switch (add)
{
case 1:
ad=a1[i];
break;
case 2:
ad=a2[i];
break;
case 3:
ad=a3[i];
break;
case 4:
ad=a4[i];
break;
case 5:
ad=a5[i];
break;
case 6:
ad=a6[i];
break;
case 7:
ad=a7[i];
break;
case 8:
ad=a8[i];
break;
case 9:
ad=a9[i];
break;
case 10:
ad=a10[i];
break;
case 11:
ad=a11[i];
break;
case 12:
ad=a12[i];
break;
case 13:
ad=a13[i];
break;
case 14:
ad=a14[i];
break;
case 15:
ad=a15[i];
break;
case 16:
ad=a16[i];
break;
case 17:
ad=a17[i];
break;
case 18:
ad=a18[i];
break;
case 19:
ad=a19[i];
break;
case 20:
ad=a20[i];
break;
case 21:
ad=a21[i];
break;
case 22:
ad=a22[i];
break;