Thanks for the participation!

1744A - Замена чисел was authored by MikeMirzayanov and prepared by 74TrAkToR

1744B - Чётно-нечётные прибавления was authored and prepared by 74TrAkToR

1744C - Светофор was authored by MikeMirzayanov and 74TrAkToR, prepared by 74TrAkToR

1744D - Делимость на 2^n was authored and prepared by 74TrAkToR

1744E2 - Делимые числа (сложная версия) was authored and prepared by 74TrAkToR

1744F - MEX против MED was authored and prepared by 74TrAkToR