Codeforces-solutions/TODO.md

TODO list

List of unsolved problems that I should try again later. Putting everything here to clean my tabs

Contents

• [Codeforces](#TODO list#Codeforces) * [Divs](#TODO list#Codeforces#Divs) * [Educational](#TODO list#Codeforces#Divs#Educational) * [Div 1/2](#TODO list#Codeforces#Divs#Div 1/2) * [Div 4](#TODO list#Codeforces#Divs#Div 4) * [GYM](#TODO list#Codeforces#GYM) * [ICPC Brazil first phase](#TODO list#Codeforces#GYM#ICPC Brazil first phase)
• [Atcoder](#TODO list#Atcoder)

Codeforces

Problem from codeforces.

Divs

Official divs from codeforces

Educational

1. F. Frogs and Mosquitoes

   I have no clue where to even start.

2. E. Water Taps

   I have an idea, but it's really annoying to solve it.

3. F. Fibonacci String Subsequences

   Obviously DP, but not sure how to do it...

4. F. Imbalance Value of Tree

   Tree problem, looks interesting.

5. F. Clear The Matrix

   DP with optimization?

Div 1/2

1. D. Division Versus Addition

   The idea is simple, but I have to think through it better.

2. D2. Inversion Graph Coloring

   DP with optimization.

3. E. Yet Another MEX Problem

   Maybe MEX with two pointers?

4. D. A Cruel Segment's Thesis

   Looks greedy.

5. F. Flint and Steel

   I tried this a long time ago, don't remember what it's about, just remembered that I tried a greedy solution and it didn't work.

Div 3

1. G. Cry Me a River

   Graph problem, don't remember the details.

Div 4

1. F. Gravity Falls

   I barely read it, not sure were I found it either, but looks pretty easy.

GYM

Gym from simulations or contests that I did

ICPC Brazil first phase

1. D. Dominoes

   If I did this one, I would have passed into second phase, must try to solve it ASAP.

ICPC Northwestern European Regional

Link because it has no problem page in gym.

1. L. Last Guess

   I think I can solve it with flow.

USP Try-outs

1. B. Tuk-Tuk Express

   I have NO clue why my code keeps getting WA, awful implementation problem.

2. J. Apep, the Lord of Chaos

   I don't remember what the problem was about, I just know that I tried it before.

Atcoder

1. F. Operate K

   DP with optimization.