What will be the output of the following C++ code?

#include <iostream> 
#include <vector> 
 
using namespace std; 
 
int main() 
{ 
    vector<int> v; 
 
    for (int i = 1; i <= 5; i++) 
        v.push_back(i); 
 
    vector<int> :: const_iterator i;
    i = v.begin();
    *i = 3;
   	for (i = v.begin(); i != v.end(); ++i) 
        cout << *i << " ";
    cout<<endl;
 
    return 0; 
}