結果

問題 No.1299 Random Array Score
ユーザー keymoonkeymoon
提出日時 2020-11-27 21:23:41
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 143 ms / 2,000 ms
コード長 2,937 bytes
コンパイル時間 1,008 ms
コンパイル使用メモリ 112,056 KB
実行使用メモリ 52,244 KB
最終ジャッジ日時 2024-07-23 21:54:08
合計ジャッジ時間 5,553 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
このコードへのチャレンジ
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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 31 ms
27,120 KB
testcase_01 AC 30 ms
22,960 KB
testcase_02 AC 31 ms
25,004 KB
testcase_03 AC 127 ms
46,732 KB
testcase_04 AC 125 ms
44,552 KB
testcase_05 AC 108 ms
44,484 KB
testcase_06 AC 101 ms
43,328 KB
testcase_07 AC 103 ms
43,796 KB
testcase_08 AC 124 ms
46,564 KB
testcase_09 AC 37 ms
26,128 KB
testcase_10 AC 68 ms
31,568 KB
testcase_11 AC 45 ms
27,012 KB
testcase_12 AC 97 ms
43,012 KB
testcase_13 AC 123 ms
46,164 KB
testcase_14 AC 99 ms
41,012 KB
testcase_15 AC 99 ms
43,260 KB
testcase_16 AC 100 ms
41,552 KB
testcase_17 AC 46 ms
26,952 KB
testcase_18 AC 71 ms
32,136 KB
testcase_19 AC 77 ms
37,008 KB
testcase_20 AC 59 ms
32,172 KB
testcase_21 AC 38 ms
25,796 KB
testcase_22 AC 48 ms
26,824 KB
testcase_23 AC 99 ms
41,176 KB
testcase_24 AC 106 ms
44,060 KB
testcase_25 AC 99 ms
43,176 KB
testcase_26 AC 36 ms
27,840 KB
testcase_27 AC 50 ms
27,496 KB
testcase_28 AC 47 ms
27,208 KB
testcase_29 AC 53 ms
28,464 KB
testcase_30 AC 95 ms
40,828 KB
testcase_31 AC 54 ms
26,288 KB
testcase_32 AC 123 ms
44,176 KB
testcase_33 AC 142 ms
50,452 KB
testcase_34 AC 92 ms
40,764 KB
testcase_35 AC 143 ms
52,244 KB
testcase_36 AC 94 ms
40,648 KB
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コンパイルメッセージ
Microsoft (R) Visual C# Compiler version 3.9.0-6.21124.20 (db94f4cc)
Copyright (C) Microsoft Corporation. All rights reserved.

ソースコード

diff # 

using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Numerics;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using static System.Math;

public static class P
{
    public static void Main()
    {
        var nk = Console.ReadLine().Split().Select(long.Parse).ToArray();
        var k = nk[1];
        var a = Console.ReadLine().Split().Select(int.Parse).ToArray();
        var sum = a.Aggregate(new ModInt(0), (x, y) => x + y);
        Console.WriteLine(sum * Power(2, k));
    }

    static ModInt Power(ModInt n, long m)
    {
        ModInt pow = n;
        ModInt res = 1;
        while (m > 0)
        {
            if ((m & 1) == 1) res *= pow;
            pow *= pow;
            m >>= 1;
        }
        return res;
    }
}


struct ModInt
{
    public const int Mod = 998244353;
    const long POSITIVIZER = ((long)Mod) << 31;
    long Data;
    public ModInt(long data) { if ((Data = data % Mod) < 0) Data += Mod; }
    public static implicit operator long(ModInt modInt) => modInt.Data;
    public static implicit operator ModInt(long val) => new ModInt(val);
    public static ModInt operator +(ModInt a, int b) => new ModInt() { Data = (a.Data + b + POSITIVIZER) % Mod };
    public static ModInt operator +(ModInt a, long b) => new ModInt(a.Data + b);
    public static ModInt operator +(ModInt a, ModInt b) { long res = a.Data + b.Data; return new ModInt() { Data = res >= Mod ? res - Mod : res }; }
    public static ModInt operator -(ModInt a, int b) => new ModInt() { Data = (a.Data - b + POSITIVIZER) % Mod };
    public static ModInt operator -(ModInt a, long b) => new ModInt(a.Data - b);
    public static ModInt operator -(ModInt a, ModInt b) { long res = a.Data - b.Data; return new ModInt() { Data = res < 0 ? res + Mod : res }; }
    public static ModInt operator *(ModInt a, int b) => new ModInt(a.Data * b);
    public static ModInt operator *(ModInt a, long b) => a * new ModInt(b);
    public static ModInt operator *(ModInt a, ModInt b) => new ModInt() { Data = a.Data * b.Data % Mod };
    public static ModInt operator /(ModInt a, ModInt b) => new ModInt() { Data = a.Data * GetInverse(b) % Mod };
    public static bool operator ==(ModInt a, ModInt b) => a.Data == b.Data;
    public static bool operator !=(ModInt a, ModInt b) => a.Data != b.Data;
    public override string ToString() => Data.ToString();
    public override bool Equals(object obj) => (ModInt)obj == this;
    public override int GetHashCode() => (int)Data;
    static long GetInverse(long a)
    {
        long div, p = Mod, x1 = 1, y1 = 0, x2 = 0, y2 = 1;
        while (true)
        {
            if (p == 1) return x2 + Mod; div = a / p; x1 -= x2 * div; y1 -= y2 * div; a %= p;
            if (a == 1) return x1 + Mod; div = p / a; x2 -= x1 * div; y2 -= y1 * div; p %= a;
        }
    }
}
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