結果

問題 No.1299 Random Array Score
ユーザー hedwig100hedwig100
提出日時 2020-11-27 21:35:06
言語 C++14
(gcc 13.2.0 + boost 1.83.0)
結果
AC  
実行時間 28 ms / 2,000 ms
コード長 3,167 bytes
コンパイル時間 1,585 ms
コンパイル使用メモリ 166,916 KB
実行使用メモリ 4,760 KB
最終ジャッジ日時 2023-10-01 05:00:27
合計ジャッジ時間 3,663 ms
ジャッジサーバーID
(参考情報)
judge11 / judge13
このコードへのチャレンジ(β)

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
4,376 KB
testcase_01 AC 2 ms
4,376 KB
testcase_02 AC 2 ms
4,376 KB
testcase_03 AC 27 ms
4,696 KB
testcase_04 AC 26 ms
4,552 KB
testcase_05 AC 21 ms
4,376 KB
testcase_06 AC 19 ms
4,380 KB
testcase_07 AC 19 ms
4,380 KB
testcase_08 AC 25 ms
4,624 KB
testcase_09 AC 3 ms
4,376 KB
testcase_10 AC 11 ms
4,376 KB
testcase_11 AC 4 ms
4,380 KB
testcase_12 AC 18 ms
4,380 KB
testcase_13 AC 25 ms
4,540 KB
testcase_14 AC 17 ms
4,380 KB
testcase_15 AC 18 ms
4,380 KB
testcase_16 AC 17 ms
4,380 KB
testcase_17 AC 5 ms
4,376 KB
testcase_18 AC 11 ms
4,376 KB
testcase_19 AC 14 ms
4,380 KB
testcase_20 AC 8 ms
4,376 KB
testcase_21 AC 2 ms
4,376 KB
testcase_22 AC 5 ms
4,380 KB
testcase_23 AC 18 ms
4,380 KB
testcase_24 AC 20 ms
4,380 KB
testcase_25 AC 18 ms
4,376 KB
testcase_26 AC 2 ms
4,376 KB
testcase_27 AC 6 ms
4,376 KB
testcase_28 AC 5 ms
4,380 KB
testcase_29 AC 7 ms
4,380 KB
testcase_30 AC 17 ms
4,380 KB
testcase_31 AC 7 ms
4,376 KB
testcase_32 AC 25 ms
4,676 KB
testcase_33 AC 28 ms
4,556 KB
testcase_34 AC 14 ms
4,760 KB
testcase_35 AC 28 ms
4,688 KB
testcase_36 AC 14 ms
4,668 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL_
void debug_out() {cerr << endl;}
template<typename Head,typename... Tail> void debug_out(Head H,Tail... T){cerr << ' ' << H; debug_out(T...);}
#define debug(...) cerr << 'L' << __LINE__ << " [" << #__VA_ARGS__ << "]:",debug_out(__VA_ARGS__)
#define dump(x) cerr << 'L' << __LINE__ << " " << #x << " = " << (x) << endl;
#else
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif
#define rep(i,n) for (int i = 0; i < (int)(n); i ++)
#define irep(i,n) for (int i = (int)(n) - 1;i >= 0;--i)
using ll = long long;
using PL = pair<ll,ll>;
using P = pair<int,int>;
constexpr int INF = 1000000000;
constexpr long long HINF = 100000'00000'00000;
constexpr long long MOD = 1000000007;// = 998244353;
constexpr double EPS = 1e-4;
constexpr double PI = 3.14159265358979;

#pragma region Macros
template<typename T1,typename T2> ostream &operator<<(ostream &os,const pair<T1,T2> &p) {
    os << '(' << p.first << ',' << p.second << ')'; return os;
}
template<typename T> ostream &operator<<(ostream &os,const vector<T> &v) {
    os << '[';
    for (auto &e:v) {os << e << ',';}
    os << ']'; return os;
}
// grid searh
const int dy[8] = {-1,0,1,0,-1,-1,1,1};
const int dx[8] = {0,1,0,-1,-1,1,-1,1};
bool IN(int y,int x,int H,int W) {return (0 <= y)&&(y < H)&&(0 <= x)&&(x < W);}
#pragma endregion


template<int Modulus> 
struct ModInt {
    long long x;
    ModInt(long long x = 0) :x((x%Modulus + Modulus)%Modulus) {}
    constexpr ModInt &operator+=(const ModInt a) {if ((x += a.x) >= Modulus) x -= Modulus; return *this;}
    constexpr ModInt &operator-=(const ModInt a) {if ((x += Modulus - a.x) >= Modulus) x -= Modulus; return *this;}
    constexpr ModInt &operator*=(const ModInt a) {(x *= a.x) %= Modulus; return *this;}
    constexpr ModInt &operator/=(const ModInt a) {return *this *= a.inverse();}

    constexpr ModInt operator+(const ModInt a) const {return ModInt(*this) += a.x;}
    constexpr ModInt operator-(const ModInt a) const {return ModInt(*this) -= a.x;}
    constexpr ModInt operator*(const ModInt a) const {return ModInt(*this) *= a.x;}
    constexpr ModInt operator/(const ModInt a) const {return ModInt(*this) /= a.x;}
    
    friend constexpr ostream& operator<<(ostream& os,const ModInt<Modulus>& a) {return os << a.x;}
    friend constexpr istream& operator>>(istream& is,ModInt<Modulus>& a) {return is >> a.x;}
    
    ModInt inverse() const {// x ^ (-1) 
        long long a = x,b = Modulus,p = 1,q = 0;
        while (b) {long long d = a/b; a -= d*b; swap(a,b); p -= d*q; swap(p,q);}
        return ModInt(p);
    }
    ModInt pow(long long N) {// x ^ N 
        ModInt a = 1;
        while (N) {
            if (N&1) a *= *this;
            *this *= *this;
            N >>= 1;
        }
        return a;
    }
};

using mint = ModInt<998244353>;

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(20);

    int N; cin >> N;
    ll K; cin >> K;
    vector<ll> A(N);
    rep(i,N) cin >> A[i];

    mint sum = 0;
    rep(i,N) sum += A[i];
    mint x = mint(2).pow(K);
    sum *= x;
    cout << sum << '\n';
    return 0;
}
0