public class Solution {
    public static void main(String[] args) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        int[] array = new int[20];
        for (int i = 0; i < 20; i++) {
            array[i] = Integer.parseInt(reader.readLine());
        }

        sort(array);

        for (int x : array) {
            System.out.println(x);
        }
    }

    public static void sort(int[] array) {
        //write your code here
        for (int i=0;i<array.length;i++){
            int max=array[i];
            for (int j=i+1;j<array.length;j++){
                if (array[j]<max){
                    max=array[j];
                }
                array[i]=max;
            }
        }
    }
}