#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; double f(int x,int n){ if(n>0) return x/(x+f(x,n-1)); if(n=0) return 1; } int main(){ int x,n; cin>>x>>n; cout<<f(x,n)<<endl; return 0; }