What does this C++ snippet output?

1#include <iostream>
2 
3struct Noisy {
4  int id;
5  Noisy(int i) : id(i) { std::cout << "ctor " << id << "\n"; }
6  ~Noisy() { std::cout << "dtor " << id << "\n"; }
7};
8int main() {
9    {
10      Noisy a(1);
11    }
12    std::cout << "after block\n";
13}