271A_Beautiful_Year.cpp

/*                                                                A. Beautiful Year
                                                                                                     time limit per test2 seconds
                                                                                                     memory limit per test256 megabytes
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>
#include <set>

using namespace std;

int main() {
    int y;          // use cin.tie(0) //
    cin >> y;
    
    while (true) {
        y++;
        set<int> digits;
        int temp = y;
        while (temp) {
            digits.insert(temp % 10);
            temp /= 10;
        }
        if (digits.size() == 4) {
            cout << y << endl;
          break;
        }
    }
    return 0;
}