#include #define REP_(i, a_, b_, a, b, ...) \ for (int i = (a), _Z_##i = (b); i < _Z_##i; ++i) #define REP(i, ...) REP_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__) #define ALL(x) std::begin(x), std::end(x) using i64 = long long; using u64 = unsigned long long; template inline bool chmax(T &a, U b) { return a < b and ((a = std::move(b)), true); } template inline bool chmin(T &a, U b) { return a > b and ((a = std::move(b)), true); } template inline int ssize(const T &a) { return (int)std::size(a); } template std::istream &operator>>(std::istream &is, std::vector &a) { for (auto &x : a) is >> x; return is; } template std::ostream &print_seq(const Container &a, std::string_view sep = " ", std::string_view ends = "\n", std::ostream &os = std::cout) { auto b = std::begin(a), e = std::end(a); for (auto it = std::begin(a); it != e; ++it) { if (it != b) os << sep; os << *it; } return os << ends; } template struct is_iterable : std::false_type {}; template struct is_iterable())), decltype(std::end(std::declval()))>> : std::true_type {}; template ::value && !std::is_same::value && !std::is_same::value>> std::ostream &operator<<(std::ostream &os, const T &a) { return print_seq(a, ", ", "", (os << "{")) << "}"; } template std::ostream &operator<<(std::ostream &os, const std::pair &a) { return os << "(" << a.first << ", " << a.second << ")"; } #ifdef ENABLE_DEBUG template void pdebug(const T &value) { std::cerr << value; } template void pdebug(const T &value, const Ts &...args) { pdebug(value); std::cerr << ", "; pdebug(args...); } #define DEBUG(...) \ do { \ std::cerr << " \033[33m (L" << __LINE__ << ") "; \ std::cerr << #__VA_ARGS__ << ":\033[0m "; \ pdebug(__VA_ARGS__); \ std::cerr << std::endl; \ } while (0) #else #define pdebug(...) #define DEBUG(...) #endif using namespace std; template struct LazySegTree { using T = typename LazyMonoid::T; using F = typename LazyMonoid::F; inline int n() const { return n_; } inline int offset() const { return offset_; } explicit LazySegTree(int n) : LazySegTree(std::vector(n, LazyMonoid::id())) {} explicit LazySegTree(const std::vector &v) : n_(int(v.size())) { offset_ = 1; for (bits_ = 0; offset_ < n_; ++bits_) { offset_ <<= 1; } data_.assign(2 * offset_, LazyMonoid::id()); lazy_ = std::vector(offset_, LazyMonoid::f_id()); for (int i = 0; i < n_; i++) data_[offset_ + i] = v[i]; for (int i = offset_ - 1; i >= 1; i--) { update(i); } } void set(int p, T x) { assert(0 <= p && p < n_); p += offset_; // Update the leaf. for (int i = bits_; i >= 1; i--) push(p >> i); data_[p] = x; // Update its ancestors. for (int i = 1; i <= bits_; i++) update(p >> i); } const T &operator[](int p) const { assert(0 <= p && p < n_); p += offset_; for (int i = bits_; i >= 1; i--) push(p >> i); return data_[p]; } T fold(int l, int r) const { assert(0 <= l && l <= r && r <= n_); if (l == r) return LazyMonoid::id(); l += offset_; r += offset_; for (int i = bits_; i >= 1; i--) { if (((l >> i) << i) != l) push(l >> i); if (((r >> i) << i) != r) push(r >> i); } T sml = LazyMonoid::id(), smr = LazyMonoid::id(); while (l < r) { if (l & 1) sml = LazyMonoid::op(sml, data_[l++]); if (r & 1) smr = LazyMonoid::op(data_[--r], smr); l >>= 1; r >>= 1; } return LazyMonoid::op(sml, smr); } T fold_all() const { return data_[1]; } void apply(int p, F f) { assert(0 <= p && p < n_); p += offset_; for (int i = bits_; i >= 1; i--) push(p >> i); data_[p] = LazyMonoid::apply(f, data_[p]); for (int i = 1; i <= bits_; i++) update(p >> i); } void apply(int l, int r, F f) { assert(0 <= l && l <= r && r <= n_); if (l == r) return; l += offset_; r += offset_; for (int i = bits_; i >= 1; i--) { if (((l >> i) << i) != l) push(l >> i); if (((r >> i) << i) != r) push((r - 1) >> i); } { int l2 = l, r2 = r; while (l < r) { if (l & 1) apply_all(l++, f); if (r & 1) apply_all(--r, f); l >>= 1; r >>= 1; } l = l2; r = r2; } for (int i = 1; i <= bits_; i++) { if (((l >> i) << i) != l) update(l >> i); if (((r >> i) << i) != r) update((r - 1) >> i); } } template int max_right(int l) const { return max_right(l, [](T x) { return g(x); }); } template int max_right(int l, G g) const { assert(0 <= l && l <= n_); assert(g(LazyMonoid::id())); if (l == n_) return n_; l += offset_; for (int i = bits_; i >= 1; i--) push(l >> i); T sm = LazyMonoid::id(); do { while (l % 2 == 0) l >>= 1; if (!g(LazyMonoid::op(sm, data_[l]))) { while (l < offset_) { push(l); l = (2 * l); if (g(LazyMonoid::op(sm, data_[l]))) { sm = LazyMonoid::op(sm, data_[l]); l++; } } return l - offset_; } sm = LazyMonoid::op(sm, data_[l]); l++; } while ((l & -l) != l); return n_; } template int min_left(int r) const { return min_left(r, [](T x) { return g(x); }); } template int min_left(int r, G g) const { assert(0 <= r && r <= n_); assert(g(LazyMonoid::id())); if (r == 0) return 0; r += offset_; for (int i = bits_; i >= 1; i--) push((r - 1) >> i); T sm = LazyMonoid::id(); do { r--; while (r > 1 && (r % 2)) r >>= 1; if (!g(LazyMonoid::op(data_[r], sm))) { while (r < offset_) { push(r); r = (2 * r + 1); if (g(LazyMonoid::op(data_[r], sm))) { sm = LazyMonoid::op(data_[r], sm); r--; } } return r + 1 - offset_; } sm = LazyMonoid::op(data_[r], sm); } while ((r & -r) != r); return 0; } friend std::ostream &operator<<(std::ostream &os, const LazySegTree &st) { os << "["; for (int i = 0; i < st.n(); ++i) { if (i != 0) os << ", "; const auto &x = st[i]; os << x; } return os << "]"; } private: void update(int k) { data_[k] = LazyMonoid::op(data_[2 * k], data_[2 * k + 1]); } void apply_all(int k, F f) const { data_[k] = LazyMonoid::f_apply(f, data_[k]); if (k < offset_) lazy_[k] = LazyMonoid::f_compose(f, lazy_[k]); } void push(int k) const { apply_all(2 * k, lazy_[k]); apply_all(2 * k + 1, lazy_[k]); lazy_[k] = LazyMonoid::f_id(); } int n_, offset_, bits_; mutable std::vector data_; mutable std::vector lazy_; }; struct AssignSum { struct T { long long sum; int width; }; using F = std::optional; // Fold: Sum static T op(const T &x, const T &y) { return {x.sum + y.sum, x.width + y.width}; } static constexpr T id() { return {0, 0}; } // Update: Assign static T f_apply(const F &f, const T &x) { return f ? T{(*f) * x.width, x.width} : x; } static F f_compose(const F &f, const F &g) { return f ? f : g; } static constexpr F f_id() { return std::nullopt; } }; #include #include #include template using rb_tree_set = __gnu_pbds::tree, __gnu_pbds::rb_tree_tag, __gnu_pbds::tree_order_statistics_node_update>; template using rb_tree_map = __gnu_pbds::tree, __gnu_pbds::rb_tree_tag, __gnu_pbds::tree_order_statistics_node_update>; struct AddMin { using T = long long; using F = long long; // Fold: Min static T op(const T &x, const T &y) { return std::min(x, y); } static constexpr T id() { return std::numeric_limits::max(); } // Update: Add static T f_apply(const F &f, const T &x) { return f + x; } static F f_compose(const F &f, const F &g) { return f + g; } static constexpr F f_id() { return 0; } }; int main() { ios_base::sync_with_stdio(false), cin.tie(nullptr); int n, q; cin >> n >> q; vector a(n); cin >> a; vector b(n); REP(i, n) { b[i] = {a[i], 1}; } LazySegTree seg(move(b)); rb_tree_set index; REP(i, n) index.insert(i); index.insert(n); REP(qi, q) { int t, l, r; cin >> t >> l >> r; --l; auto pl = index.find_by_order(l); auto pr = index.find_by_order(r); auto res = seg.fold(*pl, *pr); if (t == 2) { cout << res.sum << "\n"; continue; } if (*pl != *pr) { seg.apply(*pl, *pr, 0LL); seg.set(*pl, {res.sum, 1LL}); for (++pl; pl != pr;) { pl = index.erase(pl); } } } }