There are 120 candidates who participated in the mathematics competition today. According to the statistics of the entrance just now, some of them did not wear red scarves, and the rest wore red scarves. If at least one of any two candidates wears a red scarf, how many more candidates wear a red scarf than those who do not.
今天参加数学竞赛的考生有120人，根据刚才进场情况统计、其中有的人没戴红领巾，其余的人都戴红领巾．任意两个考生中至少有1人戴红领巾，则戴红领巾的考生比没戴红领巾的多多少人．
<gadget id="calculator">120 - 1 - 1</gadget>
<output>118</output>

<result>118</result>