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;
const int MAX = 1e5 + 2;
const long long MAXINT = 1e18;
const int INF = 1e9;
int t, n, m, caseno = 0, a, b, c, d, u, v, w, flag = 0, k, p, h, ans = 0;
int main() {
  ios_base::sync_with_stdio(false);
  cin >> n;
  for (int i = n + 1;; ++i) {
    set<int> s;
    s.clear();
    int j = i;
    while (j != 0) {
      s.insert(j % 10);
      j /= 10;
    }
    if (s.size() == 4) {
      cout << i;
      return 0;
    }
  }
  return 0;
}
