#include<stdio.h>

int arr[25],size,top=-1;

void enqueue(int num){
    if(top==size-1){
        printf("queue is full");
        return;
    }
    arr[++top]=num;
}
void dequeue(){
    if(top==-1){
        printf("Invalid input");
        return;
    }
    int itr;
    for(itr=0;itr<=top;itr++){
        arr[itr]=arr[itr1];
        
    }
    top--;
}
void display(){
    int itr,itr1;
    for(itr=0;itr<=top;itr++){
        if(arr[itr]<0){
         printf("%d ",arr[itr]);
        }
        for(itr1=0;itr1<=top;itr1++){
        if(arr[itr1]>=0){
            printf("%d ",arr[itr1]);
        }
        }
        
    }
}
int main(){
    int itr,num;
    scanf("%d",&size);
    if(size<0){
        printf("Invalid input");
        return 0;
    }
    for(itr=0;itr<size;itr++){
        scanf("%d",&num);
        enqueue(num);
    }

    display();
    return 0;

}