Cod sursa(job #2571599)
Utilizator | Data | 5 martie 2020 08:44:22 | |
---|---|---|---|
Problema | Deque | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.47 kb |
#include <fstream>
using namespace std;
ifstream fin("deque.in");
ofstream fout("deque.out");
long long s;
int n,k,st,dr,i,a[5000005],d[5000005];
int main()
{
fin >> n >> k;
for (i=1;i<=n;i++) fin >> a[i];
d[1]=1;
st=dr=1;
for (i=2;i<=n;i++)
{
while (st<=dr && a[i]<=a[d[dr]]) dr--;
dr++;
d[dr]=i;
if (i-k==d[st]) st++;
if (i>=k) s+=a[d[st]];
}
fout << s;
return 0;
}