Codeforces Round 122 (Div. 2)

Solutions for Codeforces Round 122 (Div. 2) (contest 194). 2/2 problems verified against sample I/O. Difficulty range: 900-1200.

2 items

Codeforces Round 122 (Div. 2)

Type: Div. 2 | Problems: 2 | Verified: 2/2 | Rating range: 900-1200 | Time: 2m 59s

Problem	Name	Rating	Tags	Solve Time	Verified
A	Exams	900	implementation, math	1m 28s	✓
B	Square	1200	math	1m 31s	✓

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CF 194A - Exams

The author has to take n exams. Every exam receives an integer grade between 2 and 5 inclusive. A grade of 2 means the exam is failed and must be retaken. The total sum of all grades must equal exactly k.

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CF 194B - Square

We have a person walking around the border of a square whose side length is n. He starts at the lower-left corner and places a cross there immediately. After that, he keeps moving clockwise along the perimeter, placing another cross every n + 1 meters.