April Fools Contest 2018

4 problems from April Fools Contest 2018 (contest 952), difficulty 800-2400. 3/4 solutions verified against sample I/O.

4 items

April Fools Contest 2018

April Fools | 4 problems | 3/4 verified | Difficulty 800-2400 | 7m 7s

#	Problem	Rating	Tags	Accepted	Time	✓
A	Quirky Quantifiers	800	*special, math	11,974	1m 11s	✓
B	A Map of the Cat	1900	*special, brute-force, interactive	2,116	1m 2s	✓
E	Cheese Board	2000	*special	679	3m 39s
F	2 + 2 != 4	2400	*special	424	1m 15s	✓

Practice › Codeforces Solutions › April Fools Contest 2018 ›

CF 952E - Cheese Board

We are given a set of cheeses, each cheese has a unique name and a label indicating whether it is soft or hard. The names are just identifiers, but they can still be ordered lexicographically and used to define structure if needed.

Practice › Codeforces Solutions › April Fools Contest 2018 ›

CF 952F - 2 + 2 != 4

The input is a short arithmetic expression containing small non-negative integers and only two operations: addition and subtraction. There are no parentheses, no multiplication, and no hidden formatting rules beyond the usual infix notation.

Practice › Codeforces Solutions › April Fools Contest 2018 ›

CF 952A - Quirky Quantifiers

We are given a single integer a, guaranteed to be a three-digit or two-digit number between 10 and 999. The task is to output either 0 or 1 based on a hidden property of this number.

Practice › Codeforces Solutions › April Fools Contest 2018 ›

CF 952B - A Map of the Cat

We are interacting with a single unknown “cat”, but we are not told directly whether it behaves like a normal cat or a grumpy one. Instead, the cat is split into 10 labeled regions from 0 to 9, and we can probe the cat by choosing a region to pet.