/in/foo.cc: In function 'int main()':
/in/foo.cc:7:6: warning: unused variable 'mt' [-Wunused-variable]
  int mt=0,money=0,ans=0;
      ^~
/in/foo.cc:7:19: warning: unused variable 'ans' [-Wunused-variable]
  int mt=0,money=0,ans=0;
                   ^~~