#define _CRT_SECURE_NO_WARNINGS
#include<cstdio>
#include<cstdlib>
#include<string>
#include<iostream>
using namespace std;

struct Node {
	int key;
	Node*right, *left, *parent;
};

Node *root, *NIL;

void insert(int k) {
	Node *y = NIL;
	Node *x = root;
	Node *z;

	z = (Node *)malloc(sizeof(Node));
	z->key = k;
	z->left = NIL;
	z->right = NIL;

	while (x != NIL) {
		y = x;
		if (z->key < x->key) {
			x=x->left;
		}
		else {
			x = x->right;
		}
	}

	z->parent = y;
	if (y == NIL) {
		root = z;
	}
	else {
		if (z->key < y->key) {
			y->left = z;
		}
		else {
			y->right = z;
		}
	}
}

void inorder(Node *u) {
	if (u == NIL)return;
	inorder(u->left);
	printf(" %d", u->key);
	inorder(u->right);
}
void preorder(Node *u) {
	if (u == NIL)return;
	printf(" %d", u->key);
	preorder(u->left);
	preorder(u->right);
}

int main() {
	int n, i, x;
	string com;

	scanf("%d", &n);

	for (i = 0; i < n; i++) {
		cin >> com;
		if (com == "insert") {
			scanf("%d", &x);
			insert(x);
		}
		else if (com == "print") {
			inorder(root);
			printf("\n");
			preorder(root);
			printf("\n");
		}
	}

	return 0;
}