sudheerreddy14's blog

Drop your favourite problems in the range [1500-1800]

By sudheerreddy14, history, 2 months ago, In English

Share your favourite I will try solving them .

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2 months ago, # |
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This, and this.

Enjoy solving!

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2 months ago, # |
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1977C - Nikita and LCM beats them all

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2 months ago, # |
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1968F - Equal XOR Segments the best problem as i ever seen

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2 months ago, # |
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this one is out of range (1900) 1714F - Build a Tree and That Is It.

these are in range:

1528A - Parsa's Humongous Tree

1056D - Decorate Apple Tree

103B - Cthulhu

2001C - Guess The Tree

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2 months ago, # |
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1800: C. A Mist of Florescence

Hint(not really)
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2 months ago, # |
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this and this

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2 months ago, # |
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This is my personal list of fav problems, sorry but all problems are from 2000-2400 rating range but nonetheless they are great.

General Lesson

1993D - Med-imize

Lesson

1992G - Ultra-Meow

Lesson

2002D2 - DFS Checker (Hard Version)

Lesson

2002E - Cosmic Rays

Lesson

Find Kth smallest pair distance in an array: Leetcode HARD (but simple bs actually)

Lesson

2000G - Call During the Journey

Lesson:

2008H - Sakurako's Test

Lesson
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    2 months ago, # ^ |
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    thanks for sharing

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    2 months ago, # ^ |
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    I like your list. These are some questions that can be implemented within 10 minutes, if one gets the logic right.

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2 months ago, # |
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2004D - Colored Portals

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2 months ago, # |
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Enjoy tle 1771C - Hossam and Trainees

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1083A - The Fair Nut and the Best Path

1151D - Stas and the Queue at the Buffet

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2 months ago, # |
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1983D - Swap Dilemma 1851F - Lisa and the Martians 1872E - Data Structures Fan 1556D - Take a Guess 2001C - Guess The Tree 816B - Karen and Coffee 2002D1 - DFS Checker (Easy Version) 1791F - Range Update Point Query 1999F - Expected Median 1997D - Maximize the Root I hope you enjoy these.

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2 months ago, # |
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Nice idea for practice

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2 months ago, # |
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G. Path Queries

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1950E - Nearly Shortest Repeating Substring, 1999F - Expected Median

Also out of range problems: 2000H - Ksyusha and the Loaded Set, 446C - DZY Loves Fibonacci Numbers, 1155E - Guess the Root.

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2 months ago, # |
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https://atcoder.jp/contests/abc370/tasks/abc370_e

https://mirror.codeforces.com/contest/1793/problem/D

https://mirror.codeforces.com/contest/1741/problem/E

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2 months ago, # |
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https://mirror.codeforces.com/contest/1971/problem/G https://mirror.codeforces.com/contest/1850/problem/G https://mirror.codeforces.com/contest/1971/problem/E https://mirror.codeforces.com/problemset/problem/1932/E https://mirror.codeforces.com/problemset/problem/1926/E https://mirror.codeforces.com/problemset/problem/1907/E

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2 months ago, # |
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1600 1800 1600

Spoiler
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2 months ago, # |
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I think this one is a nice dp. https://mirror.codeforces.com/contest/446/problem/A

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Sorry, this one is out of the range, but It's one of the high quality problems that you would really enjoy thinking and reaching the solution all by yourself.

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2 months ago, # |
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thanks for this post <3

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2 months ago, # |
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Literally, 1937C - Bitwise Operation Wizard is the best one I've ever seen.

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1985G - D-Function. I read the formula they proved in the editorial after i solved it by generating some of the first numbers and learn the rules

And yes it works :) solving this problem is probably the best advancement i've made

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2 months ago, # |
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Fox and names

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2 months ago, # |
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1777C - Quiz Master

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this aaaand this one

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the best problem I've ever solved on codeforces.

https://mirror.codeforces.com/contest/1284/problem/C

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2 months ago, # |
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Here you go https://mirror.codeforces.com/contest/1658/problem/D1

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2 months ago, # |
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this

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Found this interesting. enjoy

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I would recommend looking for problems in this range on C2Ladders https://c2-ladders-juol.onrender.com

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1879D - Sum of XOR Functions
Found it very interesting and educational.

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some good problems are shared

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This one is wonderful https://mirror.codeforces.com/contest/1851/problem/F

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https://mirror.codeforces.com/problemset/problem/993/A geometry problem

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Gotta be 2013D - Минимизировать разницу

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https://mirror.codeforces.com/problemset/problem/1969/C

A fabulous DP problem.

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This one and This one both of them are really good the first is of DP and the second one is interactive

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1995B2 - Bouquet (Hard Version)

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7 weeks ago, # |
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Probablity

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7 weeks ago, # |
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https://mirror.codeforces.com/contest/1884/problem/C best observation problem i have seen

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7 weeks ago, # |
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Nice DP!

https://mirror.codeforces.com/problemset/problem/2005/C

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7 weeks ago, # |
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this

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7 weeks ago, # |
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an array is considered valid if there is no sovereign longer than B where all the elements are identical additionally the array can contains only integer from the range 1 to C determine the number of valid array of length a

Please solved this

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