Codeforces Beta Round 72 (Div. 2 Only)

Solutions for Codeforces Beta Round 72 (Div. 2 Only) (contest 84). 1/2 problems verified against sample I/O. Difficulty range: 900-1700.

2 items

Codeforces Beta Round 72 (Div. 2 Only)

Type: Div. 2 | Problems: 2 | Verified: 1/2 | Rating range: 900-1700 | Time: 4m 27s

Problem	Name	Rating	Tags	Solve Time	Verified
A	Toy Army	900	math, number-theory	1m 30s	✓
C	Biathlon	1700	binary-search, implementation	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.