Cod sursa(job #1257729)
Utilizator | Data | 8 noiembrie 2014 09:53:35 | |
---|---|---|---|
Problema | Deque | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.62 kb |
#include <iostream>
#include <cstdio>
#include <queue>
using namespace std;
deque <int> dq;
int a[5000005], n, k;
int main()
{
long long s=0;
freopen("deque.in", "r", stdin);
freopen("deque.out", "w", stdout);
scanf("%i %i", &n, &k);
for(int i=1; i<=n; i++)
scanf("%i", &a[i]);
for(int i=1; i<=n; i++)
{
if(!dq.empty() && dq.front()==i-k)
dq.pop_front();
while(!dq.empty() && a[dq.back()]>=a[i])
dq.pop_back();
dq.push_back(i);
if(i>=k)
s+=a[dq.front()];
}cout<<s;
return 0;
}