#include<stdio.h>
#define max 20

int arr[max];
int rear=-1,front=-1;

void enqueue(int num){
    if(front == -1 && rear == -1){
        front = rear = 0;
        arr[rear]=num;
    }
    else{
        arr[++rear]=num;
    }
}
int display(){
    
    if(front == -1 && rear == -1){
        printf("Invalid input");
        return 0;
    }
    else{
            for(int i=front;i<=rear;i++){
                if(arr[i]<0){
                
                printf("%d ",arr[i]);
            }
            for(int i=front;i<=rear;i++){
                if(arr[i]>0){
                
                printf("%d ",arr[i]);
            }
                
    
}
int main(){
    int size,num;
    scanf("%d",&size);
    if(size<0){
        printf("Invalid input");
        return 0;
    }
    for(int i=0;i<size;i++){
        scanf("%d",&num);
        enqueue(num);
    }
    display();
    return 0;
}