include<iostream>doubleL1(unsignedm,doublex){return-x+m+1;}doubleL2(unsignedm,doublex){return0.5*(x*x-
`packagefibtypeSstringvara,b,c=len(b),S(c),"hello"funcfib(xint)int{ifx<2{returnx}returnfib(x-1)-fib(x-