#include <iostream>

#include <vector>

#include <algorithm>

using namespace std;

​

int main() {

  vector<int> numbers = {1, 7, 3, 5, 9, 2};

  vector<int> other = {9, 7, 5, 3, 2, 1};

​

  if (is_permutation(numbers.begin(), numbers.end(), other.begin())) {

    cout << "Permutation found";

  } else {

    cout << "No permutation found";

  }

  return 0;

}

​