Cod sursa(job #1379895)
Utilizator | Data | 6 martie 2015 20:09:46 | |
---|---|---|---|
Problema | Deque | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.59 kb |
#include <fstream>
#include <deque>
using namespace std;
#define NMax 5000005
ifstream f("deque.in");
ofstream g("deque.out");
deque<int> dq;
int v[NMax];
int n,k;
long long sum;
int main()
{
f>>n>>k;
for(int i=1;i<=n;++i)
{
f>>v[i];
while(!dq.empty() && v[dq.back()] > v[i])
{
dq.pop_back();
}
while(!dq.empty() && dq.front() < i-k+1) dq.pop_front();
dq.push_back(i);
if(i >= k) sum += v[dq.front()];
}
g<<sum<<"\n";
f.close();
g.close();
return 0;
}