#include<bits/stdc++.h>
using namespace std;
vector<pair<int, int>> p;
int n, m;
int main()
{
cin >> n >> m;
for(int i = 1; i <= n; i++ ){
int x = i;
int res = 0;
while(x){
res += x % 10;
x /= 10;
}
p.push_back({res, i});
}
sort(p.begin(), p.end());
cout << p[m - 1].second << endl;
return 0;
}