#include <iostream>
#include <vector>
using namespace std;


vector<double> fusio(const vector<double>& v1, const vector<double>& v2) {
    int count = 0, count2 = 0;
    bool v1fin = false, v2fin = false;
    vector<double> v(v1.size()+v2.size());
    while (count < v.size()) {
        if (not v1fin) {
            v[count] = v1[count2];
            ++count;
        }
        if (not v2fin) {
            v[count] = v2[count2];
            ++count;
        }
        ++count2;
        if (count2 == v1.size() and not v1fin) v1fin = true;
        if (count2 == v2.size() and not v2fin) v2fin = true;
    }
    return v;
}

int main () {

}