---

Lỗi biên dịch:

/bin/chown: invalid user: ‘judge’
Main.cc: In function ‘int main()’:
Main.cc:28:24: error: ‘phi’ was not declared in this scope
   28 |         printf("%d\n", phi[N]);
      |                        ^~~
Main.cc:21:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   21 |     scanf("%d", &T);
      |     ~~~~~^~~~~~~~~~
Main.cc:27:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   27 |         scanf("%d", &N);
      |         ~~~~~^~~~~~~~~~