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fridge.java
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fridge.java
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import java.io.*;
import java.util.*;
public class fridge {
public static void main(String[] args) throws Exception {
BufferedReader sc = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter dc = new BufferedWriter(new OutputStreamWriter(System.out));
int[] arr = new int[10];
for (char c : sc.readLine().toCharArray()) {
int num = c - '0';
arr[num]++;
}
int minKey = 0, minVal = Integer.MAX_VALUE;
boolean done = false;
for (int x = 1; x < arr.length; x++) {
if (arr[x] == 0) {
dc.write(x + "\n");
done = true;
break;
}
if (arr[x] < minVal) {
minKey = x;
minVal = arr[x];
}
}
if (!done) {
if (arr[0] == 0)
dc.write("10\n");
else {
dc.write(minKey + "");
arr[minKey]--;
if (arr[0] <= arr[minKey])
minKey = 0;
while (arr[minKey]-- >= 0)
dc.write(minKey + "");
}
}
dc.close();
sc.close();
}
}