Codeforces Beta Round 72 (Div. 2 Only)

2 problems from Codeforces Beta Round 72 (Div. 2 Only) (contest 84), difficulty 900-1700. 1/2 solutions verified against sample I/O.

2 items

Codeforces Beta Round 72 (Div. 2 Only)

Div. 2 | 2 problems | 1/2 verified | Difficulty 900-1700 | 4m 27s

#	Problem	Rating	Tags	Accepted	Time	✓
A	Toy Army	900	math, number-theory	16,615	1m 30s	✓
C	Biathlon	1700	binary-search, implementation	1,855	2m 57s

Practice › Codeforces Solutions › Codeforces Beta Round 72 (Div. 2 Only) ›

CF 84A - Toy Army

We have two armies, each containing n soldiers. The value of n is always even. The game lasts exactly three turns: 1. Valera attacks Arcady. 2. Arcady attacks Valera. 3. Valera attacks Arcady again.

Practice › Codeforces Solutions › Codeforces Beta Round 72 (Div. 2 Only) ›

CF 84C - Biathlon

We are given a set of circular targets, all lying on the Ox axis, each defined by its center coordinate and radius. Valera shoots multiple times, and each shot has an (x, y) coordinate.