public class Common
    {

        public override int GetHashCode()
        {
            return base.GetHashCode();
        }
        public override bool Equals(object obj)
        {
            return base.Equals(obj);
        }
        public int WeightMax { get; set; } = 0;
        public int WeightLarge { get; set; } = 0;
        public int WeightSmall { get; set; } = 0;
        public int WeightMin { get; set; } = 0;
        public static bool operator ==(Common m1, Common m2)
        {
            if (m1.WeightLarge == m2.WeightMax) return true;
            return false;
        }
        public static bool operator !=(Common m1, Common m2)
        {
            if (m1.WeightMax != m2.WeightLarge) return true;
            return false;
        }
    }