結果
| 問題 | No.3467 Bracket Warp |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2026-02-28 16:28:23 |
| 言語 | C++23 (gcc 15.2.0 + boost 1.89.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 22,155 bytes |
| 記録 | |
| コンパイル時間 | 4,950 ms |
| コンパイル使用メモリ | 365,704 KB |
| 実行使用メモリ | 18,880 KB |
| 最終ジャッジ日時 | 2026-02-28 16:28:47 |
| 合計ジャッジ時間 | 10,778 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge7 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 18 WA * 7 |
ソースコード
#line 2 "/Users/korogi/Desktop/cp-cpp/template.hpp"
#include <bits/stdc++.h>
using namespace std;
using i32 = int;
using i64 = long long;
using i128 = __int128;
using u32 = unsigned int;
using u64 = unsigned long long;
using u128 = unsigned __int128;
using f32 = double;
using f64 = long double;
#define DMP(x) cout << "[" << __LINE__ << "]" << " " << #x << ":" << " " << x << endl;
#define FOR1(n) for(int _ = 0 , n_ = (n); _ < n_; _++)
#define FOR2(i, n) for(int i = 0 , n_ = (n); i < n_; i++)
#define FOR3(i, s, t) for(int i = (s), t_ = (t); i < t_; i++)
#define FOR4(i, s, t, d) for(int i = (s), t_ = (t), d_ = (d); i < t_; i += d_)
#define OVERLOAD4(a, b, c, d, e, ...) e
#define FOR(...) OVERLOAD4(__VA_ARGS__, FOR4, FOR3, FOR2, FOR1)(__VA_ARGS__)
#define REV1(n) for(int _ = (n) - 1; _ >= 0 ; _--)
#define REV2(i, n) for(int i = (n) - 1; i >= 0 ; i--)
#define REV3(i, s, t) for(int i = (t) - 1, s_ = (s); i >= s_; i--)
#define REV4(i, s, t, d) for(int i = (t) - 1, s_ = (s), d_ = (d); i >= s_; i -= d_)
#define OVERLOAD3(a, b, c, d, ...) d
#define REV(...) OVERLOAD4(__VA_ARGS__, REV4, REV3, REV2, REV1)(__VA_ARGS__)
#define FOR_SUBSET(T, S) for(int S_ = (S), T = S_; T >= 0; T = (T == 0 ? -1 : (T - 1) & S_))
#define MULTI for(int testcase_ = in(), testcase = 0; testcase < testcase_; testcase++) [&]
template < class T > using heap_max = priority_queue< T, vector< T >, less< T > >;
template < class T > using heap_min = priority_queue< T, vector< T >, greater< T >>;
template < class T, class U > bool chmin(T& a, const U& b) { return a > b ? a = b, 1 : 0; }
template < class T, class U > bool chmax(T& a, const U& b) { return a < b ? a = b, 1 : 0; }
i64 floor_div(const i64 n, const i64 d) { assert(d != 0); return n / d - ((n ^ d) < 0 && n % d != 0); }
i64 ceil_div(const i64 n, const i64 d) { assert(d != 0); return n / d + ((n ^ d) >= 0 && n % d != 0); }
template < class T, class F > T bin_search(T ok, T ng, const F& check) { while((ok > ng ? ok - ng : ng - ok) > 1) { T mid = (ok + ng) / 2; (check(mid) ? ok : ng) = mid; } return ok; }
template < class T, class F > T bin_search_real(T ok, T ng, const F& check, int step = 100) { FOR(step) { T mid = (ok + ng) / 2; (check(mid) ? ok : ng) = mid; } return ok; }
template < class T, class U > T accum(const vector< U >& a) { return accumulate(a.begin(), a.end(), T(0)); }
template < class T > void sort(vector< T >& a) { sort(a.begin(), a.end()); }
template < class T > void rsort(vector< T >& a) { sort(a.rbegin(), a.rend()); }
template < class T > void reverse(vector< T >& a) { reverse(a.begin(), a.end()); }
void sort(string& s) { sort(s.begin(), s.end()); }
void rsort(string& s) { sort(s.rbegin(), s.rend()); }
void reverse(string& s) { reverse(s.begin(), s.end()); }
template < class T, class Cmp > void sort(vector< T >& a, Cmp cmp) { sort(a.begin(), a.end(), cmp); }
template < class T > int LB(const vector< T >& a, T x) { return distance(a.begin(), lower_bound(a.begin(), a.end(), x)); }
template < class T > int UB(const vector< T >& a, T x) { return distance(a.begin(), upper_bound(a.begin(), a.end(), x)); }
template < class T > void unique(vector< T >& a) { sort(a.begin(), a.end()); a.erase(unique(a.begin(), a.end()), a.end()); }
vector<int> iota(int n) { vector<int> a(n); iota(a.begin(), a.end(), 0); return a; }
istream& operator >> (istream& is, i128& x) {
string s; is >> s;
int m = (s[0] == '-');
x = 0;
FOR(i, m, ssize(s)) x = x * 10 + (s[i] - '0');
if(m) x *= -1;
return is;
}
ostream& operator << (ostream& os, const i128& x) {
if(x == 0) return os << '0';
i128 y = x; if(y < 0) { os << '-'; y *= -1; }
vector<int> ny;
while(y) ny.push_back(y % 10), y /= 10;
REV(i, ssize(ny)) os << ny[i];
return os;
}
namespace scan {
struct x0 { template < class T > operator T() { T x; cin >> x; return x; } };
struct x1 { int n; x1(int n) : n(n) {} template < class T > operator vector< T >() { vector< T > a(n); for(T& x : a) cin >> x; return a; } };
struct x2 { int h, w; x2(int h, int w) : h(h), w(w) {} template < class T > operator vector< vector< T > >() { vector m(h, vector< T >(w)); for(vector< T >& a : m) for(T& x : a) cin >> x; return m; } };
struct cppio { cppio() { cin.tie(0); ios::sync_with_stdio(0); } } cppio_instance;
}
scan::x0 in() { return scan::x0(); }
scan::x1 in(int n) { return scan::x1(n); }
scan::x2 in(int h, int w) { return scan::x2(h, w); }
template < class T > ostream& operator << (ostream& os, const vector< T >& a) {
const int n = a.size();
FOR(i, n) { os << a[i]; if(i + 1 != n) os << ' '; }
return os;
}
template < class T > int print_n(const vector< T >& a) { for(const T& x : a) cout << x << '\n'; return 0; }
int print() { cout << '\n'; return 0; }
template < class Head, class... Tail > int print(Head&& h, Tail&&... t) { cout << h; if(sizeof...(Tail)) cout << ' '; return print(forward<Tail>(t)...); }
namespace printer {
void prec(int n) { cout << fixed << setprecision(n); }
void flush() { cout.flush(); }
}
vector<int>& operator ++ (vector<int>& a) { for(auto& e : a) e++; return a; }
vector<int>& operator -- (vector<int>& a) { for(auto& e : a) e--; return a; }
vector<int> operator ++ (vector<int>& a, int) { vector<int> b = a; ++a; return b; }
vector<int> operator -- (vector<int>& a, int) { vector<int> b = a; --a; return b; }
template < class T > vector<pair< T, int>> RLE(const vector< T >& a) { vector<pair< T, int>> v; for(const T& x : a) { if(not v.empty() and v.back().first == x) v.back().second++; else v.emplace_back(x, 1); } return v; }
vector<pair<char, int>> RLE(const string& s) { vector<pair<char, int>> v; for(const char& c : s) { if(not v.empty() and v.back().first == c) v.back().second++; else v.emplace_back(c, 1); } return v; }
template < class String, class Same > vector<String> RLE(const String& a, const Same same) { vector<String> v; for(const auto& x : a) { if(not v.empty() and same(v.back().back(), x)) v.back().push_back(x); else v.push_back({x}); } return v; }
int YESNO(bool yes) { return print(yes ? "YES" : "NO"); }
int YesNo(bool yes) { return print(yes ? "Yes" : "No"); }
int Yes() { return print("Yes"); }
int No() { return print("No"); }
constexpr i32 INF32 = 1e9;
constexpr i64 INF64 = 1e18;
template < class T > constexpr T infty = 0;
template <> constexpr int infty<int> = 1e9;
template <> constexpr int infty<u32> = 1e9;
template <> constexpr i64 infty<i64> = 1e18;
template <> constexpr u64 infty<u64> = 1e18;
namespace bit {
int pop(int x) { return popcount<u32>(x); }
int pop(u32 x) { return popcount<u32>(x); }
int pop(i64 x) { return popcount<u64>(x); }
int pop(u64 x) { return popcount<u64>(x); }
int parity(int x) { return __builtin_parity(x); }
int parity(u32 x) { return __builtin_parity(x); }
int parity(i64 x) { return __builtin_parityll(x); }
int parity(u64 x) { return __builtin_parityll(x); }
int sgn(int x) { return parity(x) ? -1 : +1; }
int sgn(u32 x) { return parity(x) ? -1 : +1; }
int sgn(i64 x) { return parity(x) ? -1 : +1; }
int sgn(u64 x) { return parity(x) ? -1 : +1; }
int top(int x) { return x == 0 ? -1 : 31 - __builtin_clz(x); }
int top(u32 x) { return x == 0 ? -1 : 31 - __builtin_clz(x); }
int top(i64 x) { return x == 0 ? -1 : 63 - __builtin_clzll(x); }
int top(u64 x) { return x == 0 ? -1 : 63 - __builtin_clzll(x); }
int low(int x) { return x == 0 ? -1 : __builtin_ctz(x); }
int low(u32 x) { return x == 0 ? -1 : __builtin_ctz(x); }
int low(i64 x) { return x == 0 ? -1 : __builtin_ctzll(x); }
int low(u64 x) { return x == 0 ? -1 : __builtin_ctzll(x); }
int ceil(int x) { return bit_ceil<u32>(x); }
i64 ceil(i64 x) { return bit_ceil<u64>(x); }
int floor(int x) { return bit_floor<u32>(x); }
i64 floor(i64 x) { return bit_floor<u64>(x); }
}
// (-1)^n
int parity_sign(int n) { return n % 2 == 0 ? +1 : -1; }
// template < class T > pair< T, int > min(const vector< T >& a) { auto itr = min_element(a.begin(), a.end()); return {*itr, itr - a.begin()}; }
// template < class T > pair< T, int > max(const vector< T >& a) { auto itr = max_element(a.begin(), a.end()); return {*itr, itr - a.begin()}; }
template < class Key, class Value >
struct key_value {
Key key;
Value value;
};
template < class Value > key_value<int, Value> min(const vector<Value>& a) {
assert(1 <= ssize(a));
auto itr = min_element(a.begin(), a.end());
return {static_cast<int>(distance(a.begin(), itr)), *itr};
}
template < class Value > key_value<int, Value> max(const vector<Value>& a) {
assert(1 <= ssize(a));
auto itr = max_element(a.begin(), a.end());
return {static_cast<int>(distance(a.begin(), itr)), *itr};
}
struct grid {
int H, W;
grid(int H, int W) : H(H), W(W) {}
static constexpr pair<int, int> dir4[] = {
{-1, 0},
{ 0, -1}, { 0, +1},
{+1, 0}
};
static constexpr pair<int, int> dir8[] = {
{-1, -1}, {-1, 0}, {-1, +1},
{ 0, -1}, { 0, +1},
{+1, -1}, {+1, 0}, {+1, +1}
};
bool contains(int i, int j) const {
return 0 <= i and i < H and 0 <= j and j < W;
}
template < class F >
void for_each_dir4(int i, int j, const F& f) const {
for(const auto [di, dj] : dir4) {
const int ni = i + di, nj = j + dj;
if(contains(ni, nj)) f(ni, nj);
}
}
template < class F >
void for_each_dir8(int i, int j, const F& f) const {
for(const auto [di, dj] : dir8) {
const int ni = i + di, nj = j + dj;
if(contains(ni, nj)) f(ni, nj);
}
}
};
template < class Sum > struct psum1D {
int n;
vector<Sum> s;
psum1D() : n(0), s(1, Sum()) {}
template < class Value >
psum1D(const vector<Value>& a) : n(ssize(a)), s(n + 1, Sum()) {
FOR(i, n) s[i + 1] = s[i] + static_cast<Sum>(a[i]);
}
// [l, r)
Sum v(int l, int r) const {
assert(0 <= l and l <= r and r <= n);
return s[r] - s[l];
}
void push_back(const Sum& x) {
s.push_back(s.back() + x);
n += 1;
}
};
template < class Value > struct psum2D {
int H, W;
vector<vector<Value>> A;
bool built;
psum2D(int H, int W) : H(H), W(W), A(H + 1, vector(W + 1, Value(0))), built(false) {}
// A[x][y] += v
void add(int x, int y, Value v) {
assert(not built);
assert(0 <= x and x < H);
assert(0 <= y and y < W);
A[x + 1][y + 1] += v;
}
void build() {
FOR(x, H) FOR(y, W + 1) A[x + 1][y] += A[x][y];
FOR(x, H + 1) FOR(y, W) A[x][y + 1] += A[x][y];
built = true;
}
// [xL, xR) * [yL, yR)
Value sum(int xL, int xR, int yL, int yR) {
assert(built);
assert(0 <= xL and xL <= xR and xR <= H);
assert(0 <= yL and yL <= yR and yR <= W);
return A[xR][yR] - A[xR][yL] - A[xL][yR] + A[xL][yL];
}
Value get(int x, int y) {
assert(built);
assert(0 <= x and x < H);
assert(0 <= y and y < W);
return sum(x, x + 1, y, y + 1);
}
};
template < class Value > struct imos2D {
int H, W;
vector<vector<Value>> A;
bool built;
imos2D(int H, int W) : H(H), W(W), A(H + 1, vector(W + 1, Value(0))), built(false) {}
void add(int xL, int xR, int yL, int yR, Value v) {
assert(not built);
assert(0 <= xL and xL <= xR and xR <= H);
assert(0 <= yL and yL <= yR and yR <= W);
A[xL][yL] += v;
A[xR][yL] -= v;
A[xL][yR] -= v;
A[xR][yR] += v;
}
void build() {
assert(not built);
FOR(i, H + 1) FOR(j, W) A[i][j + 1] += A[i][j];
FOR(i, H) FOR(j, W + 1) A[i + 1][j] += A[i][j];
built = true;
}
Value get(int x, int y) {
assert(built);
assert(0 <= x and x < H);
assert(0 <= y and y < W);
return A[x][y];
}
};
#line 3 "/Users/korogi/Desktop/cp-cpp/rnd.hpp"
namespace rnd {
u32 seed; mt19937 mt;
struct gen_seed { gen_seed() { seed = random_device()(); mt = mt19937(seed); } } gen_seed_instance;
// [L, R)
template < class Int > Int i(Int L, Int R) { assert(L < R); return uniform_int_distribution<Int>(L, R - 1)(mt); }
template < class Real > Real r(Real L, Real R) { assert(L <= R); return uniform_real_distribution<Real>(L, R)(mt); }
}
template < int n, array<u32, n> mod > struct hash_vector {
array<u32, n> a;
using hvec = hash_vector;
hvec& s(array<u32, n> a) { FOR(i, n) this->a[i] = a[i] < mod[i] ? a[i] : a[i] - mod[i]; return *this; }
hash_vector(u32 v = 0) { FOR(i, n) a[i] = v % mod[i] + mod[i]; s(a); }
hvec operator - () const { return hvec() - *this; }
hvec& operator += (const hvec& r) { FOR(i, n) a[i] += r.a[i]; return s(a); }
hvec& operator -= (const hvec& r) { FOR(i, n) a[i] += mod[i] - r.a[i]; return s(a); }
hvec& operator *= (const hvec& r) { FOR(i, n) a[i] = u64(a[i]) * r.a[i] % mod[i]; return *this; }
hvec& operator /= (const hvec& r) { return *this *= inv(r); }
hvec operator + (const hvec& r) const { return hvec(*this) += r; }
hvec operator - (const hvec& r) const { return hvec(*this) -= r; }
hvec operator * (const hvec& r) const { return hvec(*this) *= r; }
hvec operator / (const hvec& r) const { return hvec(*this) /= r; }
bool operator == (const hvec& r) const { return a == r.a; }
bool operator != (const hvec& r) const { return a != r.a; }
bool operator < (const hvec& r) const { return a < r.a; }
};
template < int n, array<u32, n> mod > hash_vector<n, mod> pow(hash_vector<n, mod> x, u64 m) {
hash_vector<n, mod> p(1);
for(; m; m >>= 1) { if(m & 1) p *= x; x *= x; }
return p;
}
template < int n, array<u32, n> mod > hash_vector<n, mod> inv(hash_vector<n, mod> x) {
hash_vector<n, mod> res;
FOR(i, n) {
u32 a = x.a[i], b = mod[i], u = 1, v = 0;
while(b) { u32 t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); }
res[i] = u;
}
return res;
}
template < int n, array<u32, n> mod > ostream& operator << (ostream& os, const hash_vector< n, mod >& x) { FOR(i, n) { if(i) os << ' '; os << x.a[i]; } return os; }
using hvec1 = hash_vector< 1, array<u32, 1>{999999937} >;
using hvec2 = hash_vector< 2, array<u32, 2>{999999937, 1000000007} >;
using hvec3 = hash_vector< 3, array<u32, 3>{999999937, 1000000007, 1000000009} >;
using hvec4 = hash_vector< 4, array<u32, 4>{999999937, 1000000007, 1000000009, 1000000021} >;
#line 280 "/Users/korogi/Desktop/cp-cpp/template.hpp"
namespace r52 {
int abs(int x) { return x >= 0 ? x : -x; }
i64 abs(i64 x) { return x >= 0 ? x : -x; }
i128 abs(i128 x) { return x >= 0 ? x : -x; }
}
#line 2 "/Users/korogi/Desktop/cp-cpp/ds/uf.hpp"
struct union_find {
int num_c; // 連結成分の個数
vector<int> data;
static constexpr int SKIP = -1;
union_find() {}
union_find(int n) : num_c(n), data(n, -1) {}
int unite(int x, int y) {
x = root(x), y = root(y);
if(x == y) return SKIP;
num_c--;
if(size(x) < size(y)) swap(x, y);
data[x] += data[y];
return data[y] = x;
}
int root(int x) { return data[x] < 0 ? x : data[x] = root(data[x]); }
int size(int x) { return -data[root(x)]; }
bool same(int x, int y) { return root(x) == root(y); }
// merge(x, y): s[x] <- s[x] + s[y]
template < class F >
int unite(int x, int y, const F& merge) {
x = root(x), y = root(y);
if(x == y) return SKIP;
num_c--;
if(size(x) < size(y)) swap(x, y);
data[x] += data[y];
data[y] = x;
merge(x, y); // s[x] <- s[x] + s[y]
return x;
}
};
#line 3 "/Users/korogi/Desktop/cp-cpp/tree/hld.hpp"
struct treeHLD {
int n, root;
struct edge { int to, i; };
vector<vector<edge>> g;
treeHLD(int n) : n(n), g(n), S(n, 0), D(n, 0), L(n, -1), R(n, -1), E(n, -1), id(0), decomped(0) {}
void add_edge(int u, int v, int i = 0) {
g[u].push_back({v, i});
g[v].push_back({u, i});
}
void decomp(int r = 0) {
root = r;
nxt.assign(n, r);
par.assign(n, r);
dfs0(r);
dfs1(r);
decomped = true;
}
template < class Func > void path_query_comm(int u, int v, bool vertex, const Func& f) const {
assert(decomped);
const int x = lca(u, v);
for(auto [a, b] : ascend(u, x)) tie(a, b) = minmax({a, b}), f(a, b);
if(vertex) f(L[x], L[x] + 1);
for(auto [a, b] : descend(x, v)) tie(a, b) = minmax({a, b}), f(a, b);
}
template < class Func > void path_query(int u, int v, bool vertex, const Func& f) const {
assert(decomped);
const int x = lca(u, v);
for(auto [a, b] : ascend(u, x)) f(a, b);
if(vertex) f(L[x], L[x] + 1);
for(auto [a, b] : descend(x, v)) f(a, b);
}
template < class Func > void subtree_query(int v, bool vertex, const Func& f) const {
assert(decomped);
f(L[v] + !vertex, R[v]);
}
// v != root ? parent[v] : -1
int parent(int v) const {
assert(decomped);
return v == root ? -1 : par[v];
}
int la(int v, int d) const {
assert(decomped);
while(v != -1) {
const int u = nxt[v];
if(L[u] <= L[v] - d) return E[L[v] - d];
d -= L[v] - L[u] + 1;
v = parent(u);
}
return v;
}
int lca(int u, int v) const {
assert(decomped);
for(; nxt[u] != nxt[v]; u = par[nxt[u]]) if(L[u] < L[v]) swap(u, v);
return D[u] < D[v] ? u : v;
}
// 辺の本数
int dist(int u, int v) const {
assert(decomped);
return D[u] + D[v] - D[lca(u, v)] * 2;
}
int jump(int u, int v, int d) const {
assert(decomped);
const int D_x = D[lca(u, v)];
if(d <= D[u] - D_x) return la(u, d);
d -= D[u] - D_x;
if(d <= D[v] - D_x) return la(v, D[v] - D_x - d);
return -1;
}
int in_subtree(int r, int v) const {
assert(decomped);
return L[r] < L[v] and R[v] <= R[r];
}
pair<int, int> seq_seg(int v) const {
assert(decomped);
return {L[v], R[v]};
}
int seq_pos(int v) const {
assert(decomped);
return L[v];
}
int seq_end(int v) const {
assert(decomped);
return R[v];
}
int depth(int v) const {
assert(decomped);
return D[v];
}
int subtree_size(int v) const {
assert(decomped);
return S[v];
}
int euler(int i) const {
assert(decomped);
return E[i];
}
bool is_decomped() const {
return decomped;
}
private:
int id, decomped;
vector<int> S, D, L, R, nxt, par, E;
void dfs0(int v) {
S[v] = 1;
for(edge& e : g[v]) {
if(e.to == par[v]) {
if(ssize(g[v]) >= 2 and e.to == g[v][0].to) swap(g[v][0], g[v][1]);
else continue;
}
D[e.to] = D[v] + 1;
par[e.to] = v;
dfs0(e.to);
S[v] += S[e.to];
if(S[e.to] > S[g[v][0].to]) swap(e, g[v][0]);
}
}
void dfs1(int v) {
L[v] = id++;
E[L[v]] = v;
for(edge e : g[v]) if(e.to != par[v]) {
nxt[e.to] = (e.to == g[v][0].to ? nxt[v] : e.to);
dfs1(e.to);
}
R[v] = id;
}
vector<pair<int, int>> ascend(int u, int v) const {
assert(decomped);
vector<pair<int, int>> res;
for(; nxt[u] != nxt[v]; u = par[nxt[u]]) res.push_back({L[u] + 1, L[nxt[u]]});
if(u != v) res.push_back({L[u] + 1, L[v] + 1});
return res;
}
vector<pair<int, int>> descend(int u, int v) const {
assert(decomped);
if(u == v) return {};
if(nxt[u] == nxt[v]) return {{L[u] + 1, L[v] + 1}};
vector<pair<int, int>> res = descend(u, par[nxt[v]]);
res.push_back({L[nxt[v]], L[v] + 1});
return res;
}
};
#line 4 "a.cpp"
int main() {
string S = in();
S = '(' + S + ')';
const int N = ssize(S);
vector<int> opp(N);
{
stack<int> I;
FOR(i, N) {
if(S[i] == '(') {
I.push(i);
} else {
assert(not I.empty());
const int j = I.top(); I.pop();
opp[i] = j;
opp[j] = i;
}
}
}
vector<int> idx(N, -1);
int M = 0;
FOR(i, N) {
if(i < opp[i]) {
idx[i] = M++;
} else {
idx[i] = idx[opp[i]];
}
}
treeHLD tree(M);
vector<vector<int>> G(M);
vector<int> pos(M, -1);
{
vector<int> I;
FOR(i, N) {
if(S[i] == '(') {
if(not I.empty()) {
const int p = idx[I.back()];
const int v = idx[i];
tree.add_edge(p, v);
pos[v] = ssize(G[p]);
G[p].push_back(v);
}
I.push_back(i);
} else {
assert(not I.empty());
I.pop_back();
}
}
}
tree.decomp(0);
vector<int> W(M, 0);
auto dfs = [&](auto dfs, int v, int d) -> void {
W[v] = d;
const int K = ssize(G[v]);
FOR(i, K) {
const int to = G[v][i];
dfs(dfs, to, d + min(i + 1, K - i));
}
};
dfs(dfs, 0, 0);
int Q = in();
FOR(Q) {
int L = in(), R = in();
L = idx[L];
R = idx[R];
if(L == R) {
print(0);
} else {
const int X = tree.lca(L, R);
if(L == X or R == X) {
print(abs(W[L] - W[R]));
} else {
const int A = tree.jump(X, L, 1);
const int B = tree.jump(X, R, 1);
const int I = pos[A];
const int J = pos[B];
const int K = ssize(G[X]);
const int D = min(abs(I - J), K + 1 - abs(I - J));
print(W[L] - W[A] + W[R] - W[B] + D);
}
}
}
}