Codeforces Round 516 (Div. 2, by Moscow Team Olympiad)

2 problems from Codeforces Round 516 (Div. 2, by Moscow Team Olympiad) (contest 1064), difficulty 800-1200. 1/2 solutions verified against sample I/O.

2 items

Codeforces Round 516 (Div. 2, by Moscow Team Olympiad)

Div. 2 | 2 problems | 1/2 verified | Difficulty 800-1200 | 6m 25s

#	Problem	Rating	Tags	Accepted	Time	✓
A	Make a triangle!	800	brute-force, geometry, math	25,148	3m 20s
B	Equations of Mathematical Magic	1200	math	7,936	3m 5s	✓

Practice › Codeforces Solutions › Codeforces Round 516 (Div. 2, by Moscow Team Olympiad) ›

CF 1064A - Make a triangle!

We are given three positive integers representing the current lengths of three sticks. In one move, we are allowed to pick exactly one stick and increase its length by one unit.

Practice › Codeforces Solutions › Codeforces Round 516 (Div. 2, by Moscow Team Olympiad) ›

CF 1064B - Equations of Mathematical Magic

The equation links a number a with a variable x using two operations: subtraction and bitwise XOR. For each given value of a, we are asked to count how many non-negative integers x satisfy the identity a - (a XOR x) - x = 0. The input consists of several independent values of a.