选，开票中途累计，前61张选票中，甲得35票，乙得10票，丙得16票．问在尚未统计的选票中，甲至少再得多少票就一定当选？
<gadget id="calculator">100 - 61</gadget>
<output>39</output>

<gadget id="calculator">35 - 16</gadget>
<output>19</output>

<gadget id="calculator">39 - 19</gadget>
<output>20</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<result>11</result>