Cod sursa(job #2071959)

Utilizator vladstanciuVlad Stanciu vladstanciu Data 21 noiembrie 2017 11:00:17
Problema Secventa Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.09 kb
#include <fstream>
#include <cstring>

const int N=500000;

using namespace std;
ifstream in("secventa.in");
ofstream out("secventa.out");
char s[N*8];
int v[N];
int d[N];
int main()
{
    int k,val,n,l,i,semn=1,a=0,S,st=0,dr=-1,x,y;
    in>>n>>k>>ws;
    in.getline(s,7*N+1);
    val=0;
    n=0;
    l=strlen(s);
    for(int i=0 ; i<l ; i++)
    {
        if(isdigit(s[i]))
        {
            val=val*10+(s[i]-'0');
        }
        else if(s[i]==' ')
        {
            v[n++]=val*semn;
            val=0;
            semn=1;
        }
        else
        {
            semn=-semn;
        }
    }
    S=0;
    v[n++]=val*semn;
    for(i=0 ; i<n ; i++)
    {
        S++;
        while(st<=dr && v[i]<=v[d[dr]])
        {
            dr--;
        }
        d[++dr]=i;
        if(st<=dr && d[st] == i - k)
        {
            st++;
        }
        //out << i - k + 2 << " " << i + 1 << " -> " << v[d[st]] << "\n";

        if(i >= k - 1 && a < v[d[st]])
        {
            a=v[d[st]];
            x = i - k + 1;
            y = i;
        }
    }
    out<<x + 1<<" "<<y + 1<<" "<<a;
    return 0;
}