#include <stdio.h>
void insertionsort(int arr[],int n){
    for(int i=1;i<n;i++){
        int key = arr[i];
        int j = i-1;
        while(j>=0 && arr[j]>key){
            arr[j+1] = arr[j];
            j--;
        }
        arr[j+1]=key;
    }
}

int main(){
    int n,arr[100];
    if(scanf("%d",&n)!=1) || n<0 || n>100){
        printf("Invalid input");
        return 0;
    }
    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]);
    }
    printf("\n");
    return 0;
}