Competitive Programmer

chinese remainder theorem, math

Card Exchange

chinese remainder theorem, fft, flows, greedy, string suffix structures

Engineer Artem

2-sat, chinese remainder theorem, constructive algorithms, fft, flows

Koxia and Number Theory

brute force, chinese remainder theorem, math, number theory

Remainders Game

chinese remainder theorem, math, number theory

GCD Guess

bitmasks, chinese remainder theorem, constructive algorithms, games, interactive, math, number theory

ConstructOR

bitmasks, chinese remainder theorem, combinatorics, constructive algorithms, math, number theory

Two chandeliers

binary search, brute force, chinese remainder theorem, math, number theory

Power Tower

chinese remainder theorem, math, number theory

Congruence Equation

chinese remainder theorem, math, number theory

Decypher the String

bitmasks, chinese remainder theorem, constructive algorithms, interactive, math

Nikita and Order Statistics

chinese remainder theorem, fft, math

GCD Table

chinese remainder theorem, math, number theory

Omkar and Akmar

chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures

Nephren Runs a Cinema

chinese remainder theorem, combinatorics, math, number theory

Cyclic Cipher

chinese remainder theorem, data structures, implementation, number theory, two pointers

Epic Convolution

chinese remainder theorem, fft, math, number theory