Fibonacciness
https://vjudge.net/problem/CodeForces-2060A;
Farmer John’s Card Game
https://vjudge.net/problem/CodeForces-2060B;
Game of Mathletes
https://vjudge.net/problem/CodeForces-2060C;
Subtract Min Sort
https://vjudge.net/problem/CodeForces-2060D;
Graph Composition
https://vjudge.net/problem/CodeForces-2060E;
Minimal Coprime
https://vjudge.net/problem/CodeForces-2063A;