Practice

Problem 1

Modify the stack data structure to allow finding the smallest element with O($1$) complexity.

Problem 2

A TC Clinic is currently serving a queue of patients. Every patient has an id and an urgency level that are represented by a number. Make a program to simulate how the queue goes on that clinic!

Input

The first line is Q, the amount of queries. Every query can consist of:

• MASUK id x - id is the id of a patient and x is the level of urgency.
• LAYANI - print the id of the patient that is currently being attended to.

Output

For every LAYANI query, print the id of the patient that is currently being attended to. If there are no more patients in queue, print "HORE".

Input Example

9
MASUK 1 15
MASUK 3 2
MASUK 2 6
MASUK 7 15
LAYANI
LAYANI
MASUK 8 100
LAYANI
LAYANI

Output Example

1
7
8
2

Problem 3

Modify the given Stack, Queue, Deque, and Priority Queue so that they can store a string with maximum of 100 characters.

Bonus Problem

Codeforces - Move Brackets