271A - Beautiful Year.cpp

/*
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
inputCopy
1987
outputCopy
2013
inputCopy
2013
outputCopy
2014

*/









#include<bits/stdc++.h>
using namespace std;


bool isUnique(int y){
    set<int> s;
    int cnt=0;
    while(y){
        int rem=y%10;
        y/=10;
        s.insert(rem);
        cnt++;
    }

    return s.size()==cnt;
}


int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int y;
    cin>>y;

    while(1){
            y++;
        if(isUnique(y)) break;
    }

    cout<<y;


    return 0;
}