Cod sursa(job #2631276)

Utilizator alex_benescuAlex Ben alex_benescu Data 29 iunie 2020 17:19:44
Problema Secventa Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.02 kb
#include <fstream>
#include <deque>
using namespace std;
ifstream in ("secventa.in");
ofstream out ("secventa.out");
int a[500001];
deque <int> q;
char s[4000000];
int main(){
  int n,k,semn=1,nr,cate=0;
  in>>n>>k;
  in.get();
  in.getline(s, 3999999);
  int i=0;
  while (s[i]){
    if (s[i]==' ')
      i++;
    else if (s[i]=='-'){
      semn=-1;
      i++;
    }
    else{
      nr=0;
      while (s[i] && s[i]>='0' && s[i]<='9'){
        nr=nr*10+(s[i]-48);
        i++;
      }
      a[++cate]=nr*semn;
      semn=1;
    }
  }
  for (i=1;i<=k;i++){
    int x=a[i];
    while (!q.empty() && a[q.back()]>=x)
      q.pop_back();
    q.push_back(i);
  }
  int maxx=a[q.front()];
  int ind=k;
  for (i=k+1;i<=n;i++){
    int x=a[i];
    while (!q.empty() && a[q.back()]>=x)
      q.pop_back();
    q.push_back(i);
    if (q.front()<i-k+1)
      q.pop_front();
    if (a[q.front()]>maxx){
      maxx=a[q.front()];
      ind=i;
    }
  }
  out<<ind-k+1<<' '<<ind<<' '<<maxx;
  return 0;
}