#include <iostream>
#include <vector>
#include <algorithm>

int main() {
    std::vector<int> v = {1,2,3,3,4,5};
    auto it = std::unique(v.begin(), v.end());
    std::cout << ((it == v.end()) ? "Unique\n" : "Duplicate(s)\n");
    return 0;
}