package main

import . "fmt"

func main() {
	var n int
	Scan(&n)
	
	a:=make([][]int,n)
	for i:=range a {
		a[i]=make([]int,i+1)
		for j:=range a[i] {
			Scan(&a[i][j])
		}
	}
	for i,v:=range a[n-1] {
		if i>0 {
			Print(" ")
		}
		Print(v)
	}
	Println()
}