Macetas (06/05/2017)

#include <iostream>
#include <vector>
using namespace std;
int main ()
{
    int N=9, S=150, K=3, aux, c=0;
    cin>>N>>S>>K;
    vector <int> precios (N+1,0);
    for (int i=1; i<=N; i++)
    {
        cin>>aux;
        precios[i]=aux;
    }
    for (int i=1; i<=N; i++)
        precios[i]=precios[i]+precios[i-1];
    for (int i=K; i<=N; i++)
        if (precios[i]-precios[i-K]<=S)
            c++;
    cout<<c;

    return 0;
}