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import java.util.HashMap;
import java.util.Map;
public class SelfDescriptiveNumber {
public static void main(String[] args) {
int count = 0;
int i = 1;
while (true) {
if (count == 3) {
break;
}
if (isSelfDescriptiveNumber(i)) {
System.out.println(i);
count++;
}
i++;
}
}
private static boolean isSelfDescriptiveNumber(int number) {
String valueAsString = Integer.valueOf(number).toString();
Map<Integer, Integer> map = new HashMap(valueAsString.length());
for (int i = 0; i < valueAsString.length(); i++) {
final int c = Character.getNumericValue(valueAsString.charAt(i));
if (map.containsKey(c)) {
map.put(c, map.get(c) + 1);
} else {
map.put(c, 1);
}
}
for (int i = 0; i < valueAsString.length(); i++) {
int c = Character.getNumericValue(valueAsString.charAt(i));
if (map.getOrDefault(i, 0) != c) {
return false;
}
}
return true;
}
}
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