There are 32 people in class one of the sixth grade who participated in the math competition, 27 people participated in the English competition, and 22 people participated in the Chinese competition. Among them, 12 people participated in mathematics and English, and 14 people participated in Chinese and English. There are 10 students in Mathematics and Chinese, so how many students are there in Class 1 of Grade 6?
六年级一班有32人参加数学竞赛，有27人参加英语竞赛，有22人参加语文竞赛，其中参加了数学和英语两科的有12人，参加了语文和英语的有14人，参加了数学和语文两科的有10人，那么六年级一班至少有多少人．
<gadget id="calculator">81 - 30 - 4</gadget>
<output>47</output>

<result>47</result>