Which lines can be inserted in the specified place so that “12345” appears on the screen? Each option implies that only it is inserted.
#include <iostream>
#include <algorithm>
#include <iterator>
#include <vector>

int main()
    std::vector<int> v = {1, 4, 2, 5, 3, 2, 3};
    // <<< insert here >>>

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