DEN C++

#include<bits/stdc++.h>
using namespace std;

long long int n,k;
bool a[1000]={0};
long long int dem =  0;

int main()
{
    freopen("DEN.inp","r",stdin);
    freopen("DEN.out","w",stdout);

    cin >> n >> k;
    for(long long int i = 1; i <= k; i++)
    {
        for(long long int j = 1; j <= n; j++)
        {
            if(j%(i+1) == 0)
            {
                a[j] = 1-a[j];
            }
        }
    }
    for(long long int i = 1; i <= n; i++)
    {
        if(a[i] == 1)
        {
            dem++;
        }
    }
    cout << dem;
    return 0;
}