static Studentas[] suliejimas(Studentas[] A, Studentas[] B)
        {
            Studentas[] C = new Studentas[A.Length + B.Length];

            int a = 0, b = 0, c = 0;
            while (a < A.Length && b < B.Length)
            {
                if (string.Compare(A[a].ImtiVardaIrPavarde(), B[b].ImtiVardaIrPavarde()) < 0 ||
                    string.Compare(A[a].ImtiVardaIrPavarde(), B[b].ImtiVardaIrPavarde()) == 0 && A[a].ImtiVidruki() > B[b].ImtiVidruki() ||
                    string.Compare(A[a].ImtiVardaIrPavarde(), B[b].ImtiVardaIrPavarde()) == 0 && A[a].ImtiVidruki() == B[b].ImtiVidruki() && A[a].egzaminopaz > B[b].egzaminopaz)

                    C[c++] = A[a++];
                else
                    C[c++] = B[b++];
            }

            while (a < A.Length)
                C[c++] = A[a++];

            while (b < B.Length)
                C[c++] = B[b++];

            return C;
        }