sudheerreddy14's blog

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

By sudheerreddy14, history, 3 months ago, In English

Share your favourite I will try solving them .

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3 months ago, # |
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This, and this.

Enjoy solving!

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3 months ago, # |
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1977C - Никита и ТЧ beats them all

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1968F - Отрезки с равным XOR the best problem as i ever seen

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3 months ago, # |
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this one is out of range (1900) 1714F - Построй дерево и точка.

these are in range:

1528A - Огромное дерево Parsa

1056D - Укрась яблоню

103B - Ктулху

2001C - Угадайте дерево

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

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

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3 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 - Медизация

Lesson

1992G - Ультра-мяу

Lesson

2002D2 - Проверка DFS (сложная версия)

Lesson

2002E - Космические лучи

Lesson

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

Lesson

2000G - Звонок во время пути

Lesson:

2008H - Тест Сакурако

Lesson
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    3 months ago, # ^ |
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    thanks for sharing

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    3 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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2004D - Цветные порталы

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Enjoy tle 1771C - Хоссам и ученики

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1083A - Орехус и оптимальный путь

1151D - Стас и очередь в буфет

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1983D - Дилемма обмена 1851F - Лиза и марсиане 1872E - Фанат структур данных 1556D - Попробуй угадай 2001C - Угадайте дерево 816B - Карен и кофе 2002D1 - Проверка DFS (лёгкая версия) 1791F - Range Update Point Query 1999F - Ожидаемая медиана 1997D - Максимизация корня I hope you enjoy these.

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3 months ago, # |
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Nice idea for practice

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G. Path Queries

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1950E - Почти самая короткая повторяющаяся подстрока, 1999F - Ожидаемая медиана

Also out of range problems: 2000H - Ксюша и загруженное множество, 446C - DZY любит числа Фибоначчи, 1155E - Угадай корень.

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

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

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

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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

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3 months ago, # |
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1600 1800 1600

Spoiler
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I think this one is a nice dp. https://codeforces.net/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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3 months ago, # |
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thanks for this post <3

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Literally, 1937C - Побитовая магия is the best one I've ever seen.

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1985G - D-Функция. 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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3 months ago, # |
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Fox and names

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1777C - Мастер тестов

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this aaaand this one

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the best problem I've ever solved on codeforces.

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

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3 months ago, # |
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Here you go https://codeforces.net/contest/1658/problem/D1

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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 - Сумма функций XOR
Found it very interesting and educational.

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some good problems are shared

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

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

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Gotta be 2013D - Минимизировать разницу

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https://codeforces.net/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 - Букет (сложная версия)

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Probablity

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

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Nice DP!

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

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this

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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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