S=0.0
DO 10 I=1,N
S=S+X(I)*Y(I)
10 CONTINUE
END
DO 10 I=1,M
DO 20 J=1,N
S=0.0
DO 30 K=1,P
S=S+A(I,K)*B(K,J)
30 CONTINUE
C(I,J)=S
20 CONTINUE
10 CONTINUE
END
DO 10 I=1,M
S=0.0
DO 20 J=1,N
S=S+A(I,J)*X(J)
20 CONTINUE
Y(I)=S
10 CONTINUE
END