#include <stdio.h>
#include <stdlib.h>
#define MAX 20
int main() {
//int l = i * 2 + 1;
//int r = i * 2 + 2;
    int i,n;
    int *a = calloc(MAX, sizeof(int));
    for (i = 0; i < MAX; i++) {
        scanf("%d", &a[i]);
        if(a[i]!=0){
            n++;
        }
    }
    //m = buildmaxheap(a, n);
    printf("Je to taka kopa:\n");
    for (i = 0; i < n; i++) {
        printf("%d\n", a[i]);
        if(a[i+1]!=0){//&&a[i+1]>a[i]
            printf(" ");
            if(a[i+2]!=0)
            printf(" ");
        }
    }

return 0;
}