#include <algorithm>
#include <iostream>
#include <iterator>
#include <vector>
 
using namespace std;
 
int main() 
{
    std::vector<int> a;
 
    cout << "Enter a sequence of numbers: ";
 
    std::copy(std::istream_iterator<int>(cin),
              std::istream_iterator<int>(),
              std::back_inserter(a));
 
    cout << "You've entered: ";     
    for (auto& num : a)
    {
        cout << num << " ";
    }
    cout << endl;
 
    return 0;
}
 

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