#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;
}

