A.a0,a1,a2,a3 B.a[0],a[1],a[2],a[3] C.a[1],a[2],a[2],a[4] D.a[0],a[1],a[2],a[3],a[4]
A.j=i; B.j=(long)i; C.i=(int)j; D.i=j;