#include <iostream>
#include <algorithm>
int main () {
std::array<int, 9> arr = {27, 5, 7, 13, 19, 7, 3, 1, 31};
if (std::all_of(arr.begin(), arr.end(), [](int n){return n % 2;}))
std::cout << "All the elements are odd";
else
std::cout << "Not all the elements are odd";
return 0;
}
/*
run:
All the elements are odd
*/