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Cod sursa(job #523119)
#include <fstream>
using namespace std;
ifstream in ("secventa.in");
ofstream out("secventa.out");
const int N=500005;
int v[N],dq[N],n,k,st,dr;
void dreapta(int i)
{
while(st<=dr && v[dq[dr]]>=v[i])
--dr;
}
void adauga(int i)
{
dq[++dr]=i;
}
void stanga(int i)
{
if(i-dq[st]==k)
++st;
}
int main()
{
int i,poz1,poz2,max;
in>>n>>k;
for(i=1;i<=n;i++)
in>>v[i];
st=1;
dr=0;
for(i=1;i<=k;i++)
{
dreapta(i);
dq[++dr]=i;
}
max=v[dq[st]];
poz1=1;
poz2=i;
for(;i<=n;i++)
{
stanga(i);
dreapta(i);
adauga(i);
if (v[dq[st]]>max)
{
max=v[dq[st]];
poz1=i-k+1;
poz2=i;
}
}
out<<poz1<<" "<<poz2<<" "<<max<<"\n";
return 0;
}