Codeforces Round 275 (Div. 2)

Solutions for Codeforces Round 275 (Div. 2) (contest 483). 0/2 problems verified against sample I/O. Difficulty range: 1100-1800.

2 items

Codeforces Round 275 (Div. 2)

Type: Div. 2 | Problems: 2 | Verified: 0/2 | Rating range: 1100-1800 | Time: 16m 14s

Problem Name Rating Tags Solve Time Verified
A Counterexample 1100 brute-force, implementation, math 10m 52s ✗
B Friends and Presents 1800 binary-search, math 5m 22s ✗
Practice › Codeforces Solutions › Codeforces Round 275 (Div. 2) ›

CF 483A - Counterexample

We are asked to construct three integers inside a given interval such that they form a very specific pattern of coprimality relationships.
codeforces competitive-programming brute-force implementation math number-theory May 31, 2026
Practice › Codeforces Solutions › Codeforces Round 275 (Div. 2) ›

CF 483B - Friends and Presents

Codeforces 483B: Friends and Presents
codeforces competitive-programming binary-search math May 31, 2026