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Cod sursa(job #569459)
#include<fstream>
using namespace std;
int dr,st=1,d[500001],x[500001],n,k,max1;
ifstream in("secventa.in");
ofstream out("secventa.out");
void eliminast(int i)
{
if (i-d[st]==k)
++st;
}
void eliminadr(int i)
{
while (st<=dr && x[d[dr]]>=x[i])
--dr;
}
void adauga(int i)
{
d[++dr]=i;
}
int main()
{
int i,poz;
in>>n>>k;
for(i=1;i<=k;++i)
{
in>>x[i];
eliminadr(i);
adauga(i);
}
max1 = x[d[st]];
poz = k;
for(i=k+1;i<=n;++i)
{
in>>x[i];
eliminast(i);
eliminadr(i);
adauga(i);
if (x[d[st]]>max1)
{
max1=x[d[st]];
poz=i;
}
}
out<<poz-k+1<<" "<<poz<<" "<<max1;
return 0;
}