#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdbool.h>
#include <math.h>

#define SIZE 100

bool jeKopa(int i, int inputNum[SIZE]);
void vypisovac(int vypis[SIZE], int input[SIZE], int size);
int ownPow(int base, int power);
int input(char string[100], int numbers[100]);
int main(){
    char stringNum[100];
    int inputNum[100] = {0}, i = 0;
    fgets(stringNum,SIZE,stdin);
    i = input(stringNum,inputNum) -1;
    for (int j = 0; j < SIZE; j++){if(inputNum[j]<0-1){i++;}}
    int vypis[100];
    if(jeKopa(i,inputNum)){
        printf("Je to taka kopa:");
        //int temp = 0, count = 0;
        
        vypis[0] = 0;
        for (int j = 0; j+1 < i; j++)
        {
            if (2*j+1 >= i)
            {
                break;
            }
            vypis[j+1] = 2*j+1;
            vypis[i-(j+1)] = 2*j+2;
        }
        if (i%2==0)
        {
            vypis[i/2] = inputNum[i-1];
        }
           
    }
    printf("\n");
    vypisovac(vypis,inputNum,i);  
    return 0;
}

bool jeKopa(int i, int inputNum[SIZE]){
    for (int j = (i-1)/2; j >= 0; j--)
    {
        int l =2*i+1 , r = 2*i+2;
        if (l>=i)
        {
            continue;
        }
        if ((inputNum[j]>inputNum[l]) || (inputNum[j]>inputNum[r]))
        {
            printf("Nieje kopa");
            return 0;
        }
        
    }
    
    return 1;
}
void vypisovac(int vypis[SIZE], int input[SIZE], int size){
    int counter = 0, count = ownPow(2,0), space = 0, i = 0;
    for (i = 0; i < size; i++)
    {
        if (counter>=count && (i)<=(size/2))
        {
            count = ownPow(2,i)/2;
            counter = 0;
            space++;
        }
        else if (counter>=count && i>(size/2) || vypis[i]<count-1)
        {
            count = ownPow(2,size-i-1)/2;
            counter = 0;
            space--;
        }
        
        counter++;
        for (int k = 0; k < space; k++)
        {
            printf(" ");
        }
        printf("%d\n",input[vypis[(int)i]]);
    }
}
int ownPow(int base, int power){
    int result = 0;
    if (power>0)
    {
        result = 1;
    }
    else{
        return 1;
    }
    
    for (int i = 0; i<power; i++)
    {
        result = result * base;
    }
    return result;
}
int input(char string[100], int numbers[100]){
    int j = 0;
    for (int i = 0; i < strlen(string); i++)
    {
        if (isdigit(string[i])){
            numbers[j] = numbers[j]*10 + string[i]-'0';
        }
        else{
            j++;
        }
    }
    return j;
}