#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){
  if(u==NIL || k==u->key){
    return u;
  }
  if(k < u->key){
    return treeSearch(u->left,k);
  }
  else{
    return treeSearch(u->right,k);
  }
}

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