#pragma GCC optimize("Ofast") #include "bits/stdc++.h" #pragma region // Begin Header {{{ using namespace std; #ifndef DEBUG #define dump(...) #endif #define all(x) begin(x), end(x) #define rall(x) rbegin(x), rend(x) #define rep(i, b, e) for (intmax_t i = (b), i##_limit = (e); i < i##_limit; ++i) #define repc(i, b, e) for (intmax_t i = (b), i##_limit = (e); i <= i##_limit; ++i) #define repr(i, b, e) for (intmax_t i = (b), i##_limit = (e); i >= i##_limit; --i) #define var(Type, ...) Type __VA_ARGS__; input(__VA_ARGS__) constexpr size_t operator""_zu(unsigned long long value) { return value; }; constexpr intmax_t operator""_jd(unsigned long long value) { return value; }; constexpr uintmax_t operator""_ju(unsigned long long value) { return value; }; constexpr int INF = 0x3f3f3f3f; constexpr intmax_t LINF = 0x3f3f3f3f3f3f3f3f_jd; using usize = size_t; using imax = intmax_t; using uimax = uintmax_t; using ld = long double; template > using MaxHeap = priority_queue, Compare>; template > using MinHeap = priority_queue, Compare>; inline void input() {} template inline void input(Head&& head, Tail&&... tail) { cin >> head; input(forward(tail)...); } template ::value, nullptr_t> = nullptr> inline istream& operator>>(istream &is, Container &vs) { for (auto &v: vs) is >> v; return is; } template inline istream& operator>>(istream &is, pair &p) { is >> p.first >> p.second; return is; } inline void output() { cout << "\n"; } template inline void output(Head&& head, Tail&&... tail) { cout << head; if (sizeof...(tail)) cout << " "; output(forward(tail)...); } template ::value, nullptr_t> = nullptr> inline ostream& operator<<(ostream &os, const Container &vs) { static constexpr const char *delim[] = {" ", ""}; for (auto it = begin(vs); it != end(vs); ++it) { os << delim[it == begin(vs)] << *it; } return os; } template inline void join(const Iterator &Begin, const Iterator &End, const string &delim = "\n", const string &last = "\n") { for (auto it = Begin; it != End; ++it) { cout << ((it == Begin) ? "" : delim) << *it; } cout << last; } template inline vector makeVector(const T &init_value, size_t sz) { return vector(sz, init_value); } template inline auto makeVector(const T &init_value, size_t sz, Args... args) { return vector(init_value, args...))>(sz, makeVector(init_value, args...)); } template class FixPoint : Func { public: explicit constexpr FixPoint(Func&& f) noexcept : Func(forward(f)) {} template constexpr decltype(auto) operator()(Args&&... args) const { return Func::operator()(*this, std::forward(args)...); } }; template static inline constexpr decltype(auto) makeFixPoint(Func&& f) noexcept { return FixPoint{forward(f)}; } template struct reverse_t { Container &c; reverse_t(Container &c) : c(c) {} auto begin() { return c.rbegin(); } auto end() { return c.rend(); } }; template auto reversed(Container &c) { return reverse_t(c); } template inline bool chmax(T &a, const T &b) noexcept { return b > a && (a = b, true); } template inline bool chmin(T &a, const T &b) noexcept { return b < a && (a = b, true); } template inline T diff(const T &a, const T &b) noexcept { return a < b ? b - a : a - b; } void operator|=(vector::reference lhs, const bool rhs) { lhs = lhs | rhs; } void ioinit() { ios_base::sync_with_stdio(false); cin.tie(nullptr); cout << fixed << setprecision(10); cerr << fixed << setprecision(10); clog << fixed << setprecision(10); } // }}} End Header #pragma endregion int main() { ioinit(); var(intmax_t, N, M, X, Y, Z); vector as(N); input(as); vector vs; intmax_t num = 0, sum = 0; for (const auto a: as) { if (Y < a && a < X) { vs.emplace_back(a); } else if (X <= a) { num++; sum += a; } } sort(all(vs)); dump(vs, num, sum); if (num > M) { return output("Handicapped"), 0; } const int V = vs.size(); auto dp = makeVector(0, V + 1, M + 1, 2501); // dp[i][j][k] := 現在 i 番目、j 個選んだ、総和 k となる通り数 dp[0][0][0] = 1; rep(i, 0, V) repc(j, 0, M) repc(k, 0, 2500) { dp[i + 1][j][k] += dp[i][j][k]; if (j - 1 >= 0 && k - vs[i] >= 0) { dp[i + 1][j][k] += dp[i][j - 1][k - vs[i]]; } } intmax_t res = 0; // dp[V][num + j][sum + k] repc(j, 0, M) repc(k, 0, 2500) { if (num + j <= M && sum + k <= 2500) { const int numer = sum + k; const int denom = num + j; if (denom != 0 && numer % denom == 0 && numer / denom == Z) res += dp[V][j][k]; } } output(res); return 0; }