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Cod sursa(job #28422)
var f,g:text;
a:array[1..50100]of longint;
sc,smax,n,k,poz,x,y,i:longint;
begin
assign(f,'secv2.in');reset(f);
assign(g,'secv2.out');rewrite(g);
readln(f,n,k);
for i:=1 to n do
read(f,a[i]);
sc:=a[1];poz:=1;
smax:=a[1];x:=1;y:=1;
for i:=2 to n do
begin
if sc<0 then begin
sc:=a[i];
poz:=i;
end
else sc:=sc+a[i];
if sc>smax then if i-poz+1>=k then begin
smax:=sc;
x:=poz;
y:=i;
end;
end;
writeln(g,x,' ',y,' ',smax);
close(f);
close(g);
end.