Difference of 2

CodeChefOpen on judge ↗

A pair of integers is called a twin if: 1. They are both primes. A prime number is an integer greater than 1 that has no positive divisors other 1 than and itself. 2. Their absolute difference is exactly equal to 2. Given an inclusive interval of integers from $n$ to $m$, can you help Param to find the number of pairs of twins that are there in the interval (i.e. [n,m] )? Note that $ (i,j)$ and

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