Cod sursa(job #3164893)

Utilizator AlexandraVarutualexandra varutu AlexandraVarutu Data 4 noiembrie 2023 18:06:36
Problema Secventa Scor 10
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.83 kb
/*#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("secventa.in");
ofstream fout("secventa.out");
int a[500001],sol[500001][2];///sol tine si indicele si val minimului det din fiecare scventa
int main()
{
    int n,k,max1=-30001,pozi=1,pozf=1,p=0;
    fin>>n>>k;
    for(int i=1;i<=n;i++){
        fin>>a[i];
        sol[i][0]=30001;
        for(int j=i;j>p;j--){
            if(sol[j][0]>a[i]){
                if(i-j+1<=k){
                    sol[j][0]=a[i];
                    sol[j][1]=i;
                } else{
                    p=j;
                }
            }else
            {
                sol[j][1]=i;
            }

        }
    }
    for(int j=1;j<=n-k+1;j++){
        if(sol[j][0]>max1){
                max1=sol[j][0];
                pozi=j;
                pozf=sol[j][1];
        }
    }
    cout<<pozi<<" "<<pozf<<" "<<max1;

    return 0;
}
*/
#include <iostream>
#include <fstream>
#include <climits>
using namespace std;
ifstream fin("secventa.in");
ofstream fout("secventa.out");
int v[500001],dq[500001],n,k,i,max1=INT_MIN,pozi=0,pozf=0;///deq pozitiile din v
int main()
{
    fin>>n>>k;
    int st=0,dr=0;
    v[0]=INT_MIN;
    for(int i=1;i<=n;i++){
        fin>>v[i];
        while(i-dq[st]+1>k){ ///elimin de la inceput deoarece lung secv ce se termina in i este mai mare decat k
            st++;
        }
        while(st<=dr && v[i]<=v[dq[dr]]){
            dr--;
        }
        dq[++dr]=i;
        if(i>=k){
            if(max1<v[dq[st]]){
                max1=v[dq[st]];
                pozi=i-k+1;
            }
        }
    }
    pozf=pozi;
    for(int i=pozi+1;i<=n;i++){
        if(max1<=v[i]){
           pozf++;
        }else{
            break;
        }
    }
    fout<<pozi<<" "<<pozf<<" "<<max1;
    return 0;
}