#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
  ;
  string a;
  int n;
  cin >> a >> n;
  for (int i = 0; i < a.length() && n; ++i) {
    char x = a[i];
    int y = i;
    for (int j = i + 1; j <= min((int)a.length() - 1, i + n) && n; ++j)
      if (x < a[j]) x = a[j], y = j;
    if (y != i) {
      n -= y - i;
      while (i != y) {
        swap(a[y - 1], a[y]);
        y--;
      }
    }
  }
  cout << a << endl;
  return 0;
}
