結果
| 問題 | No.2360 Path to Integer |
| ユーザー |
 NyaanNyaan
|
| 提出日時 | 2024-04-14 19:12:06 |
| 言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
| 結果 |
AC
|
| 実行時間 | 653 ms / 2,500 ms |
| コード長 | 25,294 bytes |
| コンパイル時間 | 3,147 ms |
| コンパイル使用メモリ | 266,692 KB |
| 実行使用メモリ | 23,552 KB |
| 最終ジャッジ日時 | 2024-10-03 20:50:08 |
| 合計ジャッジ時間 | 8,119 ms |
|
ジャッジサーバーID （参考情報） |
judge2 / judge5 |
（要ログイン）
テストケース
テストケース表示| 入力 | 結果 | 実行時間 実行使用メモリ |
|---|---|---|
| testcase_00 | AC | 2 ms
6,816 KB |
| testcase_01 | AC | 1 ms
6,820 KB |
| testcase_02 | AC | 2 ms
6,820 KB |
| testcase_03 | AC | 2 ms
6,820 KB |
| testcase_04 | AC | 2 ms
6,816 KB |
| testcase_05 | AC | 2 ms
6,820 KB |
| testcase_06 | AC | 2 ms
6,816 KB |
| testcase_07 | AC | 5 ms
6,816 KB |
| testcase_08 | AC | 41 ms
6,820 KB |
| testcase_09 | AC | 649 ms
21,284 KB |
| testcase_10 | AC | 167 ms
23,424 KB |
| testcase_11 | AC | 170 ms
23,552 KB |
| testcase_12 | AC | 170 ms
22,400 KB |
| testcase_13 | AC | 653 ms
21,376 KB |
| testcase_14 | AC | 425 ms
23,552 KB |
| testcase_15 | AC | 638 ms
21,504 KB |
| testcase_16 | AC | 420 ms
23,512 KB |
ソースコード
/**
* date : 2024-04-14 19:11:57
* author : Nyaan
*/
#define NDEBUG
using namespace std;
// intrinstic
#include <immintrin.h>
#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cctype>
#include <cfenv>
#include <cfloat>
#include <chrono>
#include <cinttypes>
#include <climits>
#include <cmath>
#include <complex>
#include <cstdarg>
#include <cstddef>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <deque>
#include <fstream>
#include <functional>
#include <initializer_list>
#include <iomanip>
#include <ios>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <streambuf>
#include <string>
#include <tuple>
#include <type_traits>
#include <typeinfo>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
// utility
namespace Nyaan {
using ll = long long;
using i64 = long long;
using u64 = unsigned long long;
using i128 = __int128_t;
using u128 = __uint128_t;
template <typename T>
using V = vector<T>;
template <typename T>
using VV = vector<vector<T>>;
using vi = vector<int>;
using vl = vector<long long>;
using vd = V<double>;
using vs = V<string>;
using vvi = vector<vector<int>>;
using vvl = vector<vector<long long>>;
template <typename T>
using minpq = priority_queue<T, vector<T>, greater<T>>;
template <typename T, typename U>
struct P : pair<T, U> {
template <typename... Args>
P(Args... args) : pair<T, U>(args...) {}
using pair<T, U>::first;
using pair<T, U>::second;
P &operator+=(const P &r) {
first += r.first;
second += r.second;
return *this;
}
P &operator-=(const P &r) {
first -= r.first;
second -= r.second;
return *this;
}
P &operator*=(const P &r) {
first *= r.first;
second *= r.second;
return *this;
}
template <typename S>
P &operator*=(const S &r) {
first *= r, second *= r;
return *this;
}
P operator+(const P &r) const { return P(*this) += r; }
P operator-(const P &r) const { return P(*this) -= r; }
P operator*(const P &r) const { return P(*this) *= r; }
template <typename S>
P operator*(const S &r) const {
return P(*this) *= r;
}
P operator-() const { return P{-first, -second}; }
};
using pl = P<ll, ll>;
using pi = P<int, int>;
using vp = V<pl>;
constexpr int inf = 1001001001;
constexpr long long infLL = 4004004004004004004LL;
template <typename T>
int sz(const T &t) {
return t.size();
}
template <typename T, typename U>
inline bool amin(T &x, U y) {
return (y < x) ? (x = y, true) : false;
}
template <typename T, typename U>
inline bool amax(T &x, U y) {
return (x < y) ? (x = y, true) : false;
}
template <typename T>
inline T Max(const vector<T> &v) {
return *max_element(begin(v), end(v));
}
template <typename T>
inline T Min(const vector<T> &v) {
return *min_element(begin(v), end(v));
}
template <typename T>
inline long long Sum(const vector<T> &v) {
return accumulate(begin(v), end(v), 0LL);
}
template <typename T>
int lb(const vector<T> &v, const T &a) {
return lower_bound(begin(v), end(v), a) - begin(v);
}
template <typename T>
int ub(const vector<T> &v, const T &a) {
return upper_bound(begin(v), end(v), a) - begin(v);
}
constexpr long long TEN(int n) {
long long ret = 1, x = 10;
for (; n; x *= x, n >>= 1) ret *= (n & 1 ? x : 1);
return ret;
}
template <typename T, typename U>
pair<T, U> mkp(const T &t, const U &u) {
return make_pair(t, u);
}
template <typename T>
vector<T> mkrui(const vector<T> &v, bool rev = false) {
vector<T> ret(v.size() + 1);
if (rev) {
for (int i = int(v.size()) - 1; i >= 0; i--) ret[i] = v[i] + ret[i + 1];
} else {
for (int i = 0; i < int(v.size()); i++) ret[i + 1] = ret[i] + v[i];
}
return ret;
};
template <typename T>
vector<T> mkuni(const vector<T> &v) {
vector<T> ret(v);
sort(ret.begin(), ret.end());
ret.erase(unique(ret.begin(), ret.end()), ret.end());
return ret;
}
template <typename F>
vector<int> mkord(int N, F f) {
vector<int> ord(N);
iota(begin(ord), end(ord), 0);
sort(begin(ord), end(ord), f);
return ord;
}
template <typename T>
vector<int> mkinv(vector<T> &v) {
int max_val = *max_element(begin(v), end(v));
vector<int> inv(max_val + 1, -1);
for (int i = 0; i < (int)v.size(); i++) inv[v[i]] = i;
return inv;
}
vector<int> mkiota(int n) {
vector<int> ret(n);
iota(begin(ret), end(ret), 0);
return ret;
}
template <typename T>
T mkrev(const T &v) {
T w{v};
reverse(begin(w), end(w));
return w;
}
template <typename T>
bool nxp(T &v) {
return next_permutation(begin(v), end(v));
}
// 返り値の型は入力の T に依存
// i 要素目 : [0, a[i])
template <typename T>
vector<vector<T>> product(const vector<T> &a) {
vector<vector<T>> ret;
vector<T> v;
auto dfs = [&](auto rc, int i) -> void {
if (i == (int)a.size()) {
ret.push_back(v);
return;
}
for (int j = 0; j < a[i]; j++) v.push_back(j), rc(rc, i + 1), v.pop_back();
};
dfs(dfs, 0);
return ret;
}
// F : function(void(T&)), mod を取る操作
// T : 整数型のときはオーバーフローに注意する
template <typename T>
T Power(T a, long long n, const T &I, const function<void(T &)> &f) {
T res = I;
for (; n; f(a = a * a), n >>= 1) {
if (n & 1) f(res = res * a);
}
return res;
}
// T : 整数型のときはオーバーフローに注意する
template <typename T>
T Power(T a, long long n, const T &I = T{1}) {
return Power(a, n, I, function<void(T &)>{[](T &) -> void {}});
}
template <typename T>
T Rev(const T &v) {
T res = v;
reverse(begin(res), end(res));
return res;
}
template <typename T>
vector<T> Transpose(const vector<T> &v) {
using U = typename T::value_type;
int H = v.size(), W = v[0].size();
vector res(W, T(H, U{}));
for (int i = 0; i < H; i++) {
for (int j = 0; j < W; j++) {
res[j][i] = v[i][j];
}
}
return res;
}
template <typename T>
vector<T> Rotate(const vector<T> &v, int clockwise = true) {
using U = typename T::value_type;
int H = v.size(), W = v[0].size();
vector res(W, T(H, U{}));
for (int i = 0; i < H; i++) {
for (int j = 0; j < W; j++) {
if (clockwise) {
res[W - 1 - j][i] = v[i][j];
} else {
res[j][H - 1 - i] = v[i][j];
}
}
}
return res;
}
} // namespace Nyaan
// bit operation
namespace Nyaan {
__attribute__((target("popcnt"))) inline int popcnt(const u64 &a) {
return __builtin_popcountll(a);
}
inline int lsb(const u64 &a) { return a ? __builtin_ctzll(a) : 64; }
inline int ctz(const u64 &a) { return a ? __builtin_ctzll(a) : 64; }
inline int msb(const u64 &a) { return a ? 63 - __builtin_clzll(a) : -1; }
template <typename T>
inline int gbit(const T &a, int i) {
return (a >> i) & 1;
}
template <typename T>
inline void sbit(T &a, int i, bool b) {
if (gbit(a, i) != b) a ^= T(1) << i;
}
constexpr long long PW(int n) { return 1LL << n; }
constexpr long long MSK(int n) { return (1LL << n) - 1; }
} // namespace Nyaan
// inout
namespace Nyaan {
template <typename T, typename U>
ostream &operator<<(ostream &os, const pair<T, U> &p) {
os << p.first << " " << p.second;
return os;
}
template <typename T, typename U>
istream &operator>>(istream &is, pair<T, U> &p) {
is >> p.first >> p.second;
return is;
}
template <typename T>
ostream &operator<<(ostream &os, const vector<T> &v) {
int s = (int)v.size();
for (int i = 0; i < s; i++) os << (i ? " " : "") << v[i];
return os;
}
template <typename T>
istream &operator>>(istream &is, vector<T> &v) {
for (auto &x : v) is >> x;
return is;
}
istream &operator>>(istream &is, __int128_t &x) {
string S;
is >> S;
x = 0;
int flag = 0;
for (auto &c : S) {
if (c == '-') {
flag = true;
continue;
}
x *= 10;
x += c - '0';
}
if (flag) x = -x;
return is;
}
istream &operator>>(istream &is, __uint128_t &x) {
string S;
is >> S;
x = 0;
for (auto &c : S) {
x *= 10;
x += c - '0';
}
return is;
}
ostream &operator<<(ostream &os, __int128_t x) {
if (x == 0) return os << 0;
if (x < 0) os << '-', x = -x;
string S;
while (x) S.push_back('0' + x % 10), x /= 10;
reverse(begin(S), end(S));
return os << S;
}
ostream &operator<<(ostream &os, __uint128_t x) {
if (x == 0) return os << 0;
string S;
while (x) S.push_back('0' + x % 10), x /= 10;
reverse(begin(S), end(S));
return os << S;
}
void in() {}
template <typename T, class... U>
void in(T &t, U &...u) {
cin >> t;
in(u...);
}
void out() { cout << "\n"; }
template <typename T, class... U, char sep = ' '>
void out(const T &t, const U &...u) {
cout << t;
if (sizeof...(u)) cout << sep;
out(u...);
}
struct IoSetupNya {
IoSetupNya() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
cout << fixed << setprecision(15);
cerr << fixed << setprecision(7);
}
} iosetupnya;
} // namespace Nyaan
// debug
#ifdef NyaanDebug
#define trc(...) (void(0))
#else
#define trc(...) (void(0))
#endif
#ifdef NyaanLocal
#define trc2(...) (void(0))
#else
#define trc2(...) (void(0))
#endif
// macro
#define each(x, v) for (auto&& x : v)
#define each2(x, y, v) for (auto&& [x, y] : v)
#define all(v) (v).begin(), (v).end()
#define rep(i, N) for (long long i = 0; i < (long long)(N); i++)
#define repr(i, N) for (long long i = (long long)(N)-1; i >= 0; i--)
#define rep1(i, N) for (long long i = 1; i <= (long long)(N); i++)
#define repr1(i, N) for (long long i = (N); (long long)(i) > 0; i--)
#define reg(i, a, b) for (long long i = (a); i < (b); i++)
#define regr(i, a, b) for (long long i = (b)-1; i >= (a); i--)
#define fi first
#define se second
#define ini(...) \
int __VA_ARGS__; \
in(__VA_ARGS__)
#define inl(...) \
long long __VA_ARGS__; \
in(__VA_ARGS__)
#define ins(...) \
string __VA_ARGS__; \
in(__VA_ARGS__)
#define in2(s, t) \
for (int i = 0; i < (int)s.size(); i++) { \
in(s[i], t[i]); \
}
#define in3(s, t, u) \
for (int i = 0; i < (int)s.size(); i++) { \
in(s[i], t[i], u[i]); \
}
#define in4(s, t, u, v) \
for (int i = 0; i < (int)s.size(); i++) { \
in(s[i], t[i], u[i], v[i]); \
}
#define die(...) \
do { \
Nyaan::out(__VA_ARGS__); \
return; \
} while (0)
namespace Nyaan {
void solve();
}
int main() { Nyaan::solve(); }
//
namespace DynamicRerootingImpl {
template <typename Point, Point (*rake)(const Point &, const Point &)>
struct SplayTreeforDashedEdge {
struct Node {
Node *l, *r, *p;
Point key, sum;
explicit Node(const Point &_key)
: l(nullptr), r(nullptr), p(nullptr), key(_key), sum(_key) {}
};
SplayTreeforDashedEdge() {}
using NP = Node *;
void rotr(NP t) {
NP x = t->p, y = x->p;
if ((x->l = t->r)) t->r->p = x;
t->r = x, x->p = t;
update(x), update(t);
if ((t->p = y)) {
if (y->l == x) y->l = t;
if (y->r == x) y->r = t;
}
}
void rotl(NP t) {
NP x = t->p, y = x->p;
if ((x->r = t->l)) t->l->p = x;
t->l = x, x->p = t;
update(x), update(t);
if ((t->p = y)) {
if (y->l == x) y->l = t;
if (y->r == x) y->r = t;
}
}
void update(NP t) {
t->sum = t->key;
if (t->l) t->sum = rake(t->sum, t->l->sum);
if (t->r) t->sum = rake(t->sum, t->r->sum);
}
NP get_right(NP t) {
while (t->r) t = t->r;
return t;
}
NP alloc(const Point &v) {
auto t = new Node(v);
update(t);
return t;
}
void splay(NP t) {
while (t->p) {
NP q = t->p;
if (!q->p) {
if (q->l == t)
rotr(t);
else
rotl(t);
} else {
NP r = q->p;
if (r->l == q) {
if (q->l == t)
rotr(q), rotr(t);
else
rotl(t), rotr(t);
} else {
if (q->r == t)
rotl(q), rotl(t);
else
rotr(t), rotl(t);
}
}
}
}
NP insert(NP t, const Point &v) {
if (not t) {
t = alloc(v);
return t;
} else {
NP cur = get_right(t), z = alloc(v);
splay(cur);
z->p = cur;
cur->r = z;
update(cur);
splay(z);
return z;
}
}
NP erase(NP t) {
splay(t);
NP x = t->l, y = t->r;
delete t;
if (not x) {
t = y;
if (t) t->p = nullptr;
} else if (not y) {
t = x;
t->p = nullptr;
} else {
x->p = nullptr;
t = get_right(x);
splay(t);
t->r = y;
y->p = t;
update(t);
}
return t;
}
};
template <typename Path, typename Point, typename Info,
Path (*vertex)(const Info &),
Path (*compress)(const Path &, const Path &),
Point (*rake)(const Point &, const Point &),
Point (*add_edge)(const Path &),
Path (*add_vertex)(const Point &, const Info &)>
struct TopTree {
private:
struct Node {
Node *l, *r, *p;
Info info;
Path key, sum, mus;
typename SplayTreeforDashedEdge<Point, rake>::Node *light, *belong;
bool rev;
bool is_root() const { return not p or (p->l != this and p->r != this); }
explicit Node(const Info _info)
: l(nullptr),
r(nullptr),
p(nullptr),
info(_info),
light(nullptr),
belong(nullptr),
rev(false) {}
};
public:
using NP = Node *;
SplayTreeforDashedEdge<Point, rake> splay_tree;
private:
void toggle(NP t) {
swap(t->l, t->r);
swap(t->sum, t->mus);
t->rev ^= true;
}
void rotr(NP t) {
NP x = t->p, y = x->p;
push(x), push(t);
if ((x->l = t->r)) t->r->p = x;
t->r = x, x->p = t;
update(x), update(t);
if ((t->p = y)) {
if (y->l == x) y->l = t;
if (y->r == x) y->r = t;
}
}
void rotl(NP t) {
NP x = t->p, y = x->p;
push(x), push(t);
if ((x->r = t->l)) t->l->p = x;
t->l = x, x->p = t;
update(x), update(t);
if ((t->p = y)) {
if (y->l == x) y->l = t;
if (y->r == x) y->r = t;
}
}
public:
TopTree() : splay_tree{} {}
void push(NP t) {
if (t->rev) {
if (t->l) toggle(t->l);
if (t->r) toggle(t->r);
t->rev = false;
}
}
void push_rev(NP t) {
if (t->rev) {
if (t->l) toggle(t->l);
if (t->r) toggle(t->r);
t->rev = false;
}
}
void update(NP t) {
Path key = t->light ? add_vertex(t->light->sum, t->info) : vertex(t->info);
Path sum = key, mus = key;
if (t->l) sum = compress(t->l->sum, sum), mus = compress(mus, t->l->mus);
if (t->r) sum = compress(sum, t->r->sum), mus = compress(t->r->mus, mus);
t->key = key, t->sum = sum, t->mus = mus;
}
void splay(NP t) {
push(t);
{
NP rot = t;
while (not rot->is_root()) rot = rot->p;
t->belong = rot->belong;
if (t != rot) rot->belong = nullptr;
}
while (not t->is_root()) {
NP q = t->p;
if (q->is_root()) {
push_rev(q), push_rev(t);
if (q->l == t)
rotr(t);
else
rotl(t);
} else {
NP r = q->p;
push_rev(r), push_rev(q), push_rev(t);
if (r->l == q) {
if (q->l == t)
rotr(q), rotr(t);
else
rotl(t), rotr(t);
} else {
if (q->r == t)
rotl(q), rotl(t);
else
rotr(t), rotl(t);
}
}
}
}
NP expose(NP t) {
NP rp = nullptr;
for (NP cur = t; cur; cur = cur->p) {
splay(cur);
if (cur->r) {
cur->light = splay_tree.insert(cur->light, add_edge(cur->r->sum));
cur->r->belong = cur->light;
}
cur->r = rp;
if (cur->r) {
splay_tree.splay(cur->r->belong);
push(cur->r);
cur->light = splay_tree.erase(cur->r->belong);
}
update(cur);
rp = cur;
}
splay(t);
return rp;
}
void link(NP child, NP parent) {
expose(parent);
expose(child);
child->p = parent;
parent->r = child;
update(parent);
}
void cut(NP child) {
expose(child);
NP parent = child->l;
child->l = nullptr;
parent->p = nullptr;
update(child);
}
void evert(NP t) {
expose(t);
toggle(t);
push(t);
}
NP alloc(const Info &info) {
NP t = new Node(info);
update(t);
return t;
}
bool is_connected(NP u, NP v) {
expose(u), expose(v);
return u == v or u->p;
}
NP lca(NP u, NP v) {
if (not is_connected(u, v)) return nullptr;
expose(u);
return expose(v);
}
void set_key(NP t, const Info &v) {
expose(t);
t->info = v;
update(t);
}
// u を根とする sum
Path query(NP u) {
evert(u);
return u->sum;
}
// root を根, u を部分木の根とする sum
Path query_subtree(NP root, NP u) {
evert(root);
expose(u);
NP l = u->l;
u->l = nullptr;
update(u);
auto ret = u->sum;
u->l = l;
update(u);
return ret;
}
};
template <typename Path, typename Point, typename Info,
Path (*vertex)(const Info &),
Path (*compress)(const Path &, const Path &),
Point (*rake)(const Point &, const Point &),
Point (*Add_edge)(const Path &),
Path (*add_vertex)(const Point &, const Info &)>
struct DynamicRerooting {
int n;
TopTree<Path, Point, Info, vertex, compress, rake, Add_edge, add_vertex> tt;
using NP = typename decltype(tt)::NP;
vector<NP> vs;
DynamicRerooting(int _n, const vector<Info> &info) : n(_n), vs(n) {
for (int i = 0; i < n; i++) vs[i] = tt.alloc(info[i]);
}
// u-v 間に辺を追加
void add_edge(int u, int v) {
tt.evert(vs[u]);
tt.link(vs[u], vs[v]);
}
// u-v 間の辺を削除
void del_edge(int u, int v) {
tt.evert(vs[u]);
tt.cut(vs[v]);
}
// 頂点 u の情報を取得
Info get_info(int u) { return vs[u]->info; }
// 頂点 u の情報を設定
void set_info(int u, const Info &info) { tt.set_key(vs[u], info); }
// 頂点 u を根とするクエリ
Path query(int u) { return tt.query(vs[u]); }
// 頂点 root を根, 頂点 u を部分木の根とするクエリ
Path query_subtree(int root, int u) {
return tt.query_subtree(vs[root], vs[u]);
}
};
} // namespace DynamicRerootingImpl
using DynamicRerootingImpl::DynamicRerooting;
using DynamicRerootingImpl::TopTree;
/*
struct Path {
};
struct Point {
};
struct Info {
};
Path vertex(const Info &i) {
}
Path compress(const Path &p, const Path &c) {
}
Point rake(const Point &a, const Point &b) {
}
Point add_edge(const Path &a) {
}
Path add_vertex(const Point &a, const Info &i) {
}
using DR = DynamicRerooting<Path, Point, Info, vertex, compress, rake, add_edge,
add_vertex>;
*/
//
template <uint32_t mod>
struct LazyMontgomeryModInt {
using mint = LazyMontgomeryModInt;
using i32 = int32_t;
using u32 = uint32_t;
using u64 = uint64_t;
static constexpr u32 get_r() {
u32 ret = mod;
for (i32 i = 0; i < 4; ++i) ret *= 2 - mod * ret;
return ret;
}
static constexpr u32 r = get_r();
static constexpr u32 n2 = -u64(mod) % mod;
static_assert(mod < (1 << 30), "invalid, mod >= 2 ^ 30");
static_assert((mod & 1) == 1, "invalid, mod % 2 == 0");
static_assert(r * mod == 1, "this code has bugs.");
u32 a;
constexpr LazyMontgomeryModInt() : a(0) {}
constexpr LazyMontgomeryModInt(const int64_t &b)
: a(reduce(u64(b % mod + mod) * n2)){};
static constexpr u32 reduce(const u64 &b) {
return (b + u64(u32(b) * u32(-r)) * mod) >> 32;
}
constexpr mint &operator+=(const mint &b) {
if (i32(a += b.a - 2 * mod) < 0) a += 2 * mod;
return *this;
}
constexpr mint &operator-=(const mint &b) {
if (i32(a -= b.a) < 0) a += 2 * mod;
return *this;
}
constexpr mint &operator*=(const mint &b) {
a = reduce(u64(a) * b.a);
return *this;
}
constexpr mint &operator/=(const mint &b) {
*this *= b.inverse();
return *this;
}
constexpr mint operator+(const mint &b) const { return mint(*this) += b; }
constexpr mint operator-(const mint &b) const { return mint(*this) -= b; }
constexpr mint operator*(const mint &b) const { return mint(*this) *= b; }
constexpr mint operator/(const mint &b) const { return mint(*this) /= b; }
constexpr bool operator==(const mint &b) const {
return (a >= mod ? a - mod : a) == (b.a >= mod ? b.a - mod : b.a);
}
constexpr bool operator!=(const mint &b) const {
return (a >= mod ? a - mod : a) != (b.a >= mod ? b.a - mod : b.a);
}
constexpr mint operator-() const { return mint() - mint(*this); }
constexpr mint operator+() const { return mint(*this); }
constexpr mint pow(u64 n) const {
mint ret(1), mul(*this);
while (n > 0) {
if (n & 1) ret *= mul;
mul *= mul;
n >>= 1;
}
return ret;
}
constexpr mint inverse() const {
int x = get(), y = mod, u = 1, v = 0, t = 0, tmp = 0;
while (y > 0) {
t = x / y;
x -= t * y, u -= t * v;
tmp = x, x = y, y = tmp;
tmp = u, u = v, v = tmp;
}
return mint{u};
}
friend ostream &operator<<(ostream &os, const mint &b) {
return os << b.get();
}
friend istream &operator>>(istream &is, mint &b) {
int64_t t;
is >> t;
b = LazyMontgomeryModInt<mod>(t);
return (is);
}
constexpr u32 get() const {
u32 ret = reduce(a);
return ret >= mod ? ret - mod : ret;
}
static constexpr u32 get_mod() { return mod; }
};
using namespace std;
// コンストラクタの MAX に 「C(n, r) や fac(n) でクエリを投げる最大の n 」
// を入れると倍速くらいになる
// mod を超えて前計算して 0 割りを踏むバグは対策済み
template <typename T>
struct Binomial {
vector<T> f, g, h;
Binomial(int MAX = 0) {
assert(T::get_mod() != 0 && "Binomial<mint>()");
f.resize(1, T{1});
g.resize(1, T{1});
h.resize(1, T{1});
if (MAX > 0) extend(MAX + 1);
}
void extend(int m = -1) {
int n = f.size();
if (m == -1) m = n * 2;
m = min<int>(m, T::get_mod());
if (n >= m) return;
f.resize(m);
g.resize(m);
h.resize(m);
for (int i = n; i < m; i++) f[i] = f[i - 1] * T(i);
g[m - 1] = f[m - 1].inverse();
h[m - 1] = g[m - 1] * f[m - 2];
for (int i = m - 2; i >= n; i--) {
g[i] = g[i + 1] * T(i + 1);
h[i] = g[i] * f[i - 1];
}
}
T fac(int i) {
if (i < 0) return T(0);
while (i >= (int)f.size()) extend();
return f[i];
}
T finv(int i) {
if (i < 0) return T(0);
while (i >= (int)g.size()) extend();
return g[i];
}
T inv(int i) {
if (i < 0) return -inv(-i);
while (i >= (int)h.size()) extend();
return h[i];
}
T C(int n, int r) {
if (n < 0 || n < r || r < 0) return T(0);
return fac(n) * finv(n - r) * finv(r);
}
inline T operator()(int n, int r) { return C(n, r); }
template <typename I>
T multinomial(const vector<I>& r) {
static_assert(is_integral<I>::value == true);
int n = 0;
for (auto& x : r) {
if (x < 0) return T(0);
n += x;
}
T res = fac(n);
for (auto& x : r) res *= finv(x);
return res;
}
template <typename I>
T operator()(const vector<I>& r) {
return multinomial(r);
}
T C_naive(int n, int r) {
if (n < 0 || n < r || r < 0) return T(0);
T ret = T(1);
r = min(r, n - r);
for (int i = 1; i <= r; ++i) ret *= inv(i) * (n--);
return ret;
}
T P(int n, int r) {
if (n < 0 || n < r || r < 0) return T(0);
return fac(n) * finv(n - r);
}
// [x^r] 1 / (1-x)^n
T H(int n, int r) {
if (n < 0 || r < 0) return T(0);
return r == 0 ? 1 : C(n + r - 1, r);
}
};
//
using namespace Nyaan;
using mint = LazyMontgomeryModInt<998244353>;
// using mint = LazyMontgomeryModInt<1000000007>;
using vm = vector<mint>;
using vvm = vector<vm>;
Binomial<mint> C;
struct Path {
mint a, b, s, x;
};
struct Point {
mint s, x;
};
struct Info {
mint a, b;
};
Path vertex(const Info &i) { return {i.a, i.b, i.b, 1}; }
Path compress(const Path &p, const Path &c) {
return {p.a * c.a, p.a * c.b + p.b, p.s + p.a * c.s + p.b * c.x, p.x + c.x};
}
Point rake(const Point &a, const Point &b) { return {a.s + b.s, a.x + b.x}; }
Point add_edge(const Path &a) { return {a.s, a.x}; }
Path add_vertex(const Point &a, const Info &i) {
return {i.a, i.b, a.s * i.a + i.b * a.x + i.b, a.x + 1};
}
using DR = DynamicRerooting<Path, Point, Info, vertex, compress, rake, add_edge,
add_vertex>;
void q() {
ini(N);
V<string> A(N);
in(A);
V<Info> init(N);
rep(i, N) init[i] = {TEN(sz(A[i])), stoll(A[i])};
DR dr{N, init};
rep(i, N - 1) {
ini(u, v);
--u, --v;
dr.add_edge(u, v);
}
mint ans = 0;
rep(i, N) {
auto p = dr.query(i);
trc(p.a, p.b, p.s, p.x);
ans += p.s;
}
out(ans);
}
void Nyaan::solve() {
int t = 1;
// in(t);
while (t--) q();
}