Fun with Two

CodeChefOpen on judge ↗

You are given two integers $A$ and $B$, in which one of them is guaranteed to be equal to **2**. With $A$ and $B$, you are allowed to create any number $X$ which can be expressed as **$M*A + N*B$** for any non-negative integers $M$ and $N$. Find out the number of natural numbers which cannot be expressed as stated above. If there are infinite of them then print $-1$. ###Input: - First and only

HINT LADDERno hints yet

L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

🔒

L5 Full solution

L5 unlocks only if you insist twice

solution.cppC++17

CodeSearch Tutor

Hints, not spoilers — it won’t hand over the full solution unless you insist.

voice by Sarvam AI