import java.util.Arrays;

public class MaxNumber {
    public static long print(long number) {
        
        long num = Math.abs(number);
        
        int[] digitCount = new int[10];
        
        while (num > 0) {
            digitCount[(int)(num % 10)]++;
            num /= 10;
        }
        
        long maxNumber = 0;
        for (int i = 9; i >= 0; i--) {
            for (int j = 0; j < digitCount[i]; j++) {
                maxNumber = maxNumber * 10 + i;
            }
        }
        
        if (number < 0) {
            return -maxNumber;
        }
        
        return maxNumber;
    }
}