#include <iostream>
#include <vector>
#include <sstream>
#include <iterator>
#include <algorithm>
using namespace std;
int main()
{
vector <int> num = {1, 3, 4, 5};
stringstream ss;
copy(num.rbegin(), num.rend(), ostream_iterator<int>(ss, ""));
int res;
ss >> res;
cout << res;
return 0;
}
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