VK Cup 2018 - Wild-card Round 1

2 problems from VK Cup 2018 - Wild-card Round 1 (contest 926), difficulty 1300-2000. 2/2 solutions verified against sample I/O.

2 items

VK Cup 2018 - Wild-card Round 1

Special | 2 problems | 2/2 verified | Difficulty 1300-2000 | 2m 25s

#	Problem	Rating	Tags	Accepted	Time	✓
A	2-3-numbers	1300	implementation, math	4,160	1m 11s	✓
F	Mobile Communications	2000		324	1m 14s	✓

Practice › Codeforces Solutions › VK Cup 2018 - Wild-card Round 1 ›

CF 926F - Mobile Communications

We are simulating a bank account over a sequence of days. Each day starts with a fixed charge of $p$ rubles applied to the account. On some specific days, before this charge happens, Arkady deposits money into the account.

Practice › Codeforces Solutions › VK Cup 2018 - Wild-card Round 1 ›

CF 926A - 2-3-numbers

We are asked to count how many integers in a closed interval $[l, r]$ can be written using only the prime factors 2 and 3. Any valid number must have the form $2^x cdot 3^y$, where both exponents are non-negative integers.