1/x+16/y=1,
(1+x+y)(1/x+16/y)
=1/x+y/x+16x/y+16/y+1+16
=y/x+16x/y+18
y/x+16x/y>=8
1+x+y=y/x+16x/y+18>=8+18=26
的最小值=26