There are several children, and each of them has a 74 cm long iron wire in their hands. Each of them uses the iron wire in their hands to make an isosceles triangle frame (use all of them, without joints, and the side length is the whole centimeter), and each of them makes The isosceles triangle frames are different. May I ask how many children there are at most?
有若干个小朋友，每人手中都有一根长74厘米的铁丝，他们每人用手中的铁丝制作一个等腰三角形框架(全部用上，无接头，边长是整厘米数)，结果每人制作的等腰三角形框架都不相同．请问最多有多少个小朋友．
<result>18</result>