---

Lỗi biên dịch:

Main.cc:60:5: error: redefinition of ‘int main()’
   60 | int main()
      |     ^~~~
Main.cc:32:5: note: ‘int main()’ previously defined here
   32 | int main()
      |     ^~~~
Main.cc: In function ‘int main()’:
Main.cc:36:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   36 |         scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
Main.cc:39:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   39 |                 scanf("%d", &arr1[i]);
      |                 ~~~~~^~~~~~~~~~~~~~~~
Main.cc:42:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   42 |         scanf("%d", &m);
      |         ~~~~~^~~~~~~~~~
Main.cc:45:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   45 |                 scanf("%d", &arr2[j]);
      |                 ~~~~~^~~~~~~~~~~~~~~~
Main.cc: In function ‘int main()’:
Main.cc:64:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   64 |         scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
Main.cc:67:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   67 |                 scanf("%d", &arr1[i]);
      |                 ~~~~~^~~~~~~~~~~~~~~~
Main.cc:70:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   70 |         scanf("%d", &m);
      |         ~~~~~^~~~~~~~~~
Main.cc:73:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   73 |                 scanf("%d", &arr2[j]);
      |                 ~~~~~^~~~~~~~~~~~~~~~