#include <vector>
#include <iterator>
#include <algorithm>
#include <iostream>
 
using namespace std;
 
const int spaceSize = 10;
 
void Negate(vector<double>& x, vector<double>& y)
{
    // transform(x.begin(), x.end(), back_inserter(y), negate<double>());
    transform(x.begin(), x.end(), y.begin(), negate<double>());
}
 
 
int main()
{
    vector<double> one, two;
    for(int i = 0; i < spaceSize; i++)
    {
        one.push_back(2.0 * i);
        two.push_back(1.0 * i);
    }
 
    Negate(one, two);
 
    copy(two.begin(), two.end(), ostream_iterator<int>(cout, "\n"));
    return 0;
}
 

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