#ifndef DEBUG
#  define NDEBUG
#endif
#include <iostream>
#include <algorithm>
#include <string>
#include <iterator>
#include <utility>
#include <type_traits>
#include <limits>
#include <cassert>
#include <numeric>
#include <vector>
#include <array>
#include <set>
#include <map>

using namespace std;

// template {{{
// misc {{{
using Z = long long;
[[maybe_unused]]
constexpr Z INF = numeric_limits<Z>::max() / 3;
// }}}

// debug {{{
template <class T>
using enable_if_sequence_t = enable_if_t<
  is_same<
    typename iterator_traits<
      typename remove_cv_t<remove_reference_t<T>>::iterator
    >::iterator_category,
    random_access_iterator_tag>{}>;
#ifdef NDEBUG
# define dump(x)
# define debug if (0)
template <class T>
inline T&& ix(T&& value) { return value; }
template <class T, class Index, class... Indices, class = enable_if_sequence_t<T>>
inline auto&& ix(T&& container, Index index, Indices... indices) {
  return ix(container[index], indices...);
}
#else
# define dump(x) do { \
    cerr << "\e[33m[dump: " << __LINE__ << "] " << (#x) << " = " << x << "\e[0m" << endl; \
  } while (0);
# define debug
template <class T>
inline auto&& ix_impl([[maybe_unused]] int line, [[maybe_unused]] const char* code, T&& value) {
  return value;
}
template <class T, class Index, class... Indices, class = enable_if_sequence_t<T>>
inline auto&& ix_impl(int line, const char* code, T&& container, Index index, Indices... indices) {
  if (index < 0) {
    cerr << "\e[31mix: negative index at line " << line << ", ix(" << code << ")\n"
      << "index = " << index << "\e[0m" << endl;
    exit(1);
  }
  int size = distance(begin(container), end(container));
  if (index >= size) {
    cerr << "\e[31mix: index out of range at line " << line << ", ix(" << code << ")\n"
      << "index = " << index << " whereas size = " << size << "\e[0m" << endl;
    exit(1);
  }
  return ix_impl(line, code, container[index], indices...);
}
#define ix(...) ix_impl(__LINE__, #__VA_ARGS__, __VA_ARGS__)
#endif
// }}}

// IO {{{
template <class T, class U>
ostream& operator<< (ostream& os, pair<T, U> p) {
  os << '(' << p.first << ", " << p.second << ')';
  return os;
}
template <class T, class U>
istream& operator>> (istream& is, pair<T, U>& p) {
  is >> p.first >> p.second;
  return is;
}
template <class T>
false_type is_container_impl(...);
template <class T, class = typename T::iterator>
true_type is_container_impl(T);
template <class T>
struct is_container : decltype(is_container_impl<T>(declval<T>())) {};
template <>
struct is_container <string> : std::false_type {};
template <class Container, class = enable_if_t<is_container<Container>{}>>
istream& operator>> (istream& is, Container& cont) {
  for (auto& v : cont) is >> v;
  return is;
}
template <class Container, class = enable_if_t<is_container<Container>{}>>
ostream& operator<< (ostream& os, Container const& cont) {
  bool first = true;
  constexpr char sep =
    is_container<typename Container::value_type>{} ? '\n' : ' ';
  for (auto const& v : cont) {
    if (!first) {
      os << sep;
    }
    first = false;
    os << v;
  }
  return os;
}
template <class T>
void conclude(T const& message) {
  cout << message << endl;
  exit(0);
}
// }}}
// }}}


// {{{ fenwick
template <class Group>
class fenwick {
  public:
    using value_type = typename Group::value_type;
  private:
    int len;
    vector<value_type> data;
  public:
    fenwick(int n): len(n + 1), data(len, Group::identity) {}
    value_type product(int k) const { // excluding k
      value_type total = Group::identity;
      for (int i = k; i > 0; i -= i & -i) {
        total = Group::product(ix(data, i), total);
      }
      return total;
    }
    void multiply(int pos, value_type x) {
      pos++;
      for (int i = pos; i < len; i += i & -i) {
        ix(data, i) = Group::product(ix(data, i), x);
      }
    }
};
// }}}

struct Z_add {
  using value_type = Z;
  static constexpr Z identity = 0;
  static inline constexpr Z product(Z x, Z y) {
    return x + y;
  }
};



int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.precision(10);
  cout << fixed;
  Z N, K;
  cin >> N >> K;
  vector<Z> as(N);
  cin >> as;
  vector<Z> ps(N + 1);
  for (auto i = N - 1; i >= 0; i--) {
    ix(ps, i) = ix(ps, i + 1) + ix(as, i);
  }
  set<Z> vals;
  for (auto i = 0; i <= N; i++) {
    vals.insert(ix(ps, i) + K * i);
  }
  map<Z, Z> compressed;
  Z next_unused = 0;
  for (auto&& v : vals) {
    compressed[v] = next_unused;
    next_unused++;
  }
  fenwick<Z_add> fwt(vals.size() + 1);
  Z ans = 0;
  for (auto i = 0; i <= N; i++) {
    Z v = ix(ps, i) + K * i;
    ans += fwt.product(compressed[v] + 1);
    fwt.multiply(0, 1);
    fwt.multiply(compressed[v] + 1, -1);
  }
  cout << ans << '\n';
}



Measured memory_bytes: 26880