All Tracks Data Structures Advanced Data Structures Segment Trees Problem

New Queries
Tag(s):

Easy-Medium

Problem
Editorial
Analytics

You have an array $$ A $$ consisting of $$ N $$ integers and is 1 based index. You have to perform q queries on the given array. Queries can be of 3 types.

$$1\; i\; X$$ : Update the array value at ith position to X i.e. set $$ A[i] = X $$
$$2\; L\; R$$ : Among all the even numbers from position $$L $$ to $$ R $$ find the largest even number
$$3 \;L \;R$$ : Among all the odd numbers from position $$ L $$ to $$ R $$ find the largest odd number

Constraints
$$ 1 \le N \le 10^5 $$
$$ 1 \le L \le R \le N $$
$$ 1 \le i \le N $$
$$ 0 \le X \le 10^{18} $$
$$ 1 \le Q \le 10^5 $$

Input
First line contains $$ N $$ and $$ Q $$ as input. Next line contains $$N$$ space separated integers denoting $$ A[i] $$ . Next $$ Q $$ lines contain $$ Q $$ queries of any of the three above types
Output
Print result of each query of type 2 and 3 in a new line

SAMPLE INPUT
5 5
1 2 3 4 5
2 1 5
2 1 3
3 1 4
3 2 2
3 1 5
SAMPLE OUTPUT
4
2
3
DNE
5
Time Limit: 2.0 sec(s) for each input file.
Memory Limit: 256 MB
Source Limit: 1024 KB
Marking Scheme: Marks are awarded when all the testcases pass.
Allowed Languages: C, C++, C++14, Clojure, C#, D, Erlang, F#, Go, Groovy, Haskell, Java, Java 8, JavaScript(Rhino), JavaScript(Node.js), Julia, Kotlin, Lisp, Lisp (SBCL), Lua, Objective-C, OCaml, Octave, Pascal, Perl, PHP, Python, Python 3, R(RScript), Racket, Ruby, Rust, Scala, Swift, Visual Basic

CODE EDITOR

Initializing Code Editor...
Your Rating:

Contributor

This Problem was Asked in

IIIT Jabalpur

Challenge Name

CodeRing - III

OTHER PROBLEMS OF THIS CHALLENGE
Notifications
View All Notifications