input: n1(10,1,200) ,n2(20,1,200) ,n3(30,1,200); l<ma(c,n1) and l<=ma(c,n2) and l<=ma(c,n3) and c>=ma(c,5) and c>ma(c,10) and c>ma(c,20) and c>ma(c,30) and vol/ref(ma(vol,5),1)>=3;
