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Cod sursa(job #957288)
#include <fstream>
#include <deque>
using namespace std;
ifstream f("secventa.in");
ofstream g("secventa.out");
deque < int > D;
int a[500010], n, k, inc, sf, minim=0, pozmin;
int main()
{
f>>n>>k;
for (int i=1; i<=n; i++) f>>a[i];
for (int i=1; i<=n; i++)
{
while (!D.empty() && a[i]<=a[D.back()]) D.pop_back();
D.push_back(i);
if (D.front()==i-k) D.pop_front();
if (i>=k && minim<a[D.front()]) minim=a[D.front()], pozmin=D.front();
}
inc=sf=pozmin;
while ( a[inc]>minim && inc>0 ) --inc; ++inc;
while ( a[sf]>minim && sf<=n ) ++sf; --sf;
g<<inc<<' '<<sf<<' '<<minim<<'\n';
return 0;
}