import java.util.Scanner;
import java.io.IOException;
import java.util.ArrayList;


public class WFQ
{

   public static double compute_VT_Rate(ArrayList<QueueElem>[] Q,
					double[] w)
   {
      double r = 0.0;

      for (int i = 0; i < Q.length; i++)
         if ( Q[i].size() > 0 )
	    r += w[i];

      return(1/r);
   }

   public static void printArrivals(double [] arrTime, int[] flowID, 
				double[] packetLen)
   {
      for (int i = 0; i < arrTime.length; i++)
	 System.out.println(" T = " + arrTime[i] 
			+ ", flow " + flowID[i]
			+ ", length " + packetLen[i]);
   }

   public static void printFFS_State(ArrayList<QueueElem>[] Q)
   {
      System.out.println("----------------------------------------");
      System.out.println("FFS State:");
      for (int i = 0; i < Q.length; i++)
	 if ( Q[i].size() > 0 )
            System.out.println("Q[" + i + "].get(0).remaining_Virt_len = "
                        + Q[i].get(0).remaining_Virt_len);
      System.out.println("----------------------------------------");
   }


   public static void main(String[] args) throws IOException
   {

      int Ordering = 1;

      Scanner in = new Scanner(System.in);
      int i, j, k;

      int nFlows;		// # Flows 
      double[] w;		// w[i] = weight of flow i
      ArrayList<QueueElem> Q[];	// Queue[i] = packet queue of flow i

      int nArrs;		// # Arrivals
      double [] arrTime;	// arrTime[i] = arrival time of packet i
      int[] flowID;		// flowID[i] = ID of the flow of packet i
      double[] packetLen;	// packetLen[i] = Norm. length of packet i


      double new_t = 0.0;
      double new_vt = 0.0;

      System.out.print("# flows = ");
      nFlows = in.nextInt();

      w = new double[nFlows];
      Q = new ArrayList[nFlows];

      for (i = 0; i < nFlows; i++)
      {
         System.out.print("Weight of flow " + i + " = ");
         w[i] = in.nextDouble();
         Q[i] = new ArrayList<QueueElem>();
      }

      System.out.print("# Arrivals = ");
      nArrs = in.nextInt();

      arrTime = new double[nArrs];
      flowID = new int[nArrs];
      packetLen = new double[nArrs];

      for (i = 0; i < nArrs; i++)
      {
         System.out.print("Arrival time " + i + " = ");
         arrTime[i] = in.nextDouble();

         System.out.print("Flow ID " + i + " = ");
         flowID[i] = in.nextInt();

         System.out.print("Packet len " + i + " = ");
         packetLen[i] = in.nextDouble();
      }


      printArrivals(arrTime, flowID, packetLen);

      System.out.println("Begin WFQ computation");
      /* ***********************************************
	 WFQ Begins here
         *********************************************** */

      double t = 0.0;		// = Now, real time clock
      double vt = 0.0;		// = Now, virtual time clock
      double vt_rate = 0.0;	// = speed of virtual time clock
      QueueElem PacketQ = null;

      // ----------------------------------------
      // Variables for packet Arrival
      // ----------------------------------------
      int nextArrIndex = 0;
      double nextArrTime = arrTime[0];
      int nextFlowID = -1;
      double nextPacketLen = -1.0;
      QueueElem q;

      // ----------------------------
      // Next packet departure
      // ----------------------------
      double nextDepatureTime = 0.0;


      // ----------------------------------------
      // Variables for Flow's virtual clocks
      // ----------------------------------------
      double[] VT_flow = new double[nFlows]; // Max flow TS
      double   next_FFS_service_end_time;
      double last_update_time = 0.0;		     // Last real time rem len updated

      for (i = 0; i < nFlows; i++)
	  VT_flow[i] = 0.0;

      next_FFS_service_end_time = -1.0;

      // ------------------------
      // Help variables
      // ------------------------
      

      /* ---------------------------------------------------------------
	 Main loop
         --------------------------------------------------------------- */
      while (true)
      {
	 System.out.println("\n\n\n");
	 System.out.println("==========================================");
	 System.out.println("last_update_time = " + last_update_time);
	 System.out.println("Current packet Queue:");
	 List.print(PacketQ);
	 printFFS_State(Q);
	 System.out.println("^^^^^^^^^^^^^^^^^^^^^^^");

	 System.out.println("BEGIN LOOP");
	 System.out.println("t = " + t + " , vt = " + vt);

/**********************************************************************/

	 // ----------------------------------------------------------
	 // Determine next arrival time
	 // ----------------------------------------------------------
	 if ( nextArrIndex < nArrs )
	 {
	    nextArrTime = arrTime[nextArrIndex];
	 }
	 else
	 {
	    nextArrTime = 9999999.0;
	 }

	 // ----------------------------------------------------------
	 // Determine next departure time
	 // ----------------------------------------------------------
         if ( PacketQ != null )
         {
            nextDepatureTime = t + PacketQ.remaining_TransTime;
         }
	 else
	 {
	    nextDepatureTime = 9999999.0;
	 }

	 
	 // ----------------------------------------------------------
	 // Determine next FFS finish time
	 // ----------------------------------------------------------

	 vt_rate = compute_VT_Rate(Q, w);
	 // System.out.println("vt_rate = "  + vt_rate );

	 next_FFS_service_end_time = 9999999.0;  // Cheap trick

	 for ( i = 0; i < nFlows; i++ )
         {
	    double h;
	    double transmit_rate;

	    if ( Q[i].size() > 0 )
	    {
	       h = Q[i].get(0).remaining_Virt_len;

	       System.out.println("Flow " + i 
				+ " Rem. virt len = " + h);

 	       h = h / w[i];

	       System.out.println("Flow " + i 
				+ " Rem. virtual transmit time = " + h);

	       if ( h < next_FFS_service_end_time )
		  next_FFS_service_end_time = h;
	    }
	 }
	 next_FFS_service_end_time += t;

//	 System.out.println("+++ Next FFS service end time = " 
//			+ next_FFS_service_end_time);

/**********************************************************************/

	// ******************************************************************
	// Print timing information
	// ******************************************************************
	 System.out.println("+++ Next arrival time = " + nextArrTime 
		+ "   (flow ID = " + nextFlowID 
		+ ", packet len = " + nextPacketLen + ")");

	 System.out.println("+++ Next packet departure time = " 
			+ nextDepatureTime);

	 System.out.println("+++ Next FFS service end time = " 
			+ next_FFS_service_end_time);

	 System.out.println("--------------------------------");

/**********************************************************************/

         // **************************************
	 // Test first !!!
         // **************************************

	 boolean Arrival, Departure, FFS_fin;

	 Arrival = Departure = FFS_fin = false;

         if ((nextArrTime <= nextDepatureTime) &&
	     (nextArrTime >= 0 && nextArrTime <= next_FFS_service_end_time) &&
		nextFlowID < nArrs )
	 {
	    System.out.println("Do Arrival = TRUE");
	    Arrival = true;

	    new_t = nextArrTime;
         }

         if ((nextDepatureTime<= nextArrTime) &&
                nextDepatureTime <= next_FFS_service_end_time )
	 {
	    System.out.println("Do Departure = TRUE");
	    Departure = true;

	    new_t = nextDepatureTime;
         }

         if ((next_FFS_service_end_time <= nextArrTime) &&
                next_FFS_service_end_time <= nextDepatureTime)
	 {
	    System.out.println("Do FFS_fin = TRUE");
	    FFS_fin = true;

	    new_t = next_FFS_service_end_time;
         }

	 vt_rate = compute_VT_Rate(Q, w);
	 new_vt = vt + vt_rate * (new_t - t);

 System.out.println("@@@@@@@@@@@@@@@@ DEBUG: new_t = " + new_t);
 System.out.println("@@@@@@@@@@@@@@@@ DEBUG: new_vt = " + new_vt);

/**********************************************************************/
// PROCESS !!!
/**********************************************************************/

 System.out.println(" + + + + PROCESSING !!! + + + + + +");

	 // *******************
	 // Virtual progress
	 // *******************

	 System.out.println("********************************");
	 System.out.println("Processing VIRTUAL progress\n");
	 System.out.println("********************************");
	 System.out.println("vt_rate= " + vt_rate);
	 for (i = 0; i < nFlows; i++)
	 {
	    if ( Q[i].size() > 0 )
	    {
	       System.out.println("w[" + i + "] = " + w[i]);

	       QueueElem x = Q[i].get(0);
	       x.remaining_Virt_len -= w[i] * vt_rate *
	              (new_t - x.last_update_time);
	       x.last_update_time = new_t;

	       System.out.println("Flow " + i + " remaining_Virt_len = " 
					+ x.remaining_Virt_len);

	       System.out.println("Flow " + i + " remaining_Virt_len/w = " 
					+ x.remaining_Virt_len/w[i]);
	    }
	 }

	 // *******************
	 // Real progress
	 // *******************
	 System.out.println("********************************");
	 System.out.println("Processing REAL progress\n");
	 System.out.println("********************************");

	 if ( PacketQ != null )
	 {
	    PacketQ.remaining_TransTime -= (new_t - last_update_time);

	    System.out.println("!!!! Packet Q, remaining trans time = " 
					+ PacketQ.remaining_TransTime);
	 }

         // ********************************
	 // Remember the current time and compute curret VT rate
         // ********************************
	 last_update_time = new_t;

         // **************************************
	 // Check if next event = packet arrival
         // **************************************
         if ( Arrival )
	 {
	    System.out.println("***** Processing packet arrival");

	    // Packet arrival

	    System.out.println("nextArrIndex = " + nextArrIndex);
	    System.out.println("nextArrTime = " + nextArrTime);
            nextFlowID = flowID[nextArrIndex];
            nextPacketLen = packetLen[nextArrIndex];

            q = new QueueElem();

            q.flowID = nextFlowID;
            q.packetLen = nextPacketLen;

            q.remaining_TransTime = q.packetLen;
            q.remaining_Virt_len = q.packetLen;
            q.last_update_time = new_t;

            q.virtualFinTime = ( (VT_flow[nextFlowID] > new_vt) ?
                                    VT_flow[nextFlowID] : new_vt ) +
                                       q.remaining_Virt_len/w[nextFlowID];
            VT_flow[nextFlowID] = q.virtualFinTime;

            Q[nextFlowID].add(q);


            // *********************************
            // Insert in Packet Q
            // *********************************
            PacketQ = List.insert(PacketQ, q);


	    nextArrIndex++;		// go to Next arrival
	 }

         // **************************************
         // Check if next event = packet departure
         // **************************************
         if ( Departure )
         {
	    System.out.println("***** Processing packet departure");

	    System.out.println(">>>>>> Output order " + Ordering
			+ " --> flow ID = " + PacketQ.flowID 
			+ " (packet len = " + PacketQ.packetLen + ")");
	    Ordering++;

	    PacketQ = List.delete(PacketQ);

	    if ( PacketQ != null )
            {
               PacketQ.remaining_TransTime = PacketQ.packetLen;
               PacketQ.last_update_time = new_t;
	    }

	    System.out.println("--- PacketQ after processing packet departure");
	    if ( PacketQ != null )
	    {
	       List.print(PacketQ);
	    }
	    System.out.println("-------------------------------------");

	 }


         // **************************************
         // Check if next event = FFS fin packet 
         // **************************************
         if ( FFS_fin )
         {
	    System.out.println("***** Processing FFS Finish");


            for ( i = 0; i < nFlows; i++ )
            {

               if ( Q[i].size() > 0 )
               {
                  if ( Q[i].get(0).remaining_Virt_len < 0.00001 )
		  {
		     Q[i].remove(0);

		     if ( Q[i].size() > 0 )
		     {
		        Q[i].get(0).remaining_Virt_len =
			               Q[i].get(0).packetLen;
		     }
		  }
               }
            }


         }



	 /* --------------------------------------------
	    
		t ------------> new_t
		    vt_rate
	    -------------------------------------------- */
	 vt_rate = compute_VT_Rate(Q, w);
	 new_vt = vt + vt_rate * (new_t - t);

	 t = new_t;
	 vt = new_vt;

	 if (PacketQ == null )
	 {
	    System.out.println("t = " + t + " ----- END");
	    break;
	 }

	 System.out.println("vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv");
	 System.out.println("END OF LOOP:");
	 System.out.println("t = " + t);
	 System.out.println("vt = " + vt);
	 System.out.println("Current packet Queue:");
	 List.print(PacketQ);
	 printFFS_State(Q);
	 System.out.println("^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^");
	 System.out.println("\n\n");
      }
   }
}