Name: Anonymous 2008-12-20 15:04
fibs = 1 : zipWith (+) fibs (tail fibs)
fibs = 1 : zipWith (+) fibs (tail fibs)
int fibs[] = {0,1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,1597,2584,4181,6765};
int fib(int n){
if(n<0 || n>20) exit();
return fibs[n];
}-O3.