It seems like the year of 2013 came only yesterday. Do you know a curious fact? The year of 2013 is the first year after the old 1987 with only distinct digits.

Now you are suggested to solve the following problem: given a year number, find the minimum year number which is strictly larger than the given one and has only distinct digits.

Input

The single line contains integer y (1000 ≤ y ≤ 9000) — the year number.

Output

Print a single integer — the minimum year number that is strictly larger than y and all it's digits are distinct. It is guaranteed that the answer exists.

Examples

Input

1987


Output

2013


Input

2013


Output

2014
#include <bits/stdc++.h>
using namespace std;
using lli = long long int;
using ld = long double;
using ulli = unsigned long long int;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int y;
  cin >> y;
  string s = to_string(y + 1);
  int size = (int)s.size();
  y += 1;
  set<char> nums;
  bool isDistinct = false;
  while (true) {
    if (isDistinct) {
      break;
    } else {
      for (int i = 0; i < (int)s.size(); i++) {
        nums.insert(s[i]);
      }
      if ((int)nums.size() == size) {
        isDistinct = true;
      } else {
        nums.clear();
        y += 1;
        s = to_string(y);
      }
    }
  }
  cout << y;
}
