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 .

  • Vote: I like it
  • +57
  • Vote: I do not like it

»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

This, and this.

Enjoy solving!

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

1977C - Nikita and LCM beats them all

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

1968F - Equal XOR Segments the best problem as i ever seen

→ Reply
»
2 months ago, # |
  Vote: I like it +1 Vote: I do not like it

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

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

1800: C. A Mist of Florescence

Hint(not really)
→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

this and this

→ Reply
»
2 months ago, # |
← Rev. 2   Vote: I like it +1 Vote: I do not like it

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
→ Reply
  • »
    »
    2 months ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    thanks for sharing

    → Reply
  • »
    »
    2 months ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    I like your list. These are some questions that can be implemented within 10 minutes, if one gets the logic right.

    → Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

2004D - Colored Portals

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Enjoy tle 1771C - Hossam and Trainees

→ Reply
»
2 months ago, # |
← Rev. 2   Vote: I like it 0 Vote: I do not like it

1083A - The Fair Nut and the Best Path

1151D - Stas and the Queue at the Buffet

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

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.

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Nice idea for practice

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

G. Path Queries

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

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.

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

https://atcoder.jp/contests/abc370/tasks/abc370_e

https://codeforces.net/contest/1793/problem/D

https://codeforces.net/contest/1741/problem/E

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

https://codeforces.net/contest/1971/problem/G https://codeforces.net/contest/1850/problem/G https://codeforces.net/contest/1971/problem/E https://codeforces.net/problemset/problem/1932/E https://codeforces.net/problemset/problem/1926/E https://codeforces.net/problemset/problem/1907/E

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

1600 1800 1600

Spoiler
→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

I think this one is a nice dp. https://codeforces.net/contest/446/problem/A

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

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.

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

thanks for this post <3

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Literally, 1937C - Bitwise Operation Wizard is the best one I've ever seen.

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

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

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Fox and names

→ Reply
»
2 months ago, # |
← Rev. 2   Vote: I like it 0 Vote: I do not like it

1777C - Quiz Master

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

this aaaand this one

→ Reply
»
2 months ago, # |
  Vote: I like it 0 Vote: I do not like it

the best problem I've ever solved on codeforces.

https://codeforces.net/contest/1284/problem/C

→ Reply
»
7 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

Here you go https://codeforces.net/contest/1658/problem/D1

→ Reply
»
7 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

this

→ Reply
»
7 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

Found this interesting. enjoy

→ Reply
»
7 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

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

→ Reply
»
7 weeks ago, # |
← Rev. 2   Vote: I like it 0 Vote: I do not like it

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

→ Reply
»
7 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

some good problems are shared

→ Reply
»
7 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

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

→ Reply
»
7 weeks ago, # |
← Rev. 3   Vote: I like it 0 Vote: I do not like it

https://codeforces.net/problemset/problem/993/A geometry problem

→ Reply
»
7 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

Gotta be 2013D - Минимизировать разницу

→ Reply
»
7 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

https://codeforces.net/problemset/problem/1969/C

A fabulous DP problem.

→ Reply
»
7 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

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

→ Reply
»
7 weeks ago, # |
← Rev. 2   Vote: I like it 0 Vote: I do not like it

1995B2 - Букет (сложная версия)

→ Reply
»
6 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

Probablity

→ Reply
»
6 weeks ago, # |
← Rev. 2   Vote: I like it 0 Vote: I do not like it

https://codeforces.net/contest/1884/problem/C best observation problem i have seen

→ Reply
»
6 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

Nice DP!

https://codeforces.net/problemset/problem/2005/C

→ Reply
»
6 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

this

→ Reply
»
6 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

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

→ Reply