Cod sursa(job #1278305)

Utilizator gapdanPopescu George gapdan Data 28 noiembrie 2014 17:57:10
Problema Secventa Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.98 kb
#include<fstream>
#include<cstdio>
#include<deque>
#define INF 100001
#define NMAX 500001
using namespace std;
int n,k,i,poz,st,dr;
int a[NMAX];
deque<int>d;
FILE *f=freopen("secventa.in","r",stdin);
int nr()
{
    int r=0,ok=0,e=0;
    char c;
   c=fgetc(f);
   if (c=='-') ok=1,e=1;
    while(c!=' ' && c!='\n')
    {
        if (e==0)r=r*10+(c-'0');
            else e=0;
        c=fgetc(f);
    }
    if (ok==1) r*=-1;
    return r;
}
int main()
{
    ofstream g("secventa.out");
   scanf("%d %d",&n,&k);
   char t=fgetc(f);
    for (i=1;i<=n;++i) a[i]=nr();
    a[0]=-INF;
    for (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)
            if (a[d.front()]>a[poz])
            {
                poz=d.front();
                dr=i;
                st=dr-k+1;
            }
    }
    g<<st<<' '<<dr<<' '<<a[poz];
    return 0;
}