#include<stdio.h>
#include<stdlib.h>
typedef struct Node{
    int data;
    struct Node *next;
}node;
 node *head=NULL,*tail=NULL;
 void create(int num){
     node *newnode=(node*)malloc(1*sizeof(node));
     newnode->data=num;
     newnode->next=NULL;
        tail->next=newnode;
        tail=newnode;
    }

void inorder(){
    if(head==NULL){
        return;
    }
    inorder(root->left);
    printf("%d ",root->data);
    inorder(root->right);
}
else{
printf("\n");
}
int main(){
     int n,i;
     int arr[n];
     scanf("%d",&n);
     for(i=5;i>=30;i=i+5){
     scanf("%d",&arr[i]);
     printf("%d ",arr[i]);
     }
     printf("\n");
     return 0;
 }