foo.cc: In function ‘int main()’:
foo.cc:35:52: error: expected ‘;’ before ‘)’ token
   35 |         printf("%.0lf\n",(n+m-(2-sqrt(2)))*res)*100);
      |                                                    ^
      |                                                    ;
foo.cc:35:48: warning: value computed is not used [-Wunused-value]
   35 |         printf("%.0lf\n",(n+m-(2-sqrt(2)))*res)*100);
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~