Problem B1: Watering Well - Chapter 1
Problem A2: Consecutive Cuts - Chapter 2
Problem A1: Consecutive Cuts - Chapter 1
D - Multiply and Rotate
E - Rook Path
E - MST + 1
F - Jealous Two
F - Reordering
Codeforces Round #496 (Div. 3) D. Polycarp and Div 3
Codeforces Round #499 (Div. 1) A. Fly