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#define PROBLEM "https://judge.yosupo.jp/problem/aplusb" #include "my_template.hpp" #include "ds/wavelet_matrix/wavelet_matrix.hpp" #include "random/base.hpp" void test_compress() { int N = RNG(0, 64); int MAX = RNG(2, 1 << 10); vc<int> A(N); vc<int> X(N); FOR(i, N) X[i] = RNG(MAX); FOR(i, N) A[i] = RNG(MAX); Wavelet_Matrix<int, true> WM(A, X); int Q = 100; FOR(Q) { int L = RNG(0, max(1, N)); int R = RNG(0, max(1, N + 1)); if (L > R) swap(L, R); int lo = RNG(0, MAX); int hi = RNG(0, MAX); if (lo > hi) swap(lo, hi); ++hi; vc<int> B = {A.begin() + L, A.begin() + R}; vc<int> Y = {X.begin() + L, X.begin() + R}; int t = RNG(0, 5); if (t == 0) { // count int cnt = 0; for (auto&& x: B) if (lo <= x && x < hi) cnt += 1; assert(WM.count(L, R, lo, hi) == cnt); } if (t == 1) { // sm int sm = 0; int k1 = RNG(R - L + 1); int k2 = RNG(R - L + 1); if (k1 > k2) swap(k1, k2); auto I = argsort(B); FOR(i, k1, k2) sm += Y[I[i]]; assert(WM.sum(L, R, k1, k2) == sm); } if (t == 2) { // kth if (L == R) continue; int k = RNG(R - L); sort(all(B)); assert(WM.kth(L, R, k) == B[k]); } if (t == 3) { // max_right int a = RNG(0, 10); int b = RNG(0, 10); int c = RNG(0, a * (R - L) + b * MAX * (R - L) + 1); auto check = [&](int cnt, int sm) -> bool { return a * cnt + b * sm <= c; }; auto p = WM.max_right(check, L, R); int k = binary_search( [&](int k) -> bool { int sm = WM.sum(L, R, 0, k); return check(k, sm); }, 0, R - L + 1); int sm = WM.sum(L, R, 0, k); assert(p.fi == k && p.se == sm); } if (t == 4) { // k-th value and sum int k = RNG(0, R - L + 1); B.eb(infty<int>); auto I = argsort(B); int val = B[I[k]]; int sm = 0; FOR(i, k) sm += Y[I[i]]; auto p = WM.kth_value_and_sum(L, R, k); assert(p.fi == val && p.se == sm); } } } void test_not_compress() { int N = RNG(0, 64); int log = RNG(1, 7); int MAX = 1 << log; vc<int> A(N); vc<int> X(N); FOR(i, N) X[i] = RNG(0, MAX); FOR(i, N) A[i] = RNG(MAX); Wavelet_Matrix<int, false> WM(A, X, log); int Q = 100; FOR(Q) { int L = RNG(0, max(1, N)); int R = RNG(0, max(1, N + 1)); if (L > R) swap(L, R); int lo = RNG(0, MAX); int hi = RNG(0, MAX); int xor_val = RNG(0, MAX); if (lo > hi) swap(lo, hi); ++hi; vc<int> B = {A.begin() + L, A.begin() + R}; vc<int> Y = {X.begin() + L, X.begin() + R}; for (auto&& x: B) x ^= xor_val; int t = RNG(0, 5); if (t == 0) { // count int cnt = 0; for (auto&& x: B) { if (lo <= x && x < hi) cnt += 1; } assert(WM.count(L, R, lo, hi, xor_val) == cnt); } if (t == 1) { // sm int sm = 0; int k1 = RNG(R - L + 1); int k2 = RNG(R - L + 1); if (k1 > k2) swap(k1, k2); auto I = argsort(B); FOR(i, k1, k2) sm += Y[I[i]]; assert(WM.sum(L, R, k1, k2, xor_val) == sm); } if (t == 2) { // kth if (L == R) continue; int k = RNG(R - L); sort(all(B)); assert(WM.kth(L, R, k, xor_val) == B[k]); } if (t == 3) { // max_right int a = RNG(0, 10); int b = RNG(0, 10); int c = RNG(0, a * (R - L) + b * MAX * (R - L) + 1); auto check = [&](int cnt, int sm) -> bool { return a * cnt + b * sm <= c; }; auto p = WM.max_right(check, L, R, xor_val); int k = binary_search( [&](int k) -> bool { int sm = WM.sum(L, R, 0, k, xor_val); return check(k, sm); }, 0, R - L + 1); int sm = WM.sum(L, R, 0, k, xor_val); assert(k == p.fi && sm == p.se); } if (t == 4) { // k-th value and sum int k = RNG(0, R - L + 1); B.eb(infty<int>); auto I = argsort(B); int val = B[I[k]]; int sm = 0; FOR(i, k) sm += Y[I[i]]; auto p = WM.kth_value_and_sum(L, R, k, xor_val); assert(p.fi == val && p.se == sm); } } } void solve() { int a, b; cin >> a >> b; cout << a + b << "\n"; } signed main() { FOR(1000) test_compress(); FOR(1000) test_not_compress(); solve(); return 0; }
#line 1 "test/mytest/wavelet_matrix.test.cpp" #define PROBLEM "https://judge.yosupo.jp/problem/aplusb" #line 1 "my_template.hpp" #if defined(LOCAL) #include <my_template_compiled.hpp> #else // https://codeforces.com/blog/entry/96344 #pragma GCC optimize("Ofast,unroll-loops") // いまの CF だとこれ入れると動かない? // #pragma GCC target("avx2,popcnt") #include <bits/stdc++.h> using namespace std; using ll = long long; using u32 = unsigned int; using u64 = unsigned long long; using i128 = __int128; using u128 = unsigned __int128; using f128 = __float128; template <class T> constexpr T infty = 0; template <> constexpr int infty<int> = 1'000'000'000; template <> constexpr ll infty<ll> = ll(infty<int>) * infty<int> * 2; template <> constexpr u32 infty<u32> = infty<int>; template <> constexpr u64 infty<u64> = infty<ll>; template <> constexpr i128 infty<i128> = i128(infty<ll>) * infty<ll>; template <> constexpr double infty<double> = infty<ll>; template <> constexpr long double infty<long double> = infty<ll>; using pi = pair<ll, ll>; using vi = vector<ll>; template <class T> using vc = vector<T>; template <class T> using vvc = vector<vc<T>>; template <class T> using vvvc = vector<vvc<T>>; template <class T> using vvvvc = vector<vvvc<T>>; template <class T> using vvvvvc = vector<vvvvc<T>>; template <class T> using pq = priority_queue<T>; template <class T> using pqg = priority_queue<T, vector<T>, greater<T>>; #define vv(type, name, h, ...) \ vector<vector<type>> name(h, vector<type>(__VA_ARGS__)) #define vvv(type, name, h, w, ...) \ vector<vector<vector<type>>> name( \ h, vector<vector<type>>(w, vector<type>(__VA_ARGS__))) #define vvvv(type, name, a, b, c, ...) \ vector<vector<vector<vector<type>>>> name( \ a, vector<vector<vector<type>>>( \ b, vector<vector<type>>(c, vector<type>(__VA_ARGS__)))) // https://trap.jp/post/1224/ #define FOR1(a) for (ll _ = 0; _ < ll(a); ++_) #define FOR2(i, a) for (ll i = 0; i < ll(a); ++i) #define FOR3(i, a, b) for (ll i = a; i < ll(b); ++i) #define FOR4(i, a, b, c) for (ll i = a; i < ll(b); i += (c)) #define FOR1_R(a) for (ll i = (a)-1; i >= ll(0); --i) #define FOR2_R(i, a) for (ll i = (a)-1; i >= ll(0); --i) #define FOR3_R(i, a, b) for (ll i = (b)-1; i >= ll(a); --i) #define overload4(a, b, c, d, e, ...) e #define overload3(a, b, c, d, ...) d #define FOR(...) overload4(__VA_ARGS__, FOR4, FOR3, FOR2, FOR1)(__VA_ARGS__) #define FOR_R(...) overload3(__VA_ARGS__, FOR3_R, FOR2_R, FOR1_R)(__VA_ARGS__) #define FOR_subset(t, s) \ for (ll t = (s); t >= 0; t = (t == 0 ? -1 : (t - 1) & (s))) #define all(x) x.begin(), x.end() #define len(x) ll(x.size()) #define elif else if #define eb emplace_back #define mp make_pair #define mt make_tuple #define fi first #define se second #define stoi stoll int popcnt(int x) { return __builtin_popcount(x); } int popcnt(u32 x) { return __builtin_popcount(x); } int popcnt(ll x) { return __builtin_popcountll(x); } int popcnt(u64 x) { return __builtin_popcountll(x); } int popcnt_mod_2(int x) { return __builtin_parity(x); } int popcnt_mod_2(u32 x) { return __builtin_parity(x); } int popcnt_mod_2(ll x) { return __builtin_parityll(x); } int popcnt_mod_2(u64 x) { return __builtin_parityll(x); } // (0, 1, 2, 3, 4) -> (-1, 0, 1, 1, 2) int topbit(int x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); } int topbit(u32 x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); } int topbit(ll x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); } int topbit(u64 x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); } // (0, 1, 2, 3, 4) -> (-1, 0, 1, 0, 2) int lowbit(int x) { return (x == 0 ? -1 : __builtin_ctz(x)); } int lowbit(u32 x) { return (x == 0 ? -1 : __builtin_ctz(x)); } int lowbit(ll x) { return (x == 0 ? -1 : __builtin_ctzll(x)); } int lowbit(u64 x) { return (x == 0 ? -1 : __builtin_ctzll(x)); } template <typename T> T floor(T a, T b) { return a / b - (a % b && (a ^ b) < 0); } template <typename T> T ceil(T x, T y) { return floor(x + y - 1, y); } template <typename T> T bmod(T x, T y) { return x - y * floor(x, y); } template <typename T> pair<T, T> divmod(T x, T y) { T q = floor(x, y); return {q, x - q * y}; } template <typename T, typename U> T SUM(const vector<U> &A) { T sm = 0; for (auto &&a: A) sm += a; return sm; } #define MIN(v) *min_element(all(v)) #define MAX(v) *max_element(all(v)) #define LB(c, x) distance((c).begin(), lower_bound(all(c), (x))) #define UB(c, x) distance((c).begin(), upper_bound(all(c), (x))) #define UNIQUE(x) \ sort(all(x)), x.erase(unique(all(x)), x.end()), x.shrink_to_fit() template <typename T> T POP(deque<T> &que) { T a = que.front(); que.pop_front(); return a; } template <typename T> T POP(pq<T> &que) { T a = que.top(); que.pop(); return a; } template <typename T> T POP(pqg<T> &que) { T a = que.top(); que.pop(); return a; } template <typename T> T POP(vc<T> &que) { T a = que.back(); que.pop_back(); return a; } template <typename F> ll binary_search(F check, ll ok, ll ng, bool check_ok = true) { if (check_ok) assert(check(ok)); while (abs(ok - ng) > 1) { auto x = (ng + ok) / 2; (check(x) ? ok : ng) = x; } return ok; } template <typename F> double binary_search_real(F check, double ok, double ng, int iter = 100) { FOR(iter) { double x = (ok + ng) / 2; (check(x) ? ok : ng) = x; } return (ok + ng) / 2; } template <class T, class S> inline bool chmax(T &a, const S &b) { return (a < b ? a = b, 1 : 0); } template <class T, class S> inline bool chmin(T &a, const S &b) { return (a > b ? a = b, 1 : 0); } // ? は -1 vc<int> s_to_vi(const string &S, char first_char) { vc<int> A(S.size()); FOR(i, S.size()) { A[i] = (S[i] != '?' ? S[i] - first_char : -1); } return A; } template <typename T, typename U> vector<T> cumsum(vector<U> &A, int off = 1) { int N = A.size(); vector<T> B(N + 1); FOR(i, N) { B[i + 1] = B[i] + A[i]; } if (off == 0) B.erase(B.begin()); return B; } // stable sort template <typename T> vector<int> argsort(const vector<T> &A) { vector<int> ids(len(A)); iota(all(ids), 0); sort(all(ids), [&](int i, int j) { return (A[i] == A[j] ? i < j : A[i] < A[j]); }); return ids; } // A[I[0]], A[I[1]], ... template <typename T> vc<T> rearrange(const vc<T> &A, const vc<int> &I) { vc<T> B(len(I)); FOR(i, len(I)) B[i] = A[I[i]]; return B; } #endif #line 1 "ds/bit_vector.hpp" struct Bit_Vector { vc<pair<u32, u32>> dat; Bit_Vector(int n) { dat.assign((n + 63) >> 5, {0, 0}); } void set(int i) { dat[i >> 5].fi |= u32(1) << (i & 31); } void build() { FOR(i, len(dat) - 1) dat[i + 1].se = dat[i].se + popcnt(dat[i].fi); } // [0, k) 内の 1 の個数 int rank(int k, bool f = 1) { auto [a, b] = dat[k >> 5]; int ret = b + popcnt(a & ((u32(1) << (k & 31)) - 1)); return (f ? ret : k - ret); } }; #line 2 "alg/monoid/add.hpp" template <typename E> struct Monoid_Add { using X = E; using value_type = X; static constexpr X op(const X &x, const X &y) noexcept { return x + y; } static constexpr X inverse(const X &x) noexcept { return -x; } static constexpr X power(const X &x, ll n) noexcept { return X(n) * x; } static constexpr X unit() { return X(0); } static constexpr bool commute = true; }; #line 3 "ds/wavelet_matrix/wavelet_matrix.hpp" // 座圧するかどうかを COMPRESS で指定する // xor 的な使い方をする場合には、コンストラクタで log を渡すこと template <typename T, bool COMPRESS, typename Monoid = Monoid_Add<T>> struct Wavelet_Matrix { using MX = Monoid; using X = typename MX::value_type; static_assert(MX::commute); int N, lg; vector<int> mid; vector<Bit_Vector> bv; vc<T> key; bool set_log; vvc<X> cumsum; Wavelet_Matrix() {} // 和を使わないなら、SUM_data は空でよい Wavelet_Matrix(vc<T> A, vc<X> SUM_data = {}, int log = -1) { build(A, SUM_data, log); } void build(vc<T> A, vc<X> SUM_data = {}, int log = -1) { N = len(A), lg = log, set_log = (log != -1); if (N == 0) { lg = 0; return; } bool MAKE_SUM = !(SUM_data.empty()); vc<X>& S = SUM_data; if (COMPRESS) { assert(!set_log); key.reserve(N); vc<int> I = argsort(A); for (auto&& i: I) { if (key.empty() || key.back() != A[i]) key.eb(A[i]); A[i] = len(key) - 1; } key.shrink_to_fit(); } if (lg == -1) lg = __lg(max<ll>(MAX(A), 1)) + 1; mid.resize(lg); bv.assign(lg, Bit_Vector(N)); if (MAKE_SUM) cumsum.assign(1 + lg, vc<X>(N + 1, MX::unit())); S.resize(N); vc<T> A0(N), A1(N); vc<X> S0(N), S1(N); FOR_R(d, -1, lg) { int p0 = 0, p1 = 0; if (MAKE_SUM) { FOR(i, N) { cumsum[d + 1][i + 1] = MX::op(cumsum[d + 1][i], S[i]); } } if (d == -1) break; FOR(i, N) { bool f = (A[i] >> d & 1); if (!f) { if (MAKE_SUM) S0[p0] = S[i]; A0[p0++] = A[i]; } if (f) { if (MAKE_SUM) S1[p1] = S[i]; bv[d].set(i), A1[p1++] = A[i]; } } mid[d] = p0; bv[d].build(); swap(A, A0), swap(S, S0); FOR(i, p1) A[p0 + i] = A1[i], S[p0 + i] = S1[i]; } } // xor した結果で [a, b) に収まるものを数える int count(int L, int R, T a, T b, T xor_val = 0) { return prefix_count(L, R, b, xor_val) - prefix_count(L, R, a, xor_val); } int count(vc<pair<int, int>> segments, T a, T b, T xor_val = 0) { int res = 0; for (auto&& [L, R]: segments) res += count(L, R, a, b, xor_val); return res; } // xor した結果で、[L, R) の中で k>=0 番目と prefix sum pair<T, X> kth_value_and_sum(int L, int R, int k, T xor_val = 0) { assert(0 <= k && k <= R - L); if (L == R) return {infty<T>, MX::unit()}; if (k == R - L) { return {infty<T>, sum_all(L, R)}; } if (xor_val != 0) assert(set_log); assert(!cumsum.empty()); int cnt = 0; X sm = MX::unit(); T ret = 0; for (int d = lg - 1; d >= 0; --d) { bool f = (xor_val >> d) & 1; int l0 = bv[d].rank(L, 0), r0 = bv[d].rank(R, 0); int c = (f ? (R - L) - (r0 - l0) : (r0 - l0)); if (cnt + c > k) { if (!f) L = l0, R = r0; if (f) L += mid[d] - l0, R += mid[d] - r0; } else { X s = (f ? get(d, L + mid[d] - l0, R + mid[d] - r0) : get(d, l0, r0)); cnt += c, ret |= T(1) << d, sm = MX::op(sm, s); if (!f) L += mid[d] - l0, R += mid[d] - r0; if (f) L = l0, R = r0; } } sm = MX::op(sm, get(0, L, L + k - cnt)); if (COMPRESS) ret = key[ret]; return {ret, sm}; } // xor した結果で、[L, R) の中で k>=0 番目と prefix sum pair<T, X> kth_value_and_sum(vc<pair<int, int>> segments, int k, T xor_val = 0) { assert(!cumsum.empty()); if (xor_val != 0) assert(set_log); int total_len = 0; for (auto&& [L, R]: segments) total_len += R - L; assert(0 <= k && k <= total_len); if (k == total_len) { return {infty<T>, sum_all(segments)}; } int cnt = 0; X sm = MX::unit(); T ret = 0; for (int d = lg - 1; d >= 0; --d) { bool f = (xor_val >> d) & 1; int c = 0; for (auto&& [L, R]: segments) { int l0 = bv[d].rank(L, 0), r0 = bv[d].rank(R, 0); c += (f ? (R - L) - (r0 - l0) : (r0 - l0)); } if (cnt + c > k) { for (auto&& [L, R]: segments) { int l0 = bv[d].rank(L, 0), r0 = bv[d].rank(R, 0); if (!f) L = l0, R = r0; if (f) L += mid[d] - l0, R += mid[d] - r0; } } else { cnt += c, ret |= T(1) << d; for (auto&& [L, R]: segments) { int l0 = bv[d].rank(L, 0), r0 = bv[d].rank(R, 0); X s = (f ? get(d, L + mid[d] - l0, R + mid[d] - r0) : get(d, l0, r0)); sm = MX::op(sm, s); if (!f) L += mid[d] - l0, R += mid[d] - r0; if (f) L = l0, R = r0; } } } for (auto&& [L, R]: segments) { int t = min(R - L, k - cnt); sm = MX::op(sm, get(0, L, L + t)); cnt += t; } if (COMPRESS) ret = key[ret]; return {ret, sm}; } // xor した結果で、[L, R) の中で k>=0 番目 T kth(int L, int R, int k, T xor_val = 0) { if (xor_val != 0) assert(set_log); assert(0 <= k && k < R - L); int cnt = 0; T ret = 0; for (int d = lg - 1; d >= 0; --d) { bool f = (xor_val >> d) & 1; int l0 = bv[d].rank(L, 0), r0 = bv[d].rank(R, 0); int c = (f ? (R - L) - (r0 - l0) : (r0 - l0)); if (cnt + c > k) { if (!f) L = l0, R = r0; if (f) L += mid[d] - l0, R += mid[d] - r0; } else { cnt += c, ret |= T(1) << d; if (!f) L += mid[d] - l0, R += mid[d] - r0; if (f) L = l0, R = r0; } } if (COMPRESS) ret = key[ret]; return ret; } T kth(vc<pair<int, int>> segments, int k, T xor_val = 0) { int total_len = 0; for (auto&& [L, R]: segments) total_len += R - L; assert(0 <= k && k < total_len); int cnt = 0; T ret = 0; for (int d = lg - 1; d >= 0; --d) { bool f = (xor_val >> d) & 1; int c = 0; for (auto&& [L, R]: segments) { int l0 = bv[d].rank(L, 0), r0 = bv[d].rank(R, 0); c += (f ? (R - L) - (r0 - l0) : (r0 - l0)); } if (cnt + c > k) { for (auto&& [L, R]: segments) { int l0 = bv[d].rank(L, 0), r0 = bv[d].rank(R, 0); if (!f) L = l0, R = r0; if (f) L += mid[d] - l0, R += mid[d] - r0; } } else { cnt += c, ret |= T(1) << d; for (auto&& [L, R]: segments) { int l0 = bv[d].rank(L, 0), r0 = bv[d].rank(R, 0); if (!f) L += mid[d] - l0, R += mid[d] - r0; if (f) L = l0, R = r0; } } } if (COMPRESS) ret = key[ret]; return ret; } // xor した結果で、[L, R) の中で中央値。 // LOWER = true:下側中央値、false:上側中央値 T median(bool UPPER, int L, int R, T xor_val = 0) { int n = R - L; int k = (UPPER ? n / 2 : (n - 1) / 2); return kth(L, R, k, xor_val); } T median(bool UPPER, vc<pair<int, int>> segments, T xor_val = 0) { int n = 0; for (auto&& [L, R]: segments) n += R - L; int k = (UPPER ? n / 2 : (n - 1) / 2); return kth(segments, k, xor_val); } // xor した結果で [k1, k2) 番目であるところの SUM_data の和 X sum(int L, int R, int k1, int k2, T xor_val = 0) { assert(0 <= k1 && k1 <= k2 && k2 <= R - L); if (k1 == k2) return MX::unit(); X add = prefix_sum(L, R, k2, xor_val); X sub = prefix_sum(L, R, k1, xor_val); return MX::op(add, MX::inverse(sub)); } X sum_all(int L, int R) { return get(lg, L, R); } X sum_all(vc<pair<int, int>> segments) { X sm = MX::unit(); for (auto&& [L, R]: segments) { sm = MX::op(sm, get(lg, L, R)); } return sm; } // check(cnt, prefix sum) が true となるような最大の (cnt, sum) template <typename F> pair<int, X> max_right(F check, int L, int R, T xor_val = 0) { assert(check(0, MX::unit())); if (xor_val != 0) assert(set_log); if (L == R) return {R - L, MX::unit()}; if (check(R - L, get(lg, L, R))) return {R - L, get(lg, L, R)}; int cnt = 0; X sm = MX::unit(); for (int d = lg - 1; d >= 0; --d) { bool f = (xor_val >> d) & 1; int l0 = bv[d].rank(L, 0), r0 = bv[d].rank(R, 0); int c = (f ? (R - L) - (r0 - l0) : (r0 - l0)); X s = (f ? get(d, L + mid[d] - l0, R + mid[d] - r0) : get(d, l0, r0)); if (check(cnt + c, MX::op(sm, s))) { cnt += c, sm = MX::op(sm, s); if (f) L = l0, R = r0; if (!f) L += mid[d] - l0, R += mid[d] - r0; } else { if (!f) L = l0, R = r0; if (f) L += mid[d] - l0, R += mid[d] - r0; } } int k = binary_search( [&](int k) -> bool { return check(cnt + k, MX::op(sm, get(0, L, L + k))); }, 0, R - L); cnt += k; sm = MX::op(sm, get(0, L, L + k)); return {cnt, sm}; } private: inline X get(int d, int L, int R) { assert(!cumsum.empty()); return MX::op(MX::inverse(cumsum[d][L]), cumsum[d][R]); } // xor した結果で [0, x) に収まるものを数える int prefix_count(int L, int R, T x, T xor_val = 0) { if (xor_val != 0) assert(set_log); x = (COMPRESS ? LB(key, x) : x); if (x == 0) return 0; if (x >= (1 << lg)) return R - L; int cnt = 0; FOR_R(d, lg) { bool add = (x >> d) & 1; bool f = ((xor_val) >> d) & 1; int l0 = bv[d].rank(L, 0), r0 = bv[d].rank(R, 0); int kf = (f ? (R - L) - (r0 - l0) : (r0 - l0)); if (add) { cnt += kf; if (f) { L = l0, R = r0; } if (!f) { L += mid[d] - l0, R += mid[d] - r0; } } else { if (!f) L = l0, R = r0; if (f) L += mid[d] - l0, R += mid[d] - r0; } } return cnt; } // xor した結果で [0, k) 番目のものの和 X prefix_sum(int L, int R, int k, T xor_val = 0) { return kth_value_and_sum(L, R, k, xor_val).se; } // xor した結果で [0, k) 番目のものの和 X prefix_sum(vc<pair<int, int>> segments, int k, T xor_val = 0) { return kth_value_and_sum(segments, k, xor_val).se; } }; #line 2 "random/base.hpp" u64 RNG_64() { static uint64_t x_ = uint64_t(chrono::duration_cast<chrono::nanoseconds>( chrono::high_resolution_clock::now().time_since_epoch()) .count()) * 10150724397891781847ULL; x_ ^= x_ << 7; return x_ ^= x_ >> 9; } u64 RNG(u64 lim) { return RNG_64() % lim; } ll RNG(ll l, ll r) { return l + RNG_64() % (r - l); } #line 5 "test/mytest/wavelet_matrix.test.cpp" void test_compress() { int N = RNG(0, 64); int MAX = RNG(2, 1 << 10); vc<int> A(N); vc<int> X(N); FOR(i, N) X[i] = RNG(MAX); FOR(i, N) A[i] = RNG(MAX); Wavelet_Matrix<int, true> WM(A, X); int Q = 100; FOR(Q) { int L = RNG(0, max(1, N)); int R = RNG(0, max(1, N + 1)); if (L > R) swap(L, R); int lo = RNG(0, MAX); int hi = RNG(0, MAX); if (lo > hi) swap(lo, hi); ++hi; vc<int> B = {A.begin() + L, A.begin() + R}; vc<int> Y = {X.begin() + L, X.begin() + R}; int t = RNG(0, 5); if (t == 0) { // count int cnt = 0; for (auto&& x: B) if (lo <= x && x < hi) cnt += 1; assert(WM.count(L, R, lo, hi) == cnt); } if (t == 1) { // sm int sm = 0; int k1 = RNG(R - L + 1); int k2 = RNG(R - L + 1); if (k1 > k2) swap(k1, k2); auto I = argsort(B); FOR(i, k1, k2) sm += Y[I[i]]; assert(WM.sum(L, R, k1, k2) == sm); } if (t == 2) { // kth if (L == R) continue; int k = RNG(R - L); sort(all(B)); assert(WM.kth(L, R, k) == B[k]); } if (t == 3) { // max_right int a = RNG(0, 10); int b = RNG(0, 10); int c = RNG(0, a * (R - L) + b * MAX * (R - L) + 1); auto check = [&](int cnt, int sm) -> bool { return a * cnt + b * sm <= c; }; auto p = WM.max_right(check, L, R); int k = binary_search( [&](int k) -> bool { int sm = WM.sum(L, R, 0, k); return check(k, sm); }, 0, R - L + 1); int sm = WM.sum(L, R, 0, k); assert(p.fi == k && p.se == sm); } if (t == 4) { // k-th value and sum int k = RNG(0, R - L + 1); B.eb(infty<int>); auto I = argsort(B); int val = B[I[k]]; int sm = 0; FOR(i, k) sm += Y[I[i]]; auto p = WM.kth_value_and_sum(L, R, k); assert(p.fi == val && p.se == sm); } } } void test_not_compress() { int N = RNG(0, 64); int log = RNG(1, 7); int MAX = 1 << log; vc<int> A(N); vc<int> X(N); FOR(i, N) X[i] = RNG(0, MAX); FOR(i, N) A[i] = RNG(MAX); Wavelet_Matrix<int, false> WM(A, X, log); int Q = 100; FOR(Q) { int L = RNG(0, max(1, N)); int R = RNG(0, max(1, N + 1)); if (L > R) swap(L, R); int lo = RNG(0, MAX); int hi = RNG(0, MAX); int xor_val = RNG(0, MAX); if (lo > hi) swap(lo, hi); ++hi; vc<int> B = {A.begin() + L, A.begin() + R}; vc<int> Y = {X.begin() + L, X.begin() + R}; for (auto&& x: B) x ^= xor_val; int t = RNG(0, 5); if (t == 0) { // count int cnt = 0; for (auto&& x: B) { if (lo <= x && x < hi) cnt += 1; } assert(WM.count(L, R, lo, hi, xor_val) == cnt); } if (t == 1) { // sm int sm = 0; int k1 = RNG(R - L + 1); int k2 = RNG(R - L + 1); if (k1 > k2) swap(k1, k2); auto I = argsort(B); FOR(i, k1, k2) sm += Y[I[i]]; assert(WM.sum(L, R, k1, k2, xor_val) == sm); } if (t == 2) { // kth if (L == R) continue; int k = RNG(R - L); sort(all(B)); assert(WM.kth(L, R, k, xor_val) == B[k]); } if (t == 3) { // max_right int a = RNG(0, 10); int b = RNG(0, 10); int c = RNG(0, a * (R - L) + b * MAX * (R - L) + 1); auto check = [&](int cnt, int sm) -> bool { return a * cnt + b * sm <= c; }; auto p = WM.max_right(check, L, R, xor_val); int k = binary_search( [&](int k) -> bool { int sm = WM.sum(L, R, 0, k, xor_val); return check(k, sm); }, 0, R - L + 1); int sm = WM.sum(L, R, 0, k, xor_val); assert(k == p.fi && sm == p.se); } if (t == 4) { // k-th value and sum int k = RNG(0, R - L + 1); B.eb(infty<int>); auto I = argsort(B); int val = B[I[k]]; int sm = 0; FOR(i, k) sm += Y[I[i]]; auto p = WM.kth_value_and_sum(L, R, k, xor_val); assert(p.fi == val && p.se == sm); } } } void solve() { int a, b; cin >> a >> b; cout << a + b << "\n"; } signed main() { FOR(1000) test_compress(); FOR(1000) test_not_compress(); solve(); return 0; }