A school sent 16 students to participate in the "Asian Cup" mathematics competition. It is known that among the 4 students selected randomly, there will always be at least 1 male student. Ask at least how many male students are sent by a certain school?
某校派出16名学生参加《亚洲杯》数学比赛，已知任意选择4人中，总会有最少1名男学生．问某校最少派出有多少名男学生？
<gadget id="calculator">16 - 3</gadget>
<output>13</output>

<result>13</result>