运行 ID: 75710

Main.cc: In function ‘int main()’:
Main.cc:10:14: error: expected initializer before ‘==’ token
     double nn==mm/500-2;
              ^~
Main.cc:13:20: error: ‘nn’ was not declared in this scope
         int N=ceil(nn);
                    ^~
Main.cc:13:20: note: suggested alternative: ‘n’
         int N=ceil(nn);
                    ^~
                    n