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;
bool flag = 0;
int main() {
  int y;
  cin >> y;
  int x;
  bool flag = 0;
  while (1) {
    y++;
    x = y;
    vector<int> v;
    while (x) {
      v.push_back(x % 10);
      x /= 10;
    }
    for (int i = 0; i < v.size(); i++) {
      for (int j = i + 1; j < v.size(); j++) {
        if (v[i] == v[j]) {
          flag = 1;
          break;
        }
      }
    }
    if (flag) {
      flag = 0;
    } else {
      break;
    }
  }
  cout << y << endl;
  return 0;
}
