Codeforces 271-A problem solution

A. Beautiful Year

time limit per test 2 seconds

memory limit per test 256 megabytes

input standard input

output standard output

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

Problem link : https://codeforces.com/contest/271/problem/A

Solution :

• [tab]
• C++

• #include<iostream>
  using namespace std;  
  int main()
   {
       int a,b,c,d;
       int year;
       cin>>year;
       while(1)
       {
           year++;
           a=year/1000;
           b=year/100%10;
           c=year/10%10;
           d=year%10;  
          if(a!=b && a!=c && a!=d && b!=c && b!=d && c!=d)
           {
               break;
           }
       }
       cout<<year<<endl;
       return 0;
   }