There are 10 questions in a test, each question can get 5 points for a complete answer, 3 points for half of the answers, no points for wrong answers or no answers, at least how many people participate in the competition to ensure that there are 3 people with the same score.
一次测验共有10道题，每道题完全答对可以得5分，答对一半可以得3分，答错或不答不得分，至少有多少人参加比赛才能保证有3人的得分相同．
<gadget id="calculator">45 * 2</gadget>
<output>90</output>

<gadget id="calculator">90 + 1</gadget>
<output>91</output>

<result>91</result>