Zeros i uns (2) P45965 ca

// #include <howarto>
#include <iostream>
#include <vector>


using namespace std;

void zeros_i_uns(vector<int> &v ,int i, int u) {
    int n = v.size();
    if (i == n and u == 0) {
        bool primer = true;
        for (int j = 0; j < n; j++) {
            if (primer) {
                primer = false;
                cout << v[j];
            }
            else cout << ' ' << v[j];
        }
        cout << endl;
    }
    else if ((n - i) >= u) {

        zeros_i_uns(v, i + 1, u);
        v[i] = 1;
        if (u > 0) zeros_i_uns(v, i + 1, u - 1);
        v[i] = 0;

    }

}

int main () {
    int n; cin >> n;
    vector<int> v(n, 0);
    int u; cin >> u;
    int i = 0;
    zeros_i_uns(v, i, u);
}