#include<stdio.h>
voidInsertionSort(int arr[],int n) {
    int key, j;
    for(int i=1;i<n;i++){
        key=arr[i];
        j=i-1;
        while(j >= 0 && arr[j] > key){
            arr[j+1]=arr[j];
            j--;
        }
        arr[j+1]=key;
    }
    
}
int main() {
    int n;
    if(scanf(" %d",&n)!=1 || n<0){
        printf("Invalid input");
        return 0;
    }
    int arr[100];
    for(int i = 0;i<n;i++){
        if (scanf(" %d", &arr[i] != 1){
            printf("Invalid input");
            return 0;
        }
    }
    InsertionSort(arr, n);
    for( int i =0;i < n;i++){
        printf("%d",arr[i]);
    }
    return 0;
}