/in/foo.cc: In function 'int main()':
/in/foo.cc:5:2: error: expected initializer before 'int'
  int n;
  ^~~
/in/foo.cc:6:29: error: 'k' was not declared in this scope
  cin >> h >> s >> v >> l >> k >> n;
                             ^
/in/foo.cc:6:34: error: 'n' was not declared in this scope
  cin >> h >> s >> v >> l >> k >> n;
                                  ^
/in/foo.cc:7:6: warning: unused variable 'last' [-Wunused-variable]
  int last,first;
      ^~~~
/in/foo.cc:7:11: warning: unused variable 'first' [-Wunused-variable]
  int last,first;
           ^~~~~