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

struct BINNODE {
	int key;
	BINNODE *parent;
	BINNODE *left;
	BINNODE *right;

	BINNODE (int k) {
		key=k;
		parent=nullptr;
		left=nullptr;
		right=nullptr;
	}
};

void preorderwalk(BINNODE* root) {
	if(root==nullptr) return;
	printf(" %d",root->key);
	preorderwalk(root->left);
	preorderwalk(root->right);
	return;
}

void inorderwalk(BINNODE* root) {
	if(root==nullptr) return;
	inorderwalk(root->left);
	printf(" %d",root->key);
	inorderwalk(root->right);
	return;
}

bool findnode(int v, BINNODE* root) {
	if(root == nullptr) return false;
	if(root->key ==v ) return true;
	return (v< root->key)?findnode(v,root->left) : findnode(v,root->right);
}

int main() {
	int m,v;
	int i;
	string cmd;
	BINNODE* root=nullptr;
	BINNODE* x;
	BINNODE* y;
	BINNODE* z;
	cin >> m;
	for(i=0; i<m; ++i) {
		cin >> cmd;
		if(cmd=="find") {
			cin >> v;
			printf(findnode(v,root) ? "yes\n" : "no\n");
		} else if(cmd=="insert") {
			cin >> v;
			z=new BINNODE(v);
			y=nullptr;
			x=root;
			while(x!=nullptr) {
				y=x;
				if (z->key < x->key) {
					x=x->left;
				} else {
					x=x->right;
				}
			}
			z->parent = y;

			if(y==nullptr) {
				root=z;
			} else if(z->key < y->key) {
				y->left = z;
			} else {
				y->right = z;
			}
		} else {
			inorderwalk(root);
			printf("\n");
			preorderwalk(root);
			printf("\n");
		}
	}
	return 0;
}