Students in the fifth grade of Xiangyang Primary School have to vote for three good students from 8 candidates. It is stipulated that each student must choose 2 people from these 8 people, so at least how many people participate in the voting can ensure that no less than 5 students must vote for the same two candidates.
向阳小学五年级的同学要从8名候选人中投票选举三好学生．规定每位同学必须从这8人中选2人，那么至少有多少人参加投票，才能保证必有不少于5个同学投了相同的两个候选人的票．
<gadget id="calculator">7 + 6 + 5 + 4 + 3 + 2 + 1</gadget>
<output>28</output>

<gadget id="calculator">28 * 4</gadget>
<output>112</output>

<gadget id="calculator">112 + 1</gadget>
<output>113</output>

<result>113</result>