QBTICKET - Mua vé tàu hoả
Tác giả: RR
Ngôn ngữ: Pascal
{$R+,Q+}
uses math;
const
FINP='';
FOUT='';
MAXN=100111;
oo=1000000000000000001;
var
f1,f2:text;
n,l1,l2,l3,c1,c2,c3,s,t,start,target:int64;
vt,ind:array[1..MAXN] of int64;
d:array[1..MAXN] of int64;
procedure openF;
begin
assign(f1,FINP); reset(f1);
assign(f2,FOUT); rewrite(f2);
end;
procedure closeF;
begin
close(f1);
close(f2);
end;
procedure inp;
var
i:longint;
begin
read(f1,l1,l2,l3,c1,c2,c3);
read(f1,n);
read(f1,s,t);
for i:=2 to n do read(f1,vt[i]);
for i:=1 to n do ind[i]:=i;
end;
procedure swap(var a,b:int64);
var
temp:int64;
begin
temp:=a; a:=b; b:=temp;
end;
procedure sort(l,r:int64);
var
i,j,mid:int64;
begin
i:=l; j:=r; mid:=vt[l+random(r-l+1)];
repeat
while vt[i]<mid do inc(i);
while vt[j]>mid do dec(j);
if i<=j then
begin
swap(vt[i],vt[j]);
swap(ind[i],ind[j]);
inc(i); dec(j);
end;
until i>j;
if i<r then sort(i,r);
if l<j then sort(l,j);
end;
procedure solve;
var
i1,i2,i3:int64;
i:longint;
begin
// for i:=2 to n do if ind[i]=s then start:=i;
// for i:=2 to n do if ind[i]=t then target:=i;
start:=s; target:=t;
if start>target then swap(start,target);
d[start]:=0; i1:=start; i2:=start; i3:=start;
for i:=1+start to target do
begin
d[i]:=oo;
//Cap nhat theo loai 1
while (vt[i]-vt[i1]>l1) do inc(i1);
d[i]:=min(d[i],d[i1]+c1);
//Cap nhat theo loai 2
while (vt[i]-vt[i2]>l2) do inc(i2);
d[i]:=min(d[i],d[i2]+c2);
//Cap nhat theo loai 3
while (vt[i]-vt[i3]>l3) do inc(i3);
d[i]:=min(d[i],d[i3]+c3);
end;
end;
procedure ans;
begin
writeln(f2,d[target]);
end;
begin
openF;
inp;
// sort(1,n);
solve;
ans;
closeF;
end.