/**
 * @author n685
 * @brief
 * @date 2024-11-02 10:54:24
 *
 *
 */
#include "bits/stdc++.h"

#ifdef LOCAL
#include "dd/debug.h"
#else
#define dbg(...) 42
#define dbg_proj(...) 420
#define dbg_rproj(...) 420420
void nline() {}
void bar() {}
void start_clock() {}
void end_clock() {}
#endif

namespace rs = std::ranges;
namespace rv = std::views;

inline namespace bigint {

// based on https://cp-algorithms.com/algebra/big-integer.html
struct BigInt {
  static constexpr int LG = 1;
  static constexpr int BASE = []() -> int {
    int ans = 1;
    for (int i = 0; i < LG; ++i) {
      ans *= 10;
    }
    return ans;
  }();
  std::vector<int> a;
  BigInt() = default;
  explicit BigInt(std::integral auto val) {
    while (val > 0) {
      a.push_back(static_cast<int>(val % BASE));
      val /= BASE;
    }
  }
  explicit BigInt(const std::string& s) {
    for (int i = static_cast<int>(s.size()) - 1; i >= 0; i -= LG) {
      if (i < LG) {
        a.push_back(std::stoi(s.substr(0, i + 1)));
      } else {
        a.push_back(std::stoi(s.substr(i - LG + 1, LG)));
      }
    }
    trim();
  }
  explicit BigInt(const std::vector<int>& v) : a(v) {}
  friend std::istream& operator>>(std::istream& in, BigInt& val) {
    std::string s;
    in >> s;
    val = BigInt{s};
    return in;
  }
  friend std::ostream& operator<<(std::ostream& out, const BigInt& val) {
    for (int i : val.a | rv::reverse) {
      out << i;
    }
    return out;
  }
  void trim() {
    while (!a.empty() && a.back() == 0) {
      a.pop_back();
    }
  }
  BigInt& operator+=(const BigInt& rhs) {
    int carry = 0;
    for (int i = 0; i < std::max(std::ssize(a), std::ssize(rhs.a)) || carry > 0; ++i) {
      if (i == std::ssize(a)) {
        a.push_back(0);
      }
      a[i] += carry + (i < std::ssize(rhs.a) ? rhs.a[i] : 0);
      carry = (a[i] >= BASE) ? 1 : 0;
      if (a[i] >= BASE) {
        a[i] -= BASE;
      }
    }
    return *this;
  }
  BigInt& operator-=(const BigInt& rhs) {
    int carry = 0;
    for (int i = 0; i < std::ssize(rhs.a) || carry > 0; ++i) {
      a[i] -= carry + (i < std::ssize(rhs.a) ? rhs.a[i] : 0);
      carry = (a[i] < 0) ? 1 : 0;
      if (a[i] < 0) {
        a[i] += BASE;
      }
    }
    trim();
    return *this;
  }
  BigInt& operator*=(int rhs) {
    assert(rhs < BASE);
    int carry = 0;
    for (int i = 0; i < std::ssize(a) || carry > 0; ++i) {
      if (i == std::ssize(a)) {
        a.push_back(0);
      }
      int64_t cur = carry + int64_t{a[i]} * rhs;
      a[i] = static_cast<int>(cur % BASE);
      carry = static_cast<int>(cur / BASE);
    }
    return *this;
  }
  friend BigInt operator*(const BigInt& lhs, const BigInt& rhs) {
    BigInt ans;
    ans.a.resize(lhs.a.size() + rhs.a.size());
    for (int i = 0; i < std::ssize(lhs.a); ++i) {
      for (int j = 0, carry = 0; j < std::ssize(rhs.a) || carry > 0; ++j) {
        int64_t cur
          = ans.a[i + j] + int64_t{lhs.a[i]} * (j < std::ssize(rhs.a) ? rhs.a[j] : 0) + carry;
        ans.a[i + j] = static_cast<int>(cur % BASE);
        carry = static_cast<int>(cur / BASE);
      }
    }
    ans.trim();
    return ans;
  }
  BigInt& operator*=(const BigInt& rhs) { return *this = *this * rhs; }
  int div_mod(int rhs) {
    int carry = 0;
    for (int i = static_cast<int>(a.size()) - 1; i >= 0; --i) {
      int64_t cur = a[i] + int64_t{carry} * BASE;
      a[i] = static_cast<int>(cur / rhs);
      carry = static_cast<int>(cur % rhs);
    }
    trim();
    return carry;
  }
  BigInt& operator/=(int rhs) {
    div_mod(rhs);
    return *this;
  }
  int operator%(int rhs) {
    int carry = 0;
    for (int i = static_cast<int>(a.size()) - 1; i >= 0; --i) {
      carry = static_cast<int>((a[i] + int64_t{carry} * BASE) % rhs);
    }
    return carry;
  }
  bool operator==(const BigInt& rhs) const = default;
  bool operator!=(const BigInt& rhs) const = default;
  auto operator<=>(const BigInt& rhs) const {
    if (a.size() != rhs.a.size()) {
      return a.size() <=> rhs.a.size();
    }
    for (int i = static_cast<int>(a.size()) - 1; i >= 0; --i) {
      if (a[i] != rhs.a[i]) {
        return a[i] <=> rhs.a[i];
      }
    }
    return std::strong_ordering::equal;
  }
};
BigInt operator+(BigInt a, const BigInt& b) { return a += b; }
BigInt operator-(BigInt a, const BigInt& b) { return a -= b; }
BigInt operator*(BigInt a, int b) { return a *= b; }
BigInt operator*(int b, BigInt a) { return a *= b; }

} // namespace bigint

#if defined(LOCAL) && __cplusplus >= 202302L
template <> struct std::formatter<BigInt, char> {
  std::formatter<std::string, char> underlying;
  constexpr formatter() {
    if constexpr (requires { underlying.set_debug_format(); }) {
      underlying.set_debug_format();
    }
  }
  template <class ParseContext> constexpr auto parse(ParseContext& ctx) {
    return underlying.parse(ctx);
  }
  template <class FormatContext> auto format(const BigInt& val, FormatContext& ctx) const {
    return underlying.format(std::stringstream{} << val, ctx);
  }
};
#endif
namespace multihash {

template <class T> constexpr std::pair<T, T> ex_eucl(T a, T b) {
  if (a < b) {
    auto [x, y] = ex_eucl(b, a);
    return {y, x};
  }
  if (b == 0) {
    assert(a == 1);
    return {1, 0};
  }
  auto [x, y] = ex_eucl(b, a % b);
  return {y, x - (a / b) * y};
}

template <int NUM> struct MultiHash {
  static constexpr int MAX = 1'000'000'007;
  // static inline const std::array<int, NUM> mods = []() {
  //   std::mt19937 rng(std::chrono::steady_clock::now().time_since_epoch().count());
  //   std::uniform_int_distribution<int> rnd(10000, MAX);
  //   std::array<int, NUM> ans{};
  //   for (int& v : ans) {
  //     v = rnd(rng);
  //   }
  //   return ans;
  // }();
  static inline const std::array<int, NUM> mods{1'000'000'007, 1'000'000'009, 998'244'353};
  template <class T> static constexpr T normalize(std::integral auto val, T mod) {
    using U = decltype(mod + val);
    U uval = static_cast<U>(val);
    U umd = static_cast<U>(mod);
    if (uval <= -umd || umd <= uval) {
      uval %= umd;
    }
    if (val < 0) {
      uval += umd;
    }
    return static_cast<T>(uval);
  }

  std::array<int, NUM> vals{};
  MultiHash() = default;
  explicit MultiHash(std::integral auto val) {
    for (int i = 0; i < NUM; ++i) {
      vals[i] = normalize(val, mods[i]);
    }
  }
  MultiHash& operator+=(const MultiHash& rhs) {
    for (int i = 0; i < NUM; ++i) {
      vals[i] += rhs.vals[i];
      if (vals[i] >= mods[i]) {
        vals[i] -= mods[i];
      }
    }
    return *this;
  }
  friend MultiHash operator+(MultiHash lhs, const MultiHash& rhs) { return lhs += rhs; }
  MultiHash& operator-=(const MultiHash& rhs) {
    for (int i = 0; i < NUM; ++i) {
      vals[i] -= rhs.vals[i];
      if (vals[i] < 0) {
        vals[i] += mods[i];
      }
    }
    return *this;
  }
  MultiHash operator-() const {
    MultiHash ans;
    for (int i = 0; i < NUM; ++i) {
      ans.vals[i] = normalize(-vals[i], mods[i]);
    }
    return ans;
  }
  friend MultiHash operator-(MultiHash lhs, const MultiHash& rhs) { return lhs -= rhs; }
  MultiHash& operator*=(const MultiHash& rhs) {
    for (int i = 0; i < NUM; ++i) {
      vals[i] = static_cast<int>(int64_t{vals[i]} * rhs.vals[i] % mods[i]);
    }
    return *this;
  }
  friend MultiHash operator*(MultiHash lhs, const MultiHash& rhs) { return lhs *= rhs; }

  MultiHash binpow(std::integral auto b) const {
    MultiHash res{1}, a = *this;
    while (b > 0) {
      if (b % 2 == 1) {
        res *= a;
      }
      a *= a;
      b /= 2;
    }
    return res;
  }
  MultiHash inv() const {
    MultiHash ans;
    for (int i = 0; i < NUM; ++i) {
      ans.vals[i] = normalize(ex_eucl<int64_t>(vals[i], mods[i]).first);
    }
    return ans;
  }
  bool operator==(const MultiHash& rhs) const = default;
  auto operator<=>(const MultiHash& rhs) const = default;
};

} // namespace multihash

using Hash = multihash::MultiHash<3>;
constexpr int MX = 10;

int main() {
#ifndef LOCAL
  std::ios::sync_with_stdio(false);
  std::cin.tie(nullptr);
#endif

  const std::array<Hash, MX + 1> digits = []() {
    std::array<Hash, MX + 1> ans{};
    for (int i = 0; i <= 10; ++i) {
      ans[i] = Hash{i};
    }
    return ans;
  }();

  int n, k;
  std::cin >> n >> k;

  BigInt m{std::vector(k, 9)};
  Hash hm;
  for (int j : m.a | rv::reverse) {
    hm = digits[10] * hm + Hash{j};
  }

  std::vector<Hash> a(n);
  for (int i = 0; i < n; ++i) {
    BigInt v;
    std::cin >> v;
    while (v > m) {
      BigInt nv;
      for (int j = 0; j < std::ssize(v.a); j += k) {
        nv += BigInt{
          std::vector(v.a.begin() + j, v.a.begin() + std::min(j + k, static_cast<int>(v.a.size())))
        };
      }
      v = nv;
    }
    if (v == m) {
      v = BigInt{0};
    }
    for (int j : v.a | rv::reverse) {
      a[i] = digits[10] * a[i] + Hash{j};
    }
  }
  std::map<Hash, int> freq;
  int ans = 0;
  Hash hm2 = digits[2] * hm;
  for (int i = 0; i < n; ++i) {
    ++freq[a[i]];
    for (int j = i; j < n; ++j) {
      Hash sum = a[i] + a[j];
      if (freq.contains(-sum)) {
        ans += freq[-sum];
      }
      if (freq.contains(hm - sum)) {
        ans += freq[hm - sum];
      }
      if (freq.contains(hm2 - sum)) {
        ans += freq[hm2 - sum];
      }
    }
  }
  std::cout << ans << '\n';
}