#include<stdio.h>
#define max 100
int stack[max];
int top=-1;
int s1[max];
int main(){
    int n;
    scanf("%d",&n);
    if(n<0){
        printf("Ivalid input");
        return 0;
    }
    for(int i=0;i<n;i++){
        int x;
        scanf("%d",&x);
        s1[++top]=x;
    }
    for(int i=0;i<=top;i++){
        for(int j=i+1;j<=top;j++){
            if(s1[i]>s[j]){
                int temp=s1[i];
                s1[i]=s1[j];
                s1[j]=temp;
            }
        }
    }
    for(int i=0;i<=top;i++){
        printf("%d",s1[i]);
    }
    return 0;
}