#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 treeMinimum(Node x){
while(x->left!=NIL){
x=x->left;
}
return x;
}

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);
}

}

Node treeSuccessor(Node x){
Node y;  
if(x->right!=NIL){
return treeMinimum(x->right);
}
y=x->parent;
while(y!=NIL && x==y->right){
x=y;
y=y->parent;
}
return y;
}

void treeDelete(Node z){
Node y; // node to be deleted
Node x; // child of y
if(z->left==NIL || z->right==NIL){
y=z;
}
 else{
y=treeSuccessor(z);
}
if(y->left!=NIL){
x=y->left;
}
 else{
x=y->right;
}
if(x!=NIL){
x->parent=y->parent;
}
if(y->parent==NIL){
root=x;
}
 else if(y==y->parent->left){
y->parent->left=x;
}
 else{
y->parent->right=x;
}
if(y!=z){
z->key=y->key;
}


}

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");
} else if ( com[0] == 'd' ){
scanf("%d", &x);

}
}

return 0;
}