/in/foo.cc: In function 'int main()':
/in/foo.cc:5:14: warning: unused variable 'h' [-Wunused-variable]
  int N,n,g=1,h,cut=0,cat=0;
              ^
/in/foo.cc:5:22: warning: unused variable 'cat' [-Wunused-variable]
  int N,n,g=1,h,cut=0,cat=0;
                      ^~~