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codeforces-beautiful year 

#include<bits/stdc++.h>
using namespace std;
bool check(int n)
{
 int count[10]={0};
 while(n!=0)
 {
  int t=n%10;
  count[t]++;
  n=n/10;
 }
 int flag=1;
 for(int i=0;i<10;i++)
 {
  if(count[i]>1)
  {
   return false;
   flag=0;
   break;
  }
 }
 if(flag==1)
  return true;
}
int main()
{
 int y;
 cin>>y;
 int i;
 if(check(y))
  y++;
 for( i=y;;i++)
 {
  if(check(i))
  {
   cout<<i;
   break;
  }
 }

 return 0;

}

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