PROGRAM:LOOP
(A,B)→dim([C])
For(I,1,A)
For(J,1,B)
int(rand*20+1)→[C](I,J)
End
End
For(I,1,A)
For(J,1,B)
Disp [C](I,J)
If [C](I,J)=20
Then
Stop
End
End
End

3→A:4→B:prgmLOOP