Cod sursa(job #812491)

Utilizator gabipurcaruGabi Purcaru gabipurcaru Data 13 noiembrie 2012 22:08:12
Problema Secventa Scor 80
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.72 kb
#include <fstream>
#include <utility>
#include <queue>
using namespace std;

ifstream in("secventa.in");
ofstream out("secventa.out");

deque<pair<int,int> > q;
int n,k,a[500010],i,li,ls,m;

int main() {
    in>>n>>k;
    m = -(1<<29);
    for(i=1; i<=n; i++) {
        in>>a[i];
        while(!q.empty() && q.back().first >= a[i]) {
            q.pop_back();
        }
        q.push_back(make_pair(a[i], i));
        while(q.front().second <= i-k) {
            q.pop_front();
        }
        if(i >= k && m < q.front().first) {
            m = q.front().first;
            li = i-k+1;
            while(li > 1 && a[li-1] >= m)
                li--;
            ls = i;
        }
    }
    out<<li<<' '<<ls<<' '<<m;
    return 0;
}