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C271A.java
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C271A.java
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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/**
* */
public class C271A {
/**
* @param args
*/
public static void main(String[] args) {
BufferedReader reader =new BufferedReader(
new InputStreamReader(System.in)); // STDIN
try {
Integer n=Integer.valueOf(reader.readLine().trim());
Integer m=n+1;
while(!hasDifferentDigits(m))
m++;
System.out.println(m);
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public static boolean hasDifferentDigits(int n){
boolean[] digits=new boolean[10];
String s=String.valueOf(n);
int[] d=new int[4];
for(int i=0;i!=4;i++){
int iDigit=Integer.valueOf(s.substring(i, i+1));
if(digits[iDigit])
return false;
digits[iDigit]=true;
}
return true;
}
}