結果
| 問題 | No.1728 [Cherry 3rd Tune] Bullet |
| ユーザー |
 NyaanNyaan
|
| 提出日時 | 2021-10-29 21:37:40 |
| 言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
| 結果 |
AC
|
| 実行時間 | 155 ms / 2,000 ms |
| コード長 | 31,006 bytes |
| コンパイル時間 | 3,367 ms |
| コンパイル使用メモリ | 293,068 KB |
| 実行使用メモリ | 5,248 KB |
| 最終ジャッジ日時 | 2024-10-07 10:24:20 |
| 合計ジャッジ時間 | 4,444 ms |
|
ジャッジサーバーID （参考情報） |
judge4 / judge2 |
（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
5,248 KB |
| testcase_01 | AC | 1 ms
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| testcase_02 | AC | 2 ms
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| testcase_03 | AC | 2 ms
5,248 KB |
| testcase_04 | AC | 1 ms
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| testcase_05 | AC | 2 ms
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| testcase_06 | AC | 1 ms
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| testcase_07 | AC | 2 ms
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| testcase_08 | AC | 2 ms
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| testcase_09 | AC | 2 ms
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| testcase_10 | AC | 2 ms
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| testcase_11 | AC | 2 ms
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| testcase_12 | AC | 2 ms
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| testcase_13 | AC | 2 ms
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| testcase_14 | AC | 2 ms
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| testcase_15 | AC | 2 ms
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| testcase_16 | AC | 2 ms
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| testcase_17 | AC | 2 ms
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| testcase_18 | AC | 1 ms
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| testcase_19 | AC | 2 ms
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| testcase_20 | AC | 2 ms
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| testcase_21 | AC | 2 ms
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| testcase_22 | AC | 2 ms
5,248 KB |
| testcase_23 | AC | 155 ms
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| testcase_24 | AC | 107 ms
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| testcase_25 | AC | 2 ms
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| testcase_26 | AC | 3 ms
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ソースコード
/**
* date : 2021-10-29 21:37:30
*/
#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, 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;
T &x() { return first; }
const T &x() const { return first; }
U &y() { return second; }
const U &y() const { return 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;
}
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; }
};
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;
}
} // namespace Nyaan
// bit operation
namespace Nyaan {
__attribute__((target("popcnt"))) inline int popcnt(const u64 &a) {
return _mm_popcnt_u64(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;
}
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...);
}
void outr() {}
template <typename T, class... U, char sep = ' '>
void outr(const T &t, const U &... u) {
cout << t;
outr(u...);
}
struct IoSetupNya {
IoSetupNya() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
cout << fixed << setprecision(15);
cerr << fixed << setprecision(7);
}
} iosetupnya;
} // namespace Nyaan
// debug
namespace DebugImpl {
template <typename U, typename = void>
struct is_specialize : false_type {};
template <typename U>
struct is_specialize<
U, typename conditional<false, typename U::iterator, void>::type>
: true_type {};
template <typename U>
struct is_specialize<
U, typename conditional<false, decltype(U::first), void>::type>
: true_type {};
template <typename U>
struct is_specialize<U, enable_if_t<is_integral<U>::value, void>> : true_type {
};
void dump(const char& t) { cerr << t; }
void dump(const string& t) { cerr << t; }
void dump(const bool& t) { cerr << (t ? "true" : "false"); }
template <typename U,
enable_if_t<!is_specialize<U>::value, nullptr_t> = nullptr>
void dump(const U& t) {
cerr << t;
}
template <typename T>
void dump(const T& t, enable_if_t<is_integral<T>::value>* = nullptr) {
string res;
if (t == Nyaan::inf) res = "inf";
if constexpr (is_signed<T>::value) {
if (t == -Nyaan::inf) res = "-inf";
}
if constexpr (sizeof(T) == 8) {
if (t == Nyaan::infLL) res = "inf";
if constexpr (is_signed<T>::value) {
if (t == -Nyaan::infLL) res = "-inf";
}
}
if (res.empty()) res = to_string(t);
cerr << res;
}
template <typename T, typename U>
void dump(const pair<T, U>&);
template <typename T>
void dump(const pair<T*, int>&);
template <typename T>
void dump(const T& t,
enable_if_t<!is_void<typename T::iterator>::value>* = nullptr) {
cerr << "[ ";
for (auto it = t.begin(); it != t.end();) {
dump(*it);
cerr << (++it == t.end() ? "" : ", ");
}
cerr << " ]";
}
template <typename T, typename U>
void dump(const pair<T, U>& t) {
cerr << "( ";
dump(t.first);
cerr << ", ";
dump(t.second);
cerr << " )";
}
template <typename T>
void dump(const pair<T*, int>& t) {
cerr << "[ ";
for (int i = 0; i < t.second; i++) {
dump(t.first[i]);
cerr << (i == t.second - 1 ? "" : ", ");
}
cerr << " ]";
}
void trace() { cerr << endl; }
template <typename Head, typename... Tail>
void trace(Head&& head, Tail&&... tail) {
cerr << " ";
dump(head);
if (sizeof...(tail) != 0) cerr << ",";
trace(forward<Tail>(tail)...);
}
} // namespace DebugImpl
#ifdef NyaanDebug
#define trc(...) \
do { \
cerr << "## " << #__VA_ARGS__ << " = "; \
DebugImpl::trace(__VA_ARGS__); \
} while (0)
#else
#define trc(...) (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(); }
//
/*
#include "fps/ntt-friendly-fps.hpp"
#include "matrix/inverse-matrix.hpp"
#include "misc/rng.hpp"
#include "misc/timer.hpp"
#include "modint/montgomery-modint.hpp"
#include "modulo/binomial.hpp"
//
using namespace Nyaan;
using mint = LazyMontgomeryModInt<998244353>;
Binomial<mint> C;
using fps = FormalPowerSeries<mint>;
using namespace Nyaan;
fps convolution998244353_large(const fps &a, const fps &b) {
int len = 1 << 23;
if (a.empty() || b.empty()) return fps{};
if ((int)a.size() + (int)b.size() - 1 <= len) return a * b;
vector<fps> as, bs;
for (int i = 0; i < (int)a.size(); i += len / 2) {
fps v{begin(a) + i, begin(a) + min<int>(i + len / 2, a.size())};
v.resize(len);
v.ntt();
as.push_back(v);
}
for (int i = 0; i < (int)b.size(); i += len / 2) {
fps v{begin(b) + i, begin(b) + min<int>(i + len / 2, b.size())};
v.resize(len);
v.ntt();
bs.push_back(v);
}
vector<fps> cs(as.size() + bs.size() - 1, fps(len));
for (int i = 0; i < (int)as.size(); i++) {
for (int j = 0; j < (int)bs.size(); j++) {
for (int k = 0; k < len; k++) {
cs[i + j][k] += as[i][k] * bs[j][k];
}
}
}
for (auto &v : cs) v.intt();
fps c(a.size() + b.size() - 1);
for (int i = 0; i < (int)cs.size(); i++) {
int offset = len / 2 * i;
int je = min<int>(len, c.size() - offset);
for (int j = 0; j < je; j++) {
c[j + offset] += cs[i][j];
}
}
return c;
}
fps convolution998244353_large2(const fps &a, const fps &b) {
constexpr int len = 1 << 23;
constexpr int mask = len - 1;
constexpr mint pr = 3;
int c_size = a.size() + b.size() - 1;
if (a.empty() || b.empty()) return fps{};
if (c_size <= len) return a * b;
fps c, s(len), t(len);
for (int si = 0; si < c_size; si += len) {
fill(begin(s), end(s), mint{0});
fill(begin(t), end(t), mint{0});
mint base = pr.pow(si / len), coeff = 1;
for (int i = 0, j = 0; i < (int)a.size(); ++i, j = (j + 1) & mask) {
s[j] += a[i] * coeff;
coeff *= base;
}
coeff = 1;
for (int i = 0, j = 0; i < (int)b.size(); ++i, j = (j + 1) & mask) {
t[j] += b[i] * coeff;
coeff *= base;
}
s.ntt();
t.ntt();
for (int i = 0; i < len; i++) s[i] *= t[i];
s.intt();
copy(begin(s), end(s), back_inserter(c));
}
int N = c.size() / len;
vector mat(N, vector(N, mint{}));
for (int i = 0; i < N; i++) {
for (int j = 0; j < N; j++) {
mat[i][j] = pr.pow(1LL * len * i * j);
}
}
auto imat = inverse_matrix(mat);
for (int l = 0; l < len; l++) {
vector<mint> v(N), w(N);
for (int i = 0; i < N; i++) v[i] = c[i * len + l];
for (int i = 0; i < N; i++) {
for (int j = 0; j < N; j++) {
w[i] += imat[i][j] * v[j];
}
}
for (int i = 0; i < N; i++) c[i * len + l] = w[i];
}
c.resize(c_size);
return c;
}
void verify() {
int mx = 1 << 25;
int amax = 998244353;
while (true) {
int N = randint(1, mx);
int M = randint(1, mx);
fps a(N), b(M);
each(x, a) x = randint(0, amax);
each(x, b) x = randint(0, amax);
Timer timer;
timer.reset();
auto f1 = convolution998244353_large(a, b);
out("old :", timer.elapsed());
cout.flush();
timer.reset();
auto f2 = convolution998244353_large2(a, b);
out("new :", timer.elapsed());
cout.flush();
assert(sz(f1) == sz(f2));
rep(i, sz(f1)) {
if (f1[i] != f2[i]) {
out(i, "th element differ.");
cout.flush();
exit(1);
}
}
}
}
*/
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(r * mod == 1, "invalid, r * mod != 1");
static_assert(mod < (1 << 30), "invalid, mod >= 2 ^ 30");
static_assert((mod & 1) == 1, "invalid, mod % 2 == 0");
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 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 { return pow(mod - 2); }
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; }
};
template <typename T>
struct Binomial {
vector<T> f, g, h;
Binomial(int MAX = 0) : f(1, T(1)), g(1, T(1)), h(1, T(1)) {
while (MAX >= (int)f.size()) extend();
}
void extend() {
int n = f.size();
int m = n * 2;
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);
}
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;
// Prime Sieve {2, 3, 5, 7, 11, 13, 17, ...}
vector<int> prime_enumerate(int N) {
vector<bool> sieve(N / 3 + 1, 1);
for (int p = 5, d = 4, i = 1, sqn = sqrt(N); p <= sqn; p += d = 6 - d, i++) {
if (!sieve[i]) continue;
for (int q = p * p / 3, r = d * p / 3 + (d * p % 3 == 2), s = 2 * p,
qe = sieve.size();
q < qe; q += r = s - r)
sieve[q] = 0;
}
vector<int> ret{2, 3};
for (int p = 5, d = 4, i = 1; p <= N; p += d = 6 - d, i++)
if (sieve[i]) ret.push_back(p);
while (!ret.empty() && ret.back() > N) ret.pop_back();
return ret;
}
struct divisor_transform {
template <typename T>
static void zeta_transform(vector<T> &a) {
int N = a.size() - 1;
auto sieve = prime_enumerate(N);
for (auto &p : sieve)
for (int k = 1; k * p <= N; ++k) a[k * p] += a[k];
}
template <typename T>
static void mobius_transform(T &a) {
int N = a.size() - 1;
auto sieve = prime_enumerate(N);
for (auto &p : sieve)
for (int k = N / p; k > 0; --k) a[k * p] -= a[k];
}
template <typename T>
static void zeta_transform(map<long long, T> &a) {
for (auto p = rbegin(a); p != rend(a); p++)
for (auto &x : a) {
if (p->first == x.first) break;
if (p->first % x.first == 0) p->second += x.second;
}
}
template <typename T>
static void mobius_transform(map<long long, T> &a) {
for (auto &x : a)
for (auto p = rbegin(a); p != rend(a); p++) {
if (x.first == p->first) break;
if (p->first % x.first == 0) p->second -= x.second;
}
}
};
struct multiple_transform {
template <typename T>
static void zeta_transform(vector<T> &a) {
int N = a.size() - 1;
auto sieve = prime_enumerate(N);
for (auto &p : sieve)
for (int k = N / p; k > 0; --k) a[k] += a[k * p];
}
template <typename T>
static void mobius_transform(vector<T> &a) {
int N = a.size() - 1;
auto sieve = prime_enumerate(N);
for (auto &p : sieve)
for (int k = 1; k * p <= N; ++k) a[k] -= a[k * p];
}
template <typename T>
static void zeta_transform(map<long long, T> &a) {
for (auto &x : a)
for (auto p = rbegin(a); p->first != x.first; p++)
if (p->first % x.first == 0) x.second += p->second;
}
template <typename T>
static void mobius_transform(map<long long, T> &a) {
for (auto p1 = rbegin(a); p1 != rend(a); p1++)
for (auto p2 = rbegin(a); p2 != p1; p2++)
if (p2->first % p1->first == 0) p1->second -= p2->second;
}
};
/**
* @brief 倍数変換・約数変換
* @docs docs/multiplicative-function/divisor-multiple-transform.md
*/
namespace inner {
using i32 = int32_t;
using u32 = uint32_t;
using i64 = int64_t;
using u64 = uint64_t;
template <typename T>
T gcd(T a, T b) {
while (b) swap(a %= b, b);
return a;
}
template <typename T>
T inv(T a, T p) {
T b = p, x = 1, y = 0;
while (a) {
T q = b / a;
swap(a, b %= a);
swap(x, y -= q * x);
}
assert(b == 1);
return y < 0 ? y + p : y;
}
template <typename T, typename U>
T modpow(T a, U n, T p) {
T ret = 1 % p;
for (; n; n >>= 1, a = U(a) * a % p)
if (n & 1) ret = U(ret) * a % p;
return ret;
}
} // namespace inner
namespace my_rand {
// [0, 2^64 - 1)
uint64_t rng() {
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;
}
// [l, r)
int64_t randint(int64_t l, int64_t r) {
assert(l < r);
return l + rng() % (r - l);
}
// choose n numbers from [l, r) without overlapping
vector<int64_t> randset(int64_t l, int64_t r, int64_t n) {
assert(l <= r && n <= r - l);
unordered_set<int64_t> s;
for (int64_t i = n; i; --i) {
int64_t m = randint(l, r + 1 - i);
if (s.find(m) != s.end()) m = r - i;
s.insert(m);
}
vector<int64_t> ret;
for (auto& x : s) ret.push_back(x);
return ret;
}
// [0.0, 1.0)
double rnd() {
union raw_cast {
double t;
uint64_t u;
};
constexpr uint64_t p = uint64_t(1023 - 64) << 52;
return rng() * ((raw_cast*)(&p))->t;
}
template <typename T>
void randshf(vector<T>& v) {
int n = v.size();
for (int loop = 0; loop < 2; loop++)
for (int i = 0; i < n; i++) swap(v[i], v[randint(0, n)]);
}
} // namespace my_rand
using my_rand::randint;
using my_rand::randset;
using my_rand::randshf;
using my_rand::rnd;
using my_rand::rng;
struct ArbitraryLazyMontgomeryModInt {
using mint = ArbitraryLazyMontgomeryModInt;
using i32 = int32_t;
using u32 = uint32_t;
using u64 = uint64_t;
static u32 mod;
static u32 r;
static u32 n2;
static u32 get_r() {
u32 ret = mod;
for (i32 i = 0; i < 4; ++i) ret *= 2 - mod * ret;
return ret;
}
static void set_mod(u32 m) {
assert(m < (1 << 30));
assert((m & 1) == 1);
mod = m;
n2 = -u64(m) % m;
r = get_r();
assert(r * mod == 1);
}
u32 a;
ArbitraryLazyMontgomeryModInt() : a(0) {}
ArbitraryLazyMontgomeryModInt(const int64_t &b)
: a(reduce(u64(b % mod + mod) * n2)){};
static u32 reduce(const u64 &b) {
return (b + u64(u32(b) * u32(-r)) * mod) >> 32;
}
mint &operator+=(const mint &b) {
if (i32(a += b.a - 2 * mod) < 0) a += 2 * mod;
return *this;
}
mint &operator-=(const mint &b) {
if (i32(a -= b.a) < 0) a += 2 * mod;
return *this;
}
mint &operator*=(const mint &b) {
a = reduce(u64(a) * b.a);
return *this;
}
mint &operator/=(const mint &b) {
*this *= b.inverse();
return *this;
}
mint operator+(const mint &b) const { return mint(*this) += b; }
mint operator-(const mint &b) const { return mint(*this) -= b; }
mint operator*(const mint &b) const { return mint(*this) *= b; }
mint operator/(const mint &b) const { return mint(*this) /= b; }
bool operator==(const mint &b) const {
return (a >= mod ? a - mod : a) == (b.a >= mod ? b.a - mod : b.a);
}
bool operator!=(const mint &b) const {
return (a >= mod ? a - mod : a) != (b.a >= mod ? b.a - mod : b.a);
}
mint operator-() const { return mint() - mint(*this); }
mint pow(u64 n) const {
mint ret(1), mul(*this);
while (n > 0) {
if (n & 1) ret *= mul;
mul *= mul;
n >>= 1;
}
return ret;
}
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 = ArbitraryLazyMontgomeryModInt(t);
return (is);
}
mint inverse() const { return pow(mod - 2); }
u32 get() const {
u32 ret = reduce(a);
return ret >= mod ? ret - mod : ret;
}
static u32 get_mod() { return mod; }
};
typename ArbitraryLazyMontgomeryModInt::u32 ArbitraryLazyMontgomeryModInt::mod;
typename ArbitraryLazyMontgomeryModInt::u32 ArbitraryLazyMontgomeryModInt::r;
typename ArbitraryLazyMontgomeryModInt::u32 ArbitraryLazyMontgomeryModInt::n2;
struct montgomery64 {
using mint = montgomery64;
using i64 = int64_t;
using u64 = uint64_t;
using u128 = __uint128_t;
static u64 mod;
static u64 r;
static u64 n2;
static u64 get_r() {
u64 ret = mod;
for (i64 i = 0; i < 5; ++i) ret *= 2 - mod * ret;
return ret;
}
static void set_mod(u64 m) {
assert(m < (1LL << 62));
assert((m & 1) == 1);
mod = m;
n2 = -u128(m) % m;
r = get_r();
assert(r * mod == 1);
}
u64 a;
montgomery64() : a(0) {}
montgomery64(const int64_t &b) : a(reduce((u128(b) + mod) * n2)){};
static u64 reduce(const u128 &b) {
return (b + u128(u64(b) * u64(-r)) * mod) >> 64;
}
mint &operator+=(const mint &b) {
if (i64(a += b.a - 2 * mod) < 0) a += 2 * mod;
return *this;
}
mint &operator-=(const mint &b) {
if (i64(a -= b.a) < 0) a += 2 * mod;
return *this;
}
mint &operator*=(const mint &b) {
a = reduce(u128(a) * b.a);
return *this;
}
mint &operator/=(const mint &b) {
*this *= b.inverse();
return *this;
}
mint operator+(const mint &b) const { return mint(*this) += b; }
mint operator-(const mint &b) const { return mint(*this) -= b; }
mint operator*(const mint &b) const { return mint(*this) *= b; }
mint operator/(const mint &b) const { return mint(*this) /= b; }
bool operator==(const mint &b) const {
return (a >= mod ? a - mod : a) == (b.a >= mod ? b.a - mod : b.a);
}
bool operator!=(const mint &b) const {
return (a >= mod ? a - mod : a) != (b.a >= mod ? b.a - mod : b.a);
}
mint operator-() const { return mint() - mint(*this); }
mint pow(u128 n) const {
mint ret(1), mul(*this);
while (n > 0) {
if (n & 1) ret *= mul;
mul *= mul;
n >>= 1;
}
return ret;
}
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 = montgomery64(t);
return (is);
}
mint inverse() const { return pow(mod - 2); }
u64 get() const {
u64 ret = reduce(a);
return ret >= mod ? ret - mod : ret;
}
static u64 get_mod() { return mod; }
};
typename montgomery64::u64 montgomery64::mod, montgomery64::r, montgomery64::n2;
namespace fast_factorize {
using u64 = uint64_t;
template <typename mint>
bool miller_rabin(u64 n, vector<u64> as) {
if (mint::get_mod() != n) mint::set_mod(n);
u64 d = n - 1;
while (~d & 1) d >>= 1;
mint e{1}, rev{int64_t(n - 1)};
for (u64 a : as) {
if (n <= a) break;
u64 t = d;
mint y = mint(a).pow(t);
while (t != n - 1 && y != e && y != rev) {
y *= y;
t *= 2;
}
if (y != rev && t % 2 == 0) return false;
}
return true;
}
bool is_prime(u64 n) {
if (~n & 1) return n == 2;
if (n <= 1) return false;
if (n < (1LL << 30))
return miller_rabin<ArbitraryLazyMontgomeryModInt>(n, {2, 7, 61});
else
return miller_rabin<montgomery64>(
n, {2, 325, 9375, 28178, 450775, 9780504, 1795265022});
}
template <typename mint, typename T>
T pollard_rho(T n) {
if (~n & 1) return 2;
if (is_prime(n)) return n;
if (mint::get_mod() != n) mint::set_mod(n);
mint R, one = 1;
auto f = [&](mint x) { return x * x + R; };
auto rnd_ = [&]() { return rng() % (n - 2) + 2; };
while (1) {
mint x, y, ys, q = one;
R = rnd_(), y = rnd_();
T g = 1;
constexpr int m = 128;
for (int r = 1; g == 1; r <<= 1) {
x = y;
for (int i = 0; i < r; ++i) y = f(y);
for (int k = 0; g == 1 && k < r; k += m) {
ys = y;
for (int i = 0; i < m && i < r - k; ++i) q *= x - (y = f(y));
g = inner::gcd<T>(q.get(), n);
}
}
if (g == n) do
g = inner::gcd<T>((x - (ys = f(ys))).get(), n);
while (g == 1);
if (g != n) return g;
}
exit(1);
}
using i64 = long long;
vector<i64> inner_factorize(u64 n) {
if (n <= 1) return {};
u64 p;
if (n <= (1LL << 30))
p = pollard_rho<ArbitraryLazyMontgomeryModInt, uint32_t>(n);
else
p = pollard_rho<montgomery64, uint64_t>(n);
if (p == n) return {i64(p)};
auto l = inner_factorize(p);
auto r = inner_factorize(n / p);
copy(begin(r), end(r), back_inserter(l));
return l;
}
vector<i64> factorize(u64 n) {
auto ret = inner_factorize(n);
sort(begin(ret), end(ret));
return ret;
}
map<i64, i64> factor_count(u64 n) {
map<i64, i64> mp;
for (auto &x : factorize(n)) mp[x]++;
return mp;
}
vector<i64> divisors(u64 n) {
if (n == 0) return {};
vector<pair<i64, i64>> v;
for (auto &p : factorize(n)) {
if (v.empty() || v.back().first != p) {
v.emplace_back(p, 1);
} else {
v.back().second++;
}
}
vector<i64> ret;
auto f = [&](auto rc, int i, i64 x) -> void {
if (i == (int)v.size()) {
ret.push_back(x);
return;
}
for (int j = v[i].second;; --j) {
rc(rc, i + 1, x);
if (j == 0) break;
x *= v[i].first;
}
};
f(f, 0, 1);
sort(begin(ret), end(ret));
return ret;
}
} // namespace fast_factorize
using fast_factorize::divisors;
using fast_factorize::factor_count;
using fast_factorize::factorize;
using fast_factorize::is_prime;
/**
* @brief 高速素因数分解(Miller Rabin/Pollard's Rho)
* @docs docs/prime/fast-factorize.md
*/
void q() {
inl(n, c);
auto ds = divisors(n);
map<ll, int> phi;
each(d, ds) phi[d] = d;
divisor_transform::mobius_transform(phi);
trc(phi);
mint ans = 0;
// 回転のみ
// sum_{1<=i<=n} C^(gcd(n,i)*2)
// = sum_{d in n} C^phi(m/d)*2 // d 個置きに一致するのが phi(m/d)個
each(d,ds) ans += mint{c}.pow(d * 2) * phi[n/d];
trc(ans);
// 反転 回転
ans += mint{c}.pow(n) * n;
/*
each(d,ds) {
// 反転して d 個おき どうなりますか？
ans += mint{c}.pow(n);
}
*/
trc(ans);
ans/=2*n;
out(ans);
}
void Nyaan::solve() {
ini(T);
rep(i, T) q();
}