#include <stdio.h>
#include <stdlib.h>

struct node{
  struct node *right;
  struct node *left;
  struct node *parent;
  int key;
};
typedef struct node * Node;
#define NIL NULL

Node root;

Node treeSearch(Node u, int k){
    while (u != NIL && k != u->key)
    {
        if (k < u->key) u = u->left;
        else u = u->right;
    }
    
    return u;
}


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

  z = malloc(sizeof(struct 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;
  char com[20];
  scanf("%d", &n);

  for ( i = 0; i < n; i++ ){
    scanf("%s", com);
    if ( com[0] == 'f' ){
      scanf("%d", &x);
      Node t = treeSearch(root, x);
      if ( t != NIL ) printf("yes\n");
      else printf("no\n");
    } else if ( com[0] == 'i' ){
      scanf("%d", &x);
      insert(x);
    } else if ( com[0] == 'p' ){
      inorder(root);
      printf("\n");
      preorder(root);
      printf("\n");
    } 
  }

  return 0;
}
