/in/foo.cc: In function 'int main()':
/in/foo.cc:7:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
    7 |         if(G<300)
      |           ^
/in/foo.cc:12:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
   12 |         if(G>=300)
      |           ^