提出 #51017518

---

ソースコード 拡げる

namespace TUPC2023.C
{
    public class Program
    {
        public static TextReader? input = default;
        public static TextWriter? output = default;
        public static string TestCaseInput = @"
6
4 2 1 5 6 3

        ";
        public static string TestCaseOutput = @"
4096

        ";
        private const int MOD = 998244353;
        public static void Run()
        {
            var line1 = ReadLineInt();
            var N = line1[0];
            var Ps = ReadLineInt();
            long availableLines = (long)N * (N - 1) / 2;
            int max = 0;
            for (var i = 0; i < Ps.Length; i++)
            {
                var currentValue = Ps[i];
                if (max > currentValue)
                {
                    availableLines -= 1;
                }
                else
                {
                    max = currentValue;
                }
            }
            Print(PowMod(2, availableLines, MOD));
        }
        #region Utility
        private static U GetOrDefaultValue<T, U>(Dictionary<T, U> dict, T key, U defaultValue)
        {
            if (dict.TryGetValue(key, out var returnValue))
            {
                return returnValue;
            }
            else
            {
                return defaultValue;
            }
        }
        private static void AddOrSetValue<T, U>(Dictionary<T, U> dict, T key, U value)
        {
            if (!dict.TryAdd(key, value))
            {
                dict[key] = value;
            }
        }

        private struct Vector2
        {
            public int x;
            public int y;
            public override bool Equals(object? obj)
            {
                if (obj is Vector2 other)
                {
                    return other.x == this.x && other.y == this.y;
                }
                return false;
            }
            public override int GetHashCode()
            {
                return x ^ y;
            }
        }

        public static long PowMod(long a, long n, int mod)
        {
            // a^nを計算
            long ans = 1l;
            long tmp = a;

            // わかりやすくfor文の中ですべて処理
            for (; ; )
            {
                // すべての桁を見終わったら終了
                if (n < 1l)
                {
                    break;
                }

                // 最下位bitが1かどうかの判定
                if (n % 2l == 1l)
                {
                    ans = (tmp * ans % mod);
                }

                // tmpの更新
                tmp = (tmp * tmp % mod);

                // nのbitを一つずらす
                n = n >> 1;
            }
            return ans;
        }
        #endregion

        #region AtCoder Library
        private static string[] ReadLine()
        {
            var line = input?.ReadLine();
            return line?.Split(" ") ?? Array.Empty<string>();
        }
        private static byte[] ReadLineByte()
        {
            return ReadLine().Select(byte.Parse).ToArray();
        }
        private static int[] ReadLineInt()
        {
            return ReadLine().Select(int.Parse).ToArray();
        }
        private static long[] ReadLineLong()
        {
            return ReadLine().Select(long.Parse).ToArray();
        }
        private static void Print(object data)
        {
            output?.WriteLine(data.ToString());
            output?.Flush();
        }
        private static int ArraySearch<T>(T needle, T[] heystack)
        {
            if (needle == null) return -1;
            for (int i = 0; i < heystack.Length; i++)
            {
                if (needle.Equals(heystack[i]))
                {
                    return i;
                }
            }
            return -1;
        }
#if !TEST
        static void Main(string[] args)
        {
            input = Console.In;
            output = Console.Out;
            Run();
        }
#endif
        #endregion
    }
}

提出情報

コンパイルエラー

/judge/Main.cs(79,25): warning CS0078: The 'l' suffix is easily confused with the digit '1' -- use 'L' for clarity [/judge/Main.csproj]
/judge/Main.cs(86,26): warning CS0078: The 'l' suffix is easily confused with the digit '1' -- use 'L' for clarity [/judge/Main.csproj]
/judge/Main.cs(92,26): warning CS0078: The 'l' suffix is easily confused with the digit '1' -- use 'L' for clarity [/judge/Main.csproj]
/judge/Main.cs(92,32): warning CS0078: The 'l' suffix is easily confused with the digit '1' -- use 'L' for clarity [/judge/Main.csproj]
/judge/Main.cs(60,24): warning CS0649: Field 'Program.Vector2.x' is never assigned to, and will always have its default value 0 [/judge/Main.csproj]
/judge/Main.cs(61,24): warning CS0649: Field 'Program.Vector2.y' is never assigned to, and will always have its default value 0 [/judge/Main.csproj]

ジャッジ結果