---

Lỗi biên dịch:

Main.cc:28:5: error: expected unqualified-id before ‘return’
     return 0;
     ^~~~~~
Main.cc:29:1: error: expected declaration before ‘}’ token
 }
 ^
Main.cc: In function ‘int main()’:
Main.cc:11:8: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &A);
   ~~~~~^~~~~~~~~~
Main.cc:13:8: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &B);
   ~~~~~^~~~~~~~~~
Main.cc:15:8: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &X);
   ~~~~~^~~~~~~~~~
Main.cc:17:8: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &Y);
   ~~~~~^~~~~~~~~~