Cod sursa(job #2054953)
Utilizator | Data | 2 noiembrie 2017 18:09:47 | |
---|---|---|---|
Problema | Deque | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.56 kb |
#include <fstream>
#include <iostream>
using namespace std;
const int N=50000001;
ifstream in("deque.in");
ofstream out("deque.out");
int v[N];
int d[N];
int main()
{
int st,dr,k,n;
long long sum;
in>>n>>k;
st=0;
dr=-1;
sum=0;
for(int i=0; i<n; i++)
{
in>>v[i];
if(st<=dr&&d[st]==i-k)
{
st++;
}
while(st<=dr&&v[i]<=v[d[dr]])
{
dr--;
}
d[++dr]=i;
if(i>=k-1)
{
sum+=v[d[st]];
}
}
out<<sum;
return 0;
}