Let's write all the positive integer numbers one after another from 1 without any delimiters (i.e. as a single string). It will be the infinite sequence starting with 123456789101112131415161718192021222324252627282930313233343536...

Your task is to print the k-th digit of this sequence.

Input

The first and only line contains integer k (1 ≤ k ≤ 10000) — the position to process (1-based index).

Output

Print the k-th digit of the resulting infinite sequence.

Examples

Input


7


Output


7


Input


21


Output


5
#include <bits/stdc++.h>
using namespace std;
void flanther_fakadi() {
  long long k = 0;
  cin >> k;
  string s = "";
  for (int i = 1; i <= 10000; i++) {
    s += to_string(i);
  }
  cout << s[k - 1] << endl;
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.tie(NULL);
  int t = 1;
  while (t--) {
    flanther_fakadi();
  }
  return 0;
}
