1613

import java.util.Scanner;

/**
 * Created by entsmv on 29.03.2017.
 */
public class Solution {


    private static void Remove(int id) {

    }

    private static void Find(int id) {

    }

    private static void Add(int idp, int idc) {

    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        StringBuilder answer;
        for (int i = 0; i < n; i++) {
            String s = scanner.next();
            if (s.equals("ADD")) {
                int idp = scanner.nextInt();
                int idc = scanner.nextInt();

                Add(idp, idc);
            }
            else if (s.equals("FIND")) {
                int id = scanner.nextInt();
                Find(id);
            }
            else {
                int id = scanner.nextInt();
                Remove(id);
            }
        }
    }
    public class Edge {
        int x;
        int deep = 0;
        Edge left = null, right = null;

        public Edge(int x, int deep, Edge left, Edge right) {
            this.x = x;
            this.deep = deep;
            this.left = left;
            this.right = right;
        }

        public int getX() {
            return x;
        }

        public void setX(int x) {
            this.x = x;
        }

        public int getDeep() {
            return deep;
        }

        public void setDeep(int deep) {
            this.deep = deep;
        }

        public Edge getLeft() {
            return left;
        }

        public void setLeft(Edge left) {
            this.left = left;
        }

        public Edge getRight() {
            return right;
        }

        public void setRight(Edge right) {
            this.right = right;
        }
    }
}