Disclaimer : the contest was over in the platform it was asked so you can safely answer

Problem : You have check whether the given number can be written as sum of 2 primes

sample input :

20

output :

yes, 20 = 17 + 3

my logic:

if number β even {

print(yes) // according to goldbach conjecture

}

else{

if(isprime(n-2)) print(yes)

else print(no)

}

what iam doing is,

when n is even it can be always written as sum of two primes

when n is odd ,

wkt, odd + odd = even

even + odd = odd

and except 2 all other primes are odd

so checking (n-2) for prime.

My solution was wrong according to Skill**ck platform

Kindly helpβ¦