> int datas[datamax],tmpa[65536],tmpb[datamax],N;
> void raidxsort(){
>      memset(tmpa,0,sizeof(tmpa));
>      for (int i=0;i<N;++i)++tmpa[(datas[i]&65535)+1];
>      for (int i=1;i<65536;++i)tmpa[i]+=tmpa[i-1];
>      for (int i=0;i<N;++i)tmpb[tmpa[datas[i]&65535]++]=datas[i];
>      memset(tmpa,0,sizeof(tmpa));
>      for (int i=0;i<N;++i)++tmpa[(tmpb[i]>>16)+1];
>      for (int i=1;i<65536;++i)tmpa[i]+=tmpa[i-1];
>      for (int i=0;i<N;++i)datas[tmpa[tmpb[i]>>16]++]=tmpb[i];
> }