Mã chấm: 455794

Main.cc: In function ‘int main()’:
Main.cc:13:16: error: ‘Math’ was not declared in this scope
   13 |         tmp1 = Math.fabs(a - b) / 2;
      |                ^~~~
Main.cc:18:13: error: ‘Math’ was not declared in this scope
   18 |         if (Math.fabs(a - n) < Math.fabs(b - n)) tmp2 = Math.fabs(a - n);
      |             ^~~~