yesterday

kAmazing Numbers

data structures
binary search
implementation
two pointers

Sept. 19, 2020

Sage's Birthday (easy version)

binary search
sortings
greedy
constructive algorithms

Sept. 19, 2020

Sage's Birthday (hard version)

binary search
sortings
greedy
two pointers
brute force
constructive algorithms

Sept. 19, 2020

Rain of Fire

binary search
graphs
dsu
dfs and similar
implementation
data structures

Sept. 19, 2020

Q3. Make Sum Divisible by P

array
binary search

Sept. 14, 2020

Expected Damage

binary search
probabilities
combinatorics

Sept. 6, 2020

Fixed Point Removal

data structures
binary search
greedy
two pointers
constructive algorithms

Sept. 6, 2020

Fixed Point Removal

data structures
sortings
binary search

Sept. 5, 2020

Q3. Shortest Subarray to be Removed to Make Array Sorted

array
binary search

Sept. 4, 2020

Two Platforms

two pointers
dp
sortings
binary search

Aug. 28, 2020

The Potion of Great Power

*special
binary search
data structures
graphs
interactive
sortings
two pointers
2sat

Aug. 23, 2020

Q3. Find Latest Group of Size M

binary search

Aug. 21, 2020

Reverse and Swap

binary search
bitmasks
data structures

Aug. 16, 2020

Omkar and Landslide

binary search
constructive algorithms
greedy
math
data structures

Aug. 16, 2020

Q3. Magnetic Force Between Two Balls

array
binary search

Aug. 14, 2020

Two Types of Spells

data structures
greedy
math
binary search
implementation
sortings

Aug. 14, 2020

Controversial Rounds

dp
two pointers
binary search
data structures
greedy

Aug. 12, 2020

Boboniu and String

binary search
geometry
ternary search

Aug. 12, 2020

Boboniu and String

binary search
geometry
strings

Aug. 5, 2020

Weights Division (hard version)

dfs and similar
greedy
trees
two pointers
binary search
sortings

July 23, 2020

Graph

*special
dfs and similar
dp
math
binary search
ternary search

July 22, 2020

Colors

*special
interactive
binary search
constructive algorithms

July 19, 2020

Dubious Cyrpto

math
brute force
binary search
number theory

July 19, 2020

Choosing flowers

sortings
binary search
greedy
two pointers
brute force
data structures
dfs and similar
dp

July 19, 2020

New Passenger Trams

sortings
brute force
data structures
two pointers
binary search

July 19, 2020

Chess Strikes Back (easy version)

data structures
binary search

July 19, 2020

Q4. Find a Value of a Mysterious Function Closest to Target

binary search
bit manipulation
segment tree

July 11, 2020

Omkar and Modes

interactive
binary search
divide and conquer

July 1, 2020

E1. Asterism (Easy Version)

combinatorics
number theory
sortings
math
binary search
brute force

July 1, 2020

E2. Asterism (Hard Version)

number theory
sortings
binary search
math
combinatorics
dp

June 25, 2020

F. Network Coverage

binary search
constructive algorithms
data structures
greedy

June 14, 2020

Q3. Minimum Number of Days to Make m Bouquets

array
binary search

March 15, 2020

Q3. Balance a Binary Search Tree

binary search tree

March 7, 2020

Q4. Maximum Sum BST in Binary Tree

dynamic programming
binary search tree

Feb. 16, 2020

Q1. Count Negative Numbers in a Sorted Matrix

array
binary search

Feb. 2, 2020

Q1. The K Weakest Rows in a Matrix

array
binary search

Dec. 28, 2019

Q2. Sum of Mutated Array Closest to Target

array
binary search

Dec. 15, 2019

Q3. Maximum Side Length of a Square with Sum Less than or Equal to Threshold

array
binary search

Dec. 8, 2019

Q3. Find the Smallest Divisor Given a Threshold

binary search

Oct. 27, 2019

Q1. Find Positive Integer Solution for a Given Equation

math
binary search

Oct. 20, 2019

Q4. Maximum Profit in Job Scheduling

binary search
dynamic programming
sort

Oct. 19, 2019

Q4. Divide Chocolate

binary search
greedy

Oct. 5, 2019

Q2. Two Sum BSTs

binary search tree

Sept. 22, 2019

Q2. Ugly Number III

math
binary search

Sept. 21, 2019

Q3. Find Smallest Common Element in All Rows

hash table
binary search

Sept. 7, 2019

Q3. Shortest Distance to Target Color

binary search

Aug. 11, 2019

Q4. Online Majority Element In Subarray

array
binary search
segment tree

Aug. 10, 2019

Q1. Check If a Number Is Majority Element in a Sorted Array

array
binary search

July 7, 2019

Q4. Maximum Nesting Depth of Two Valid Parentheses Strings

binary search
greedy

June 23, 2019

Q3. Find in Mountain Array

binary search

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