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;
int kkaass = 1;
int main() {
  int a;
  cin >> a;
  int b = a + 1;
  while (b) {
    int x = b;
    bool f[10] = {0};
    bool bahir = true;
    while (x) {
      int g = x % 10;
      if (f[g]) {
        bahir = false;
        break;
      } else
        f[g] = true;
      x /= 10;
    }
    if (bahir) {
      cout << b << endl;
      return 0;
    }
    b++;
  }
  return 0;
}
