Cod sursa(job #206105)

Utilizator vladnVlad Nistorica vladn Data 4 septembrie 2008 18:45:31
Problema Secventa Scor 100
Compilator fpc Status done
Runda Arhiva de probleme Marime 1.2 kb
var f,g:text;
    n,k,i,rez,st,dr,poz,j:longint;
    er:integer;
    s,x:string;
    a,q:array[1..500000] of longint;
    b:array[0..5000000] of char;
    ok:boolean;
begin
assign(f,'secventa.in');reset(f);
assign(g,'secventa.out');rewrite(g);
readln(f,n,k);
read(f,b);i:=0;b[0]:='0';j:=0;
while b[i] in (['0'..'9']+[' ']) do
         begin
         inc(I);
         inc(j);
         a[j]:=0;
         ok:=false;
         if b[i]='-' then begin
                          ok:=true;
                          i:=i+1;
                          end;
         while (b[i]in ['0'..'9']) do
                 begin
                 a[j]:=a[j]*10+ord(b[i])-48;
                 inc(I);
                 end;
         if ok then a[j]:=0-a[j];
         end;
rez:=maxlongint*-1;
st:=1;
dr:=0;
for i:=1 to k-1 do begin
    while (dr>=st) and (a[i]<=a[q[dr]]) do dr:=dr-1;
    dr:=dr+1;
    q[dr]:=i;
end;
for i:=k to n do begin
    while (st<=dr) and (a[i]<=a[q[dr]]) do dr:=dr-1;
    dr:=dr+1;
    q[dr]:=i;
    while (st<=dr) and (q[st]<i-k+1) do st:=st+1;
    if a[q[st]]>rez then begin
       rez:=a[q[st]];
       poz:=i;
    end;
end;
writeln(g,poz-k+1,' ',poz,' ',rez);
close(g);
end.