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
var input_year = parseInt(readline());
input_year++;
var str = input_year.toString();
while(true){
    var bool = true;
    for(var i = 0; i <= 2; i++){
        if(str.indexOf(str[i],i+1) !== -1){
            bool = false;
            break;
        }
    }

    if(bool){
        print(input_year);
        break;
    }
    input_year++;
    str = input_year.toString();
}