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Your first step to ace the Solidity coding interview. FizzBuzz is one of the most infamous coding challenges to quickly screen off candidates.
Will you be able to calculate the sum of all even Fibonacci numbers up to 4000000 or you will push the EVM to its knees?
Sieve of eratosthenes, Sieve of Atkin, your choice. In this challenge you will test your prime factorization skills in Solidity.
The contract in this challenge contains a severe vulnerability. Your mission is to both identify and fix it.