#line 1 "main.cpp" #define PROBLEM "https://yukicoder.me/problems/no/1332" #line 1 "library/my_template.hpp" #if defined(LOCAL) #include #else #pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") #include using namespace std; using ll = long long; using u32 = unsigned int; using u64 = unsigned long long; using i128 = __int128; template constexpr T infty = 0; template <> constexpr int infty = 1'000'000'000; template <> constexpr ll infty = ll(infty) * infty * 2; template <> constexpr u32 infty = infty; template <> constexpr u64 infty = infty; template <> constexpr i128 infty = i128(infty) * infty; template <> constexpr double infty = infty; template <> constexpr long double infty = infty; using pi = pair; using vi = vector; template using vc = vector; template using vvc = vector>; template using vvvc = vector>; template using vvvvc = vector>; template using vvvvvc = vector>; template using pq = priority_queue; template using pqg = priority_queue, greater>; #define vv(type, name, h, ...) \ vector> name(h, vector(__VA_ARGS__)) #define vvv(type, name, h, w, ...) \ vector>> name( \ h, vector>(w, vector(__VA_ARGS__))) #define vvvv(type, name, a, b, c, ...) \ vector>>> name( \ a, vector>>( \ b, vector>(c, vector(__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); } // (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 T ceil(T x, U y) { return (x > 0 ? (x + y - 1) / y : x / y); } template T floor(T x, U y) { return (x > 0 ? x / y : (x - y + 1) / y); } template pair divmod(T x, U y) { T q = floor(x, y); return {q, x - q * y}; } template T SUM(const vector &A) { T sum = 0; for (auto &&a: A) sum += a; return sum; } #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 T POP(deque &que) { T a = que.front(); que.pop_front(); return a; } template T POP(pq &que) { T a = que.top(); que.pop(); return a; } template T POP(pqg &que) { assert(!que.empty()); T a = que.top(); que.pop(); return a; } template T POP(vc &que) { assert(!que.empty()); T a = que.back(); que.pop_back(); return a; } template 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; tie(ok, ng) = (check(x) ? mp(x, ng) : mp(ok, x)); } return ok; } template double binary_search_real(F check, double ok, double ng, int iter = 100) { FOR(iter) { double x = (ok + ng) / 2; tie(ok, ng) = (check(x) ? mp(x, ng) : mp(ok, x)); } return (ok + ng) / 2; } template inline bool chmax(T &a, const S &b) { return (a < b ? a = b, 1 : 0); } template inline bool chmin(T &a, const S &b) { return (a > b ? a = b, 1 : 0); } // ? は -1 vc s_to_vi(const string &S, char first_char) { vc A(S.size()); FOR(i, S.size()) { A[i] = (S[i] != '?' ? S[i] - first_char : -1); } return A; } template vector cumsum(vector &A, int off = 1) { int N = A.size(); vector 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 vector argsort(const vector &A) { vector 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 vc rearrange(const vc &A, const vc &I) { vc B(len(I)); FOR(i, len(I)) B[i] = A[I[i]]; return B; } #endif #line 1 "library/other/io.hpp" // based on yosupo's fastio #include namespace fastio { #define FASTIO // クラスが read(), print() を持っているかを判定するメタ関数 struct has_write_impl { template static auto check(T &&x) -> decltype(x.write(), std::true_type{}); template static auto check(...) -> std::false_type; }; template class has_write : public decltype(has_write_impl::check(std::declval())) { }; struct has_read_impl { template static auto check(T &&x) -> decltype(x.read(), std::true_type{}); template static auto check(...) -> std::false_type; }; template class has_read : public decltype(has_read_impl::check(std::declval())) {}; struct Scanner { FILE *fp; char line[(1 << 15) + 1]; size_t st = 0, ed = 0; void reread() { memmove(line, line + st, ed - st); ed -= st; st = 0; ed += fread(line + ed, 1, (1 << 15) - ed, fp); line[ed] = '\0'; } bool succ() { while (true) { if (st == ed) { reread(); if (st == ed) return false; } while (st != ed && isspace(line[st])) st++; if (st != ed) break; } if (ed - st <= 50) { bool sep = false; for (size_t i = st; i < ed; i++) { if (isspace(line[i])) { sep = true; break; } } if (!sep) reread(); } return true; } template ::value, int> = 0> bool read_single(T &ref) { if (!succ()) return false; while (true) { size_t sz = 0; while (st + sz < ed && !isspace(line[st + sz])) sz++; ref.append(line + st, sz); st += sz; if (!sz || st != ed) break; reread(); } return true; } template ::value, int> = 0> bool read_single(T &ref) { if (!succ()) return false; bool neg = false; if (line[st] == '-') { neg = true; st++; } ref = T(0); while (isdigit(line[st])) { ref = 10 * ref + (line[st++] & 0xf); } if (neg) ref = -ref; return true; } template ::value>::type * = nullptr> inline bool read_single(T &x) { x.read(); return true; } bool read_single(double &ref) { string s; if (!read_single(s)) return false; ref = std::stod(s); return true; } bool read_single(char &ref) { string s; if (!read_single(s) || s.size() != 1) return false; ref = s[0]; return true; } template bool read_single(vector &ref) { for (auto &d: ref) { if (!read_single(d)) return false; } return true; } template bool read_single(pair &p) { return (read_single(p.first) && read_single(p.second)); } template void read_single_tuple(T &t) { if constexpr (N < std::tuple_size::value) { auto &x = std::get(t); read_single(x); read_single_tuple(t); } } template bool read_single(tuple &tpl) { read_single_tuple(tpl); return true; } void read() {} template void read(H &h, T &... t) { bool f = read_single(h); assert(f); read(t...); } Scanner(FILE *fp) : fp(fp) {} }; struct Printer { Printer(FILE *_fp) : fp(_fp) {} ~Printer() { flush(); } static constexpr size_t SIZE = 1 << 15; FILE *fp; char line[SIZE], small[50]; size_t pos = 0; void flush() { fwrite(line, 1, pos, fp); pos = 0; } void write(const char val) { if (pos == SIZE) flush(); line[pos++] = val; } template ::value, int> = 0> void write(T val) { if (pos > (1 << 15) - 50) flush(); if (val == 0) { write('0'); return; } if (val < 0) { write('-'); val = -val; // todo min } size_t len = 0; while (val) { small[len++] = char(0x30 | (val % 10)); val /= 10; } for (size_t i = 0; i < len; i++) { line[pos + i] = small[len - 1 - i]; } pos += len; } void write(const string s) { for (char c: s) write(c); } void write(const char *s) { size_t len = strlen(s); for (size_t i = 0; i < len; i++) write(s[i]); } void write(const double x) { ostringstream oss; oss << fixed << setprecision(15) << x; string s = oss.str(); write(s); } void write(const long double x) { ostringstream oss; oss << fixed << setprecision(15) << x; string s = oss.str(); write(s); } template ::value>::type * = nullptr> inline void write(T x) { x.write(); } template void write(const vector val) { auto n = val.size(); for (size_t i = 0; i < n; i++) { if (i) write(' '); write(val[i]); } } template void write(const pair val) { write(val.first); write(' '); write(val.second); } template void write_tuple(const T t) { if constexpr (N < std::tuple_size::value) { if constexpr (N > 0) { write(' '); } const auto x = std::get(t); write(x); write_tuple(t); } } template bool write(tuple tpl) { write_tuple(tpl); return true; } template void write(const array val) { auto n = val.size(); for (size_t i = 0; i < n; i++) { if (i) write(' '); write(val[i]); } } void write(i128 val) { string s; bool negative = 0; if (val < 0) { negative = 1; val = -val; } while (val) { s += '0' + int(val % 10); val /= 10; } if (negative) s += "-"; reverse(all(s)); if (len(s) == 0) s = "0"; write(s); } }; Scanner scanner = Scanner(stdin); Printer printer = Printer(stdout); void flush() { printer.flush(); } void print() { printer.write('\n'); } template void print(Head &&head, Tail &&... tail) { printer.write(head); if (sizeof...(Tail)) printer.write(' '); print(forward(tail)...); } void read() {} template void read(Head &head, Tail &... tail) { scanner.read(head); read(tail...); } } // namespace fastio using fastio::print; using fastio::flush; using fastio::read; #define INT(...) \ int __VA_ARGS__; \ read(__VA_ARGS__) #define LL(...) \ ll __VA_ARGS__; \ read(__VA_ARGS__) #define STR(...) \ string __VA_ARGS__; \ read(__VA_ARGS__) #define CHAR(...) \ char __VA_ARGS__; \ read(__VA_ARGS__) #define DBL(...) \ double __VA_ARGS__; \ read(__VA_ARGS__) #define VEC(type, name, size) \ vector name(size); \ read(name) #define VV(type, name, h, w) \ vector> name(h, vector(w)); \ read(name) void YES(bool t = 1) { print(t ? "YES" : "NO"); } void NO(bool t = 1) { YES(!t); } void Yes(bool t = 1) { print(t ? "Yes" : "No"); } void No(bool t = 1) { Yes(!t); } void yes(bool t = 1) { print(t ? "yes" : "no"); } void no(bool t = 1) { yes(!t); } #line 1 "library/ds/bit_vector.hpp" struct Bit_Vector { vc> 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 "library/alg/monoid/add.hpp" template struct Monoid_Add { 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 "library/ds/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 > struct Wavelet_Matrix { using MX = Monoid; using X = typename MX::value_type; static_assert(MX::commute); int N, lg; vector mid; vector bv; vc key; const bool set_log; vvc cumsum; // 和を使わないなら、SUM_data は空でよい Wavelet_Matrix(vc A, vc SUM_data = {}, int log = -1) : N(len(A)), lg(log), set_log(log != -1) { bool MAKE_SUM = !(SUM_data.empty()); vc& S = SUM_data; if (COMPRESS) { assert(!set_log); key.reserve(N); vc 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(MAX(A), 1)) + 1; mid.resize(lg); bv.assign(lg, Bit_Vector(N)); if (MAKE_SUM) cumsum.assign(1 + lg, vc(N + 1, MX::unit())); vc A0(N), A1(N); vc 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); } // 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); 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 kf = (f ? (R - L) - (r0 - l0) : (r0 - l0)); if (k < kf) { if (!f) L = l0, R = r0; if (f) L += mid[d] - l0, R += mid[d] - r0; } else { k -= kf, 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; } // xor した結果で、[L, R) の中で k>=0 番目と prefix sum pair kth_value_and_sum(int L, int R, int k, T xor_val = 0) { if (xor_val != 0) assert(set_log); assert(0 <= k && k <= R - L); if (k == R - L) { return {infty, sum_all(L, R)}; } T ret = 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 kf = (f ? (R - L) - (r0 - l0) : (r0 - l0)); if (k < kf) { 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)); k -= kf, 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; } } if (k) sm = MX::op(sm, get(0, L, L + k)); if (COMPRESS) ret = key[ret]; return {ret, sm}; } // 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); } // 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) { return prefix_sum(L, R, k2, xor_val) - prefix_sum(L, R, k1, xor_val); } X sum_all(int L, int R) { return MX::op(MX::inverse(cumsum[lg][L]), cumsum[lg][R]); } // check(cnt, prefix sum) が true となるような最大個数 template int 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 (check(R - L, get(lg, L, R))) return R - L; 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; } } cnt += binary_search( [&](int k) -> bool { return check(cnt + k, MX::op(sm, get(0, L, L + k))); }, 0, R - L); return cnt; } private: inline X get(int d, int L, int R) { 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) { if (xor_val != 0) assert(set_log); assert(0 <= k && k <= R - L); if (k == 0) return MX::unit(); if (k == R - L) return sum_all(L, R); assert(!cumsum.empty()); 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 (k < c) { if (!f) L = l0, R = r0; if (f) L += mid[d] - l0, R += mid[d] - r0; } else { k -= c, sm = MX::op(sm, s); if (f) { L = l0, R = r0; } if (!f) { L += mid[d] - l0, R += mid[d] - r0; } } } if (k) sm = MX::op(sm, get(0, L, L + k)); return sm; } }; #line 5 "main.cpp" void solve() { LL(N); VEC(ll, X, N); Wavelet_Matrix WM(X); LL(Q); FOR(Q) { LL(l, r, x); --l; ll ANS = infty; ll n = WM.count(l, r, 0, x); if (n > 0) chmin(ANS, abs(x - WM.kth(l, r, n - 1))); if (n < r - l) chmin(ANS, abs(x - WM.kth(l, r, n))); print(ANS); } } signed main() { solve(); return 0; }