There are 16 steps in the teaching building of the school. It is stipulated that only one or two steps can be stepped on at a time. How many different ways are there to climb up to the 16th step?
学校教学楼共16级台阶，规定每次只能跨上1级或2级，要登上第16级，共有多少种不同的走法？
<result>1_597</result>