fishing2.pas

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program fishing(input,output);{贪心}
const maxF = 1000;
      maxN = 100;

type nodeP = record
                  fish,delta,time:longint;
             end;

var Hash:array[0..maxF] of longint;
    Pound:array[1..maxN] of nodeP;
    ans,n,t:longint;

procedure setIO;
begin
  assign(input,'fishing.in');
  reset(input);
  assign(output,'fishing.out');
  rewrite(output);
end;

procedure Init;
var i:longint;
begin
   read(n);
   for i:=1 to n do read(pound[i].fish);
   for i:=1 to n do read(pound[i].delta);
   for i:=1 to n-1 do read(pound[i+1].time);
   read(t);
   ans:=-maxlongint;
end;

procedure Doit;
var i,j,remain,tmp:longint;
begin
   for i:=1 to n do
      with pound[i] do
        begin
           dec(t,time);
           for j:=0 to fish div delta do inc(Hash[fish-j*delta]);
           tmp:=0; remain:=t; j:=maxF;
           while remain>0 do
               begin
                  while (Hash[j]=0) and (j>0) do dec(j);
                  if j=0 then break;
                  if Hash[j]<=remain then
                      begin
                          dec(remain,Hash[j]);
                          inc(tmp,Hash[j]*j);
                      end
                  else begin
                          inc(tmp,remain*j);
                          remain:=0;
                       end;
                  dec(j);
               end;
           if tmp>ans then ans:=tmp;
        end;
end;

procedure Print;
begin
  writeln(ans);
  close(output);
end;

begin
  setIO;
  Init;
  Doit;
  Print;
end.