add quadratic complexity tests
add quadratic complexity tests

ethers/solidity,LianaHus/solidity,vaporry/solidity,ruchevits/solidity,debris/solidity,ruchevits/solidity,chriseth/solidity,arkpar/solidity,ruchevits/solidity,gluk256/solidity,shahankhatch/solidity,chriseth/solidity-doc-test,ruchevits/solidity,douglas-larocca/solidity