Codeforces Round 683 (Div. 2, by Meet IT)

Solutions for Codeforces Round 683 (Div. 2, by Meet IT) (contest 1447). 1/2 problems verified against sample I/O. Difficulty range: 800-1000.

2 items

Codeforces Round 683 (Div. 2, by Meet IT)

Type: Div. 2 | Problems: 2 | Verified: 1/2 | Rating range: 800-1000 | Time: 3m 53s

Problem	Name	Rating	Tags	Solve Time	Verified
A	Add Candies	800	constructive-algorithms, math	1m 31s	✓
B	Numbers Box	1000	greedy, math	2m 22s	✗

Practice › Codeforces Solutions › Codeforces Round 683 (Div. 2, by Meet IT) ›

CF 1447B - Numbers Box

We are given a circle of points, each point representing a spool that must be paired with exactly one other spool using a straight chord. Every spool has a color, black or white, and some positions are initially uncolored and can be assigned either color.

Practice › Codeforces Solutions › Codeforces Round 683 (Div. 2, by Meet IT) ›

CF 1447A - Add Candies

We start with a very structured array: the i-th bag contains exactly i candies. So the initial state is simply an arithmetic progression like 1, 2, 3, ..., n.