結果
問題 | No.1299 Random Array Score |
ユーザー |
![]() |
提出日時 | 2020-11-27 21:34:53 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 27 ms / 2,000 ms |
コード長 | 4,286 bytes |
コンパイル時間 | 1,367 ms |
コンパイル使用メモリ | 131,748 KB |
最終ジャッジ日時 | 2025-01-16 06:40:01 |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 34 |
ソースコード
#line 1 "main.cpp"#include <algorithm>#include <array>#include <bitset>#include <cassert>#include <cctype>#include <chrono>#include <cmath>#include <complex>#include <cstdint>#include <cstdlib>#include <deque>#include <functional>#include <iomanip>#include <iostream>#include <limits>#include <list>#include <map>#include <memory>#include <numeric>#include <queue>#include <random>#include <set>#include <stack>#include <string>#include <type_traits>#include <unordered_map>#include <utility>#include <vector>/* template start */using i64 = std::int_fast64_t;using u64 = std::uint_fast64_t;i64 operator"" _i64(unsigned long long num){return i64(num);}u64 operator"" _u64(unsigned long long num){return u64(num);}#define rep(i, a, b) for (i64 i = (a); (i) < (b); (i)++)#define all(i) i.begin(), i.end()#ifdef LOCAL#define debug(...) \std::cerr << "LINE: " << __LINE__ << " [" << #__VA_ARGS__ << "]:", \debug_out(__VA_ARGS__)#else#define debug(...)#endifvoid debug_out() { std::cerr << std::endl; }template <typename Head, typename... Tail>void debug_out(Head h, Tail... t) {std::cerr << " " << h;if (sizeof...(t) > 0) std::cout << " :";debug_out(t...);}template <typename T1, typename T2>std::ostream& operator<<(std::ostream& os, std::pair<T1, T2> pa) {return os << pa.first << " " << pa.second;}template <typename T>std::ostream& operator<<(std::ostream& os, std::vector<T> vec) {for (std::size_t i = 0; i < vec.size(); i++)os << vec[i] << (i + 1 == vec.size() ? "" : " ");return os;}template <typename T1, typename T2>inline bool chmax(T1& a, T2 b) {return a < b && (a = b, true);}template <typename T1, typename T2>inline bool chmin(T1& a, T2 b) {return a > b && (a = b, true);}template <typename Num>constexpr Num mypow(Num a, u64 b, Num id = 1) {if (b == 0) return id;Num x = id;while (b > 0) {if (b & 1) x *= a;a *= a;b >>= 1;}return x;}/* template end */#line 2 "/home/imperi/cp-library/lib/utility/modint.hpp"/*author:noshi91reference:https://noshi91.hatenablog.com/entry/2019/03/31/174006https://github.com/noshi91/Library/blob/master/other/modint.cpp1つめのmodintにoperator==,!=を追加したものですthx @noshi91!!*/#line 14 "/home/imperi/cp-library/lib/utility/modint.hpp"template <std::uint_fast64_t Modulus>class modint {using u64 = std::uint_fast64_t;public:u64 a;constexpr modint(const u64 x = 0) noexcept : a(x % Modulus) {}constexpr u64 &value() noexcept { return a; }constexpr const u64 &value() const noexcept { return a; }constexpr bool operator==(const modint rhs) const noexcept {return a == rhs.a;}constexpr bool operator!=(const modint rhs) const noexcept {return !(*this == rhs);}constexpr modint operator+(const modint rhs) const noexcept {return modint(*this) += rhs;}constexpr modint operator-(const modint rhs) const noexcept {return modint(*this) -= rhs;}constexpr modint operator*(const modint rhs) const noexcept {return modint(*this) *= rhs;}constexpr modint operator/(const modint rhs) const noexcept {return modint(*this) /= rhs;}constexpr modint &operator+=(const modint rhs) noexcept {a += rhs.a;if (a >= Modulus) {a -= Modulus;}return *this;}constexpr modint &operator-=(const modint rhs) noexcept {if (a < rhs.a) {a += Modulus;}a -= rhs.a;return *this;}constexpr modint &operator*=(const modint rhs) noexcept {a = a * rhs.a % Modulus;return *this;}constexpr modint &operator/=(modint rhs) noexcept {u64 exp = Modulus - 2;while (exp) {if (exp % 2) {*this *= rhs;}rhs *= rhs;exp /= 2;}return *this;}};#line 100 "main.cpp"constexpr u64 MOD = 998244353;using mint = modint<MOD>;int main() {std::cin.tie(nullptr);std::ios::sync_with_stdio(false);i64 n,k;std::cin>>n>>k;std::vector<i64> a(n);for(auto&& e:a)std::cin>>e;mint ans = 0;for(const auto& e:a)ans += e;ans *= mypow(mint(2),k);std::cout<<ans.value()<<"\n";return 0;}