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

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

struct Node *root,*NIL;

struct Node *find(struct 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){
  struct Node *x=root,*y=NIL,*z;

  z=(struct Node *)malloc(sizeof(struct Node));
  z->key=k;
  z->right=NIL;
  z->left=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(struct Node *u){
  if(u==NIL)return;
  inorder(u->left);
  printf(" %d",u->key);
  inorder(u->right);
}

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

int main(){

  int n,i,x;
  char com[100];
  char str1[]="insert";
  char str2[]="print";
  char str3[]="find";

  scanf("%d",&n);

  for(i=0;i<n;i++){
    scanf("%s",com);
    if(strcmp(com,str3)==0){
      scanf("%d",&x);
      struct Node *t=find(root,x);
      if(t!=NIL)printf("yes\n");
      else printf("no\n");
    }
    else if(strcmp(com,str1)==0){
      scanf("%d",&x);
      insert(x);
    }
    else if(strcmp(com,str2)==0){
      inorder(root);
      printf("\n");
      preorder(root);
      printf("\n");
    }
  }

  return 0;

}
