Cod sursa(job #2045150)

Utilizator DenisONIcBanu Denis Andrei DenisONIc Data 21 octombrie 2017 21:12:24
Problema Secventa Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.8 kb
#include <bits/stdc++.h>
#define Nmax 500001
using namespace std;

FILE *f = fopen("secventa.in","r");
FILE *g = fopen("secventa.out","w");

int n,k,v[Nmax],lst,mx=-1e7,sav,fst;
int Qv[Nmax],Qp[Nmax];

void read(int &x)
{
    char c;
    x = 0;
    do
    {
        fscanf(f,"%c",&c);
        if (!(c>='0' && c<='9'))
            return;
        x = x * 10 + c-'0';
    }while(true);
}

int main()
{
    fscanf(f,"%ld %ld\n",&n,&k);
    for (int i=1;i<=n;i++)
    {
        read(v[i]);
        while (lst<=fst && Qv[fst]>=v[i])
            fst--;
        Qv[++fst] = v[i];
        Qp[fst] = i;
        if (Qp[lst]<i-k+1)
            lst++;
        if (mx<Qv[lst] && i>=k)
            {mx = Qv[lst],sav = i-k+1;}
    }
    fprintf(g,"%d %d %d",sav,sav+k-1,mx);
    return 0;
}