#include <iostream>
#include <cstdio>
#include <vector>
#include <list>
#include <algorithm>
#include <cmath>
#include <stack>
#include <map>
using namespace std;
 
#define REP(i,n) for(int (i)=0; (i)<(n); (i)++)
#define FOR(i,a,b) for(int (i)=(a); (i)<(b); (i)++)
#define PUSH(n,v) for(int i=0; i<(n); i++) {int j; cin >> j; v.push_back(j);}
#define ALL(v) v.begin(), v.end()
 
struct Node3 {
    int key;
    Node3 *left;
    Node3 *right;
    Node3 *parent;
public:
    Node3(Node3 *l, Node3 *r, Node3 *p, int k) : left(l), right(r), parent(p), key(k) {};
};
 
class BinarySearchTree3 {
private:
    Node3 *root;
    void preorder(Node3 node);
    void inorder(Node3 node);
    Node3* inorderItr(Node3* node);
    Node3* getNode(int n);
    Node3* inorderNext(Node3 node);
public:
    void insert(int n);
    BinarySearchTree3() {root = 0;}
    void print() {
        inorder(*root);
        cout << endl;
        preorder(*root);
        cout << endl;
    }
    bool find(int n);
    void erase(int n);
};
 
void BinarySearchTree3::preorder(Node3 node) {
    cout << " " << node.key;
    if (node.left != 0) {
        preorder(*node.left);
    }
    if (node.right != 0) {
        preorder(*node.right);
    }
}
 
void BinarySearchTree3::inorder(Node3 node) {
    if (node.left != 0) {
        inorder(*node.left);
    }
    cout << " " << node.key;
    if (node.right != 0) {
        inorder(*node.right);
    }
}
 
Node3* BinarySearchTree3::inorderItr(Node3* node) {
    if (node->left != 0) return inorderItr(node->left);
    return node;
}
 
Node3* BinarySearchTree3::inorderNext(Node3 node) {
    if (node.right == 0) return node.parent;
    else return inorderItr(node.right);
}
 
void BinarySearchTree3::insert(int n) {
    Node3 *z = new Node3(0,0,0,n);
    Node3 *y = 0;
    Node3 *x = root;
    while (x != 0) {
        y = x;
        if (z->key < x->key) {
            x = x->left;
        }else {
            x = x->right;
        }
    }
    z -> parent = y;
    if (y == 0) {
        root = z;
    }else if (z->key < y->key) {
        y->left = z;
    }else {
        y->right = z;
    }
}
 
bool BinarySearchTree3::find(int n) {
    Node3 *p = root;
    while(p != 0) {
        if (p->key < n) {
            p = p->right;
        }else if (p->key == n) {
            return true;
        }else {
            p = p->left;
        }
    }
    return false;
}
 
Node3* BinarySearchTree3::getNode(int n) {
    Node3 *p = root;
    while(p != 0) {
        if (p->key < n) {
            p = p->right;
        }else if (p->key == n) {
            return p;
        }else {
            p = p->left;
        }
    }
    return 0;
}
 
void BinarySearchTree3::erase(int n) {
    Node3 *deleted = getNode(n);
    if (deleted->left == 0 && deleted->right == 0) {
        Node3 *parent = deleted->parent;
        if (parent->key < deleted->key) {
            parent->right = 0;
        }else {
            parent->left = 0;
        }
        deleted = 0;
    }else if (deleted->left == 0) { // only has right child
        Node3 *parent = deleted->parent;
        Node3 *child = deleted->right;
        if (parent->key < deleted->key) {
            parent->right = child;
            child->parent = parent;
        }else {
            parent->left = child;
            child->parent = parent;
        }
        deleted = 0;
    }else if (deleted->right == 0) { // only has left child
        Node3 *parent = deleted->parent;
        Node3 *child = deleted->left;
        if (parent->key < deleted->key) {
            parent->right = child;
            child->parent = parent;
        }else {
            parent->left = child;
            child->parent = parent;
        }
        deleted = 0;
    }else { // has both children
        Node3 *next = inorderNext(*deleted);
        int k = next->key;
        erase(k);
        deleted->key = k;
    }
}
 
int main() {
    int n;
    cin >> n;
    string s;
    BinarySearchTree3 tree;
    REP(i,n) {
        cin >> s;
        if (s[0] == 'i') {
            int j;
            cin >> j;
            tree.insert(j);
        }else if (s[0] == 'p'){
            tree.print();
        }else if (s[0] == 'f'){
            int j;
            cin >> j;
            if (tree.find((j))) cout << "yes" << endl;
            else cout << "no" << endl;
        }else {
            int j;
            cin >> j;
            tree.erase(j);
        }
    }
    return 0;
}

Measured memory_bytes: 21856