total of 160 people entered the final of a mathematics competition. There were four questions in the final. There were 136 people who got the first question right, 125 people who got the second question right, 118 people who got the third question right, and the fourth question. There are 104 people, at least how many people get full marks in this final.
某数学竞赛共160人进入决赛，决赛共四题，做对第一题的有136人，做对第二题的有125人，做对第三题的有118人，做对第四题的有104人，在这次决赛中至少有多少人得满分．
<gadget id="calculator">136 + 125 + 118 + 104</gadget>
<output>483</output>

<gadget id="calculator">160 * 3</gadget>
<output>480</output>

<gadget id="calculator">483 - 480</gadget>
<output>3</output>

<result>3</result>