#include <iostream>
using namespace std;
int main(){
    int n;cin>>n;
    int digit = (n+35)/36;
    int k = (n+35)%36;
    int nw = 8;
    int x = 1;
    while(k-nw > 0){
        k -= nw;
        nw--;
        x++;
    }
    cout << x;
    for(int i = 0; digit > i; i++){
        cout << x+k+1;
    }
    cout << endl;
}