結果
| 問題 |
No.619 CardShuffle
|
| コンテスト | |
| ユーザー |
 Pachicobue
|
| 提出日時 | 2019-05-01 21:56:08 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 53 ms / 3,000 ms |
| コード長 | 11,463 bytes |
| コンパイル時間 | 751 ms |
| コンパイル使用メモリ | 82,572 KB |
| 最終ジャッジ日時 | 2025-01-07 03:19:34 |
|
ジャッジサーバーID （参考情報） |
judge5 / judge2 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 35 |
ソースコード
#include <iostream>
#include <vector>
#include <cassert>
#include <algorithm>
#include <utility>
template <typename T>
constexpr T popCount(const T u)
{
#ifdef __has_builtin
return u == 0 ? T(0) : (T)__builtin_popcountll(u);
#else
unsigned long long v = static_cast<unsigned long long>(u);
return v = (v & 0x5555555555555555ULL) + (v >> 1 & 0x5555555555555555ULL), v = (v & 0x3333333333333333ULL) + (v >> 2 & 0x3333333333333333ULL), v = (v + (v >> 4)) & 0x0F0F0F0F0F0F0F0FULL, static_cast<T>(v * 0x0101010101010101ULL >> 56 & 0x7f);
#endif
}
template <typename T>
constexpr T log2p1(const T u)
{
#ifdef __has_builtin
return u == 0 ? T(0) : T(64 - __builtin_clzll(u));
#else
unsigned long long v = static_cast<unsigned long long>(u);
return v = static_cast<unsigned long long>(v), v |= (v >> 1), v |= (v >> 2), v |= (v >> 4), v |= (v >> 8), v |= (v >> 16), v |= (v >> 32), popCount(v);
#endif
}
template <typename T>
constexpr T clog(const T v) { return v == 0 ? T(0) : log2p1(v - 1); }
template <typename T>
constexpr T msbp1(const T v) { return log2p1(v); }
template <typename T>
constexpr T lsbp1(const T v)
{
#ifdef __has_builtin
return __builtin_ffsll(v);
#else
return v == 0 ? T(0) : popCount((v & (-v)) - T(1)) + T(1);
#endif
}
template <typename T>
constexpr bool ispow2(const T v) { return popCount(v) == 1; }
template <typename T>
constexpr T ceil2(const T v) { return v == 0 ? T(1) : T(1) << log2p1(v - 1); }
template <typename T>
constexpr T floor2(const T v) { return v == 0 ? T(0) : T(1) << (log2p1(v) - 1); }
//!===================================================================!//
//! .d88888b d888888P !//
//! 88. "' 88 !//
//! 'Y88888b. .d8888b. .d8888b. 88 88d888b. .d8888b. .d8888b. !//
//! '8b 88ooood8 88' '88 88 88' '88 88ooood8 88ooood8 !//
//! d8' .8P 88. ... 88. .88 88 88 88. ... 88. ... !//
//! Y88888P '88888P' '8888P88 dP dP '88888P' '88888P' !//
//! .88 !//
//! d8888P !//
//!===================================================================!//
template <typename ValMonoid>
class SegTree
{
public:
using T = typename ValMonoid::T;
SegTree(const std::size_t N, const T initial = ValMonoid::id()) : size(N), half(ceil2(size)), val(half << 1, ValMonoid::id())
{
if (initial != ValMonoid::id()) {
std::fill(val.begin() + half, val.end(), initial);
for (std::size_t i = half - 1; i >= 1; i--) { up(i); }
}
}
template <typename InIt>
SegTree(const InIt first, const InIt last) : size(std::distance(first, last)), half(ceil2(size)), val(half << 1, ValMonoid::id())
{
std::copy(first, last, val.begin() + half);
for (std::size_t i = half - 1; i >= 1; i--) { up(i); }
}
T get(const std::size_t a) const { return assert(a < size), val[a + half]; }
void set(std::size_t a, const T& v)
{
assert(a < size);
val[a += half] = v;
while (a >>= 1) { up(a); }
}
T fold(std::size_t L, std::size_t R) const
{
assert(L < R), assert(R <= size);
T accl = ValMonoid::id(), accr = ValMonoid::id();
for (L += half, R += half; L < R; L >>= 1, R >>= 1) {
if (L & 1) { accl = acc(accl, val[L++]); }
if (R & 1) { accr = acc(val[--R], accr); }
}
return acc(accl, accr);
}
friend std::ostream& operator<<(std::ostream& os, const SegTree& seg)
{
os << "[";
for (std::size_t i = seg.half; i < seg.half + seg.size; i++) { os << seg.val[i] << (i + 1 == seg.half + seg.size ? "" : ","); }
return (os << "]\n");
}
private:
void up(const std::size_t i) { val[i] = acc(val[i << 1], val[i << 1 | 1]); }
const std::size_t size, half;
std::vector<T> val;
const ValMonoid acc{};
};
template <typename X>
struct ArithmeticOps
{
struct T
{
T() : has_p(false), L{1}, M{0}, R{0} {}
T(const X& L, const X& M, const X& R) : has_p(true), L{L}, M{M}, R{R} {}
T(const bool b, const X& V) : has_p{b}, L{has_p ? X{1} : V}, M{0}, R{has_p ? V : X{0}} {}
T(const bool b, const X& L, const X& M, const X& R) : has_p{b}, L{L}, M{M}, R{R} {}
bool has_p;
X L, M, R;
friend std::ostream& operator<<(std::ostream& os, const T& t) { return t.has_p ? (os << "*" << t.L << "+" << t.M << "+" << t.R) : (os << "*" << t.L); }
};
T operator()(const T& a, const T& b) const { return a.has_p ? b.has_p ? T{a.L, a.M + a.R * b.L + b.M, b.R} : T{a.L, a.M, a.R * b.L} : b.has_p ? T{a.L * b.L, b.M, b.R} : T{false, a.L * b.L}; }
static T id() { return T{false, X{1}}; }
};
//!===============================================================!//
//! 88888888b dP .88888. a88888b. 888888ba !//
//! 88 88 d8' '88 d8' '88 88 '8b !//
//! a88aaaa dP. .dP d8888P 88 88 88 88 !//
//! 88 '8bd8' 88 88 YP88 88 88 88 !//
//! 88 .d88b. 88 Y8. .88 Y8. .88 88 .8P !//
//! 88888888P dP' 'dP dP '88888' Y88888P' 8888888P !//
//!===============================================================!//
template <typename T>
constexpr std::pair<T, T> extgcd(const T a, const T b)
{
if (b == 0) { return std::pair<T, T>{1, 0}; }
const auto p = extgcd(b, a % b);
return {p.second, p.first - p.second * (a / b)};
}
template <typename T>
constexpr T inverse(const T a, const T mod) { return (mod + extgcd((mod + a % mod) % mod, mod).first % mod) % mod; }
using uint = unsigned int;
using ll = long long;
using ull = unsigned long long;
//!========================================================!//
//! 8888ba.88ba dP dP dP !//
//! 88 '8b '8b 88 88 88 !//
//! 88 88 88 .d8888b. .d888b88 88 88d888b. d8888P !//
//! 88 88 88 88' '88 88' '88 88 88' '88 88 !//
//! 88 88 88 88. .88 88. .88 88 88 88 88 !//
//! dP dP dP '88888P' '88888P8 dP dP dP dP !//
//!========================================================!//
template <uint mod>
class ModInt
{
private:
uint v;
static uint norm(const uint& x) { return x < mod ? x : x - mod; }
static ModInt make(const uint& x)
{
ModInt m;
return m.v = x, m;
}
static ModInt power(ModInt x, ll n)
{
ModInt ans = 1;
for (; n; n >>= 1, x *= x) {
if (n & 1) { ans *= x; }
}
return ans;
}
static ModInt inv(const ModInt& x) { return ModInt{inverse((ll)x.v, (ll)mod)}; }
public:
ModInt() : v{0} {}
ModInt(const ll val) : v{norm(uint(val % (ll)mod + (ll)mod))} {}
ModInt(const ModInt<mod>& n) : v{n()} {}
explicit operator bool() const { return v != 0; }
ModInt<mod>& operator=(const ModInt<mod>& n) { return v = n(), (*this); }
ModInt<mod>& operator=(const ll val) { return v = norm(uint(val % (ll)mod + (ll)mod)), (*this); }
ModInt<mod> operator+() const { return *this; }
ModInt<mod> operator-() const { return make(norm(mod - v)); }
ModInt<mod> operator+(const ModInt<mod>& val) const { return make(norm(v + val())); }
ModInt<mod> operator-(const ModInt<mod>& val) const { return make(norm(v + mod - val())); }
ModInt<mod> operator*(const ModInt<mod>& val) const { return make((uint)((ll)v * val() % (ll)mod)); }
ModInt<mod> operator/(const ModInt<mod>& val) const { return *this * inv(val()); }
ModInt<mod>& operator+=(const ModInt<mod>& val) { return *this = *this + val; }
ModInt<mod>& operator-=(const ModInt<mod>& val) { return *this = *this - val; }
ModInt<mod>& operator*=(const ModInt<mod>& val) { return *this = *this * val; }
ModInt<mod>& operator/=(const ModInt<mod>& val) { return *this = *this / val; }
ModInt<mod> operator+(const ll val) const { return ModInt{v + val}; }
ModInt<mod> operator-(const ll val) const { return ModInt{v - val}; }
ModInt<mod> operator*(const ll val) const { return ModInt{(ll)v * (val % mod)}; }
ModInt<mod> operator/(const ll val) const { return ModInt{(ll)v * inv(val)}; }
template <typename I>
ModInt<mod> operator^(const I n) const { return power(v, n); }
ModInt<mod>& operator+=(const ll val) { return *this = *this + val; }
ModInt<mod>& operator-=(const ll val) { return *this = *this - val; }
ModInt<mod>& operator*=(const ll val) { return *this = *this * val; }
ModInt<mod>& operator/=(const ll val) { return *this = *this / val; }
template <typename I>
ModInt<mod>& operator^=(const I n) { return (*this) = ((*this) ^ n); }
bool operator==(const ModInt<mod>& val) const { return v == val.v; }
bool operator!=(const ModInt<mod>& val) const { return not(*this == val); }
bool operator==(const ll val) const { return v == norm(uint((ll)mod + val % (ll)mod)); }
bool operator!=(const ll val) const { return not(*this == val); }
uint operator()() const { return v; }
};
template <uint mod>
inline ModInt<mod> operator+(const ll val, const ModInt<mod>& n) { return n + val; }
template <uint mod>
inline ModInt<mod> operator-(const ll val, const ModInt<mod>& n) { return ModInt<mod>{val - (ll)n()}; }
template <uint mod>
inline ModInt<mod> operator*(const ll val, const ModInt<mod>& n) { return n * val; }
template <uint mod>
inline ModInt<mod> operator/(const ll val, const ModInt<mod>& n) { return ModInt<mod>(val) / n; }
template <uint mod>
inline bool operator==(const ll val, const ModInt<mod>& n) { return n == val; }
template <uint mod>
inline bool operator!=(const ll val, const ModInt<mod>& n) { return not(val == n); }
template <uint mod>
inline std::istream& operator>>(std::istream& is, ModInt<mod>& n)
{
uint v;
return is >> v, n = v, is;
}
template <uint mod>
std::ostream& operator<<(std::ostream& os, const ModInt<mod>& n) { return (os << n()); }
int main()
{
std::cin.tie(nullptr);
std::ios::sync_with_stdio(false);
constexpr uint MOD = 1000000007;
using mint = ModInt<MOD>;
std::size_t N;
std::cin >> N;
const std::size_t M = (N + 1) / 2;
std::vector<mint> A(M);
std::string S(M, '*');
for (std::size_t i = 0; i < N; i++) {
if (i % 2 == 0) {
std::cin >> A[i / 2];
} else {
std::cin >> S[i / 2 + 1];
}
}
using T = ArithmeticOps<mint>::T;
std::vector<T> V(M);
for (std::size_t i = 0; i < M; i++) { V[i] = T{S[i] == '+', A[i]}; }
SegTree<ArithmeticOps<mint>> seg(V.begin(), V.end());
std::size_t Q;
std::cin >> Q;
for (std::size_t q = 0; q < Q; q++) {
char t;
std::size_t x, y;
std::cin >> t >> x >> y;
if (t == '!') {
bool op = x % 2 == 0;
x /= 2, y /= 2;
if (op) {
std::swap(S[x], S[y]);
} else {
std::swap(A[x], A[y]);
}
seg.set(x, T{S[x] == '+', A[x]}), seg.set(y, T{S[y] == '+', A[y]});
} else {
x /= 2, y /= 2;
const auto ans = seg.fold(x, y + 1);
std::cout << (S[x] == '+' ? ans.M + ans.R : ans.L + ans.M + ans.R) << "\n";
}
}
return 0;
}