#include using namespace std; typedef long long ll; int main(){ int x; cin>>x; ll p=1, q=1; while(p<=1e18){ ll p2=3*p+4*q, q2=2*p+3*q; ll a=(p2-1)/2, b=a+1, c=q2; int d=0; ll c1=c; while(c1){ c1/=10; d++; } if(d==x){ cout<