---

Lỗi biên dịch:

Main.cc: In function ‘int dem_so_x_thoa_man(int, int)’:
Main.cc:8:18: error: ‘tinh_bcnn’ was not declared in this scope
    8 |     int bcnn_A = tinh_bcnn(A);
      |                  ^~~~~~~~~
Main.cc:9:18: error: ‘tinh_ucln’ was not declared in this scope
    9 |     int ucln_B = tinh_ucln(B);
      |                  ^~~~~~~~~