結果
問題 |
No.3262 水色コーダーさん、その問題d問題ですよ?(1<=d<=N)
|
ユーザー |
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提出日時 | 2025-09-06 13:10:19 |
言語 | C# (.NET 8.0.404) |
結果 |
AC
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実行時間 | 59 ms / 2,000 ms |
コード長 | 23,733 bytes |
コンパイル時間 | 9,343 ms |
コンパイル使用メモリ | 170,092 KB |
実行使用メモリ | 192,340 KB |
最終ジャッジ日時 | 2025-09-06 13:12:21 |
合計ジャッジ時間 | 11,898 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 24 |
コンパイルメッセージ
復元対象のプロジェクトを決定しています... /home/judge/data/code/main.csproj を復元しました (155 ミリ秒)。 main -> /home/judge/data/code/bin/Release/net8.0/main.dll main -> /home/judge/data/code/bin/Release/net8.0/publish/
ソースコード
using System; using System.Collections; using System.Collections.Generic; using System.IO; using System.Linq; using static System.Math; using System.Text; using System.Threading; using System.Globalization; using System.Runtime.CompilerServices; using System.Runtime.InteropServices; using Library; namespace Program { using static Library.LIB_Static; public static class ProblemD { static bool SAIKI = false; static public int numberOfRandomCases = 0; static public void MakeTestCase(List<string> _input, List<string> _output, ref Func<string[], bool> _outputChecker) { } static public void Solve() { var N = NN; var LR = Range(0, N).Select(_ => new { idx = _, L = NN, R = NN }).ToArray(); var ary = Range(0, N).ToArray(); var ans = 0L; while (true) { LIB_Math.NextPermutation(ary); var minX = -1L; var ok = true; foreach (var idx in ary) { var l = LR[idx].L; var r = LR[idx].R; minX = Max(minX, l); if (minX > r) ok = false; } if (ok) ++ans; var exit = true; for (var i = 0; i < N; ++i) { if (i != ary[i]) exit = false; } if (exit) break; } Console.WriteLine(ans); } class Printer : StreamWriter { public override IFormatProvider FormatProvider { get { return CultureInfo.InvariantCulture; } } public Printer(Stream stream) : base(stream, new UTF8Encoding(false, true)) { base.AutoFlush = false; } public Printer(Stream stream, Encoding encoding) : base(stream, encoding) { base.AutoFlush = false; } } static LIB_FastIO fastio = new LIB_FastIODebug(); static string[] args; static public void Main(string[] args_t) { args = args_t; if (args_t.Length == 0) { fastio = new LIB_FastIO(); Console.SetOut(new Printer(Console.OpenStandardOutput())); } if (SAIKI) { var t = new Thread(Solve, 134217728); t.Start(); t.Join(); } else Solve(); Console.Out.Flush(); } static long NN => fastio.Long(); static double ND => fastio.Double(); static string NS => fastio.Scan(); static long[] NNList(long N) => Repeat(0, N).Select(_ => NN).ToArray(); static double[] NDList(long N) => Repeat(0, N).Select(_ => ND).ToArray(); static string[] NSList(long N) => Repeat(0, N).Select(_ => NS).ToArray(); } } namespace Library { class LIB_FastIO { [MethodImpl(MethodImplOptions.AggressiveInlining)] public LIB_FastIO() { str = Console.OpenStandardInput(); } readonly Stream str; readonly byte[] buf = new byte[2048]; int len, ptr; [MethodImpl(MethodImplOptions.AggressiveInlining)] byte read() { if (ptr >= len) { ptr = 0; if ((len = str.Read(buf, 0, 2048)) <= 0) { return 0; } } return buf[ptr++]; } [MethodImpl(MethodImplOptions.AggressiveInlining)] char Char() { byte b = 0; do b = read(); while (b < 33 || 126 < b); return (char)b; } [MethodImpl(MethodImplOptions.AggressiveInlining)] virtual public string Scan() { var sb = new StringBuilder(); for (var b = Char(); b >= 33 && b <= 126; b = (char)read()) sb.Append(b); return sb.ToString(); } [MethodImpl(MethodImplOptions.AggressiveInlining)] virtual public long Long() { long ret = 0; byte b = 0; var ng = false; do b = read(); while (b != '-' && (b < '0' || '9' < b)); if (b == '-') { ng = true; b = read(); } for (; true; b = read()) { if (b < '0' || '9' < b) return ng ? -ret : ret; else ret = (ret << 3) + (ret << 1) + b - '0'; } } [MethodImpl(MethodImplOptions.AggressiveInlining)] virtual public double Double() { return double.Parse(Scan(), CultureInfo.InvariantCulture); } } class LIB_FastIODebug : LIB_FastIO { Queue<string> param = new Queue<string>(); [MethodImpl(MethodImplOptions.AggressiveInlining)] string NextString() { if (param.Count == 0) foreach (var item in Console.ReadLine().Split(' ')) param.Enqueue(item); return param.Dequeue(); } [MethodImpl(MethodImplOptions.AggressiveInlining)] public LIB_FastIODebug() { } [MethodImpl(MethodImplOptions.AggressiveInlining)] public override string Scan() => NextString(); [MethodImpl(MethodImplOptions.AggressiveInlining)] public override long Long() => long.Parse(NextString()); [MethodImpl(MethodImplOptions.AggressiveInlining)] public override double Double() => double.Parse(NextString()); } class LIB_BarrettReduction { ulong MOD; ulong mh; ulong ml; const ulong ALL1_32 = (ulong)~0U; [MethodImpl(MethodImplOptions.AggressiveInlining)] public LIB_BarrettReduction(ulong mod) { MOD = mod; var m = ~0UL / MOD; unchecked { if (m * MOD + MOD == 0) ++m; } mh = m >> 32; ml = m & ALL1_32; } [MethodImpl(MethodImplOptions.AggressiveInlining)] public ulong Reduce(ulong x) { var z = (x & ALL1_32) * ml; z = (x & ALL1_32) * mh + (x >> 32) * ml + (z >> 32); z = (x >> 32) * mh + (z >> 32); x -= z * MOD; return x < MOD ? x : x - MOD; } } class LIB_MillerRabin { static readonly ulong[] a1 = new ulong[] { 2, 7, 61 }; static readonly ulong[] a21 = new ulong[] { 2, 325, 9375, 28178, 450775, 9780504 }; static readonly ulong[] a22 = new ulong[] { 2, 325, 9375, 28178, 450775, 9780504, 1795265022 }; static readonly byte[] smallPrimes = new byte[] { 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251 }; static public bool IsPrime(ulong N) { if (N < 66049) { var n = (int)N; if (n < 2) return false; if ((n & 1) == 0) return n == 2; if (n == 3) return true; foreach (int p in smallPrimes) { if (p * p > n) break; if (n % p == 0) return false; } return true; } if ((N & 1) == 0) return false; if (1000000000 < N) return IsPrime64(N); var br = new LIB_BarrettReduction(N); var d = N - 1; var cnt = 0; while ((d & 1) == 0) { d >>= 1; ++cnt; } foreach (var item in a1) { var x = 1UL; var d2 = d; var num = item; while (d2 > 0) { if ((d2 & 1) == 1) x = br.Reduce(x * num); d2 >>= 1; num = br.Reduce(num * num); } var i = 0; for (; i < cnt; ++i) { if (x == 1 || x == N - 1) break; x = br.Reduce(x * x); } if (i > 0 && x != N - 1) return false; } return true; } [MethodImpl(MethodImplOptions.AggressiveOptimization)] static bool IsPrime64(ulong N) { unchecked { var T128 = (ulong)(-(UInt128)N % N); var INV_MOD = N; INV_MOD *= 2 - N * INV_MOD; INV_MOD *= 2 - N * INV_MOD; INV_MOD *= 2 - N * INV_MOD; INV_MOD *= 2 - N * INV_MOD; INV_MOD *= 2 - N * INV_MOD; var NEG_INV = ~INV_MOD + 1; var t = (UInt128)T128; var ONE = (ulong)((t + (UInt128)((ulong)t * NEG_INV) * N) >> 64); t = ((UInt128)N - 1) * T128; var MINUS_ONE = (ulong)((t + (UInt128)((ulong)t * NEG_INV) * N) >> 64); if (ONE >= N) ONE -= N; if (MINUS_ONE >= N) MINUS_ONE -= N; var d = N - 1; var cnt = 0; while ((d & 1) == 0) { d >>= 1; ++cnt; } var a2 = N < 1795265022 ? a21 : a22; foreach (var item in a2) { var x = ONE; var d2 = d; t = (UInt128)item * T128; var num = (ulong)((t + (UInt128)((ulong)t * NEG_INV) * N) >> 64); while (d2 > 0) { if ((d2 & 1) == 1) { t = (UInt128)x * num; x = (ulong)((t + (UInt128)((ulong)t * NEG_INV) * N) >> 64); } d2 >>= 1; t = (UInt128)num * num; num = (ulong)((t + (UInt128)((ulong)t * NEG_INV) * N) >> 64); } var i = 0; var v = x >= N ? x - N : x; for (; i < cnt; ++i) { if (v == ONE || v == MINUS_ONE) break; t = (UInt128)x * x; x = (ulong)((t + (UInt128)((ulong)t * NEG_INV) * N) >> 64); v = x >= N ? x - N : x; } if (i > 0 && v != MINUS_ONE) return false; } return true; } } } class LIB_Math { [MethodImpl(MethodImplOptions.AggressiveInlining)] static public bool IsPrime(long x) => LIB_MillerRabin.IsPrime((ulong)x); [MethodImpl(MethodImplOptions.AggressiveInlining)] static public IEnumerable<long> Primes(long x) { if (x < 2) yield break; yield return 2; var halfx = x / 2; var table = new bool[halfx + 1]; var max = (long)(Math.Sqrt(x) / 2); for (long i = 1; i <= max; ++i) { if (table[i]) continue; var add = 2 * i + 1; yield return add; for (long j = 2 * i * (i + 1); j <= halfx; j += add) table[j] = true; } for (long i = max + 1; i <= halfx; ++i) if (!table[i] && 2 * i + 1 <= x) yield return 2 * i + 1; } [MethodImpl(MethodImplOptions.AggressiveInlining)] static public IEnumerable<long> Factors(long x) { if (x < 2) yield break; while (x % 2 == 0) { x /= 2; yield return 2; } var max = (long)Math.Sqrt(x); for (long i = 3; i <= max; i += 2) { while (x % i == 0) { x /= i; yield return i; } } if (x != 1) yield return x; } [MethodImpl(MethodImplOptions.AggressiveInlining)] static public IEnumerable<long> Divisor(long x) { if (x < 1) yield break; var max = (long)Math.Sqrt(x); for (long i = 1; i <= max; ++i) { if (x % i != 0) continue; yield return i; if (i != x / i) yield return x / i; } } [MethodImpl(MethodImplOptions.AggressiveInlining)] static public long GCD(long a, long b) { while (b > 0) { var tmp = b; b = a % b; a = tmp; } return a; } [MethodImpl(MethodImplOptions.AggressiveInlining)] static public long LCM(long a, long b) => a / GCD(a, b) * b; [MethodImpl(MethodImplOptions.AggressiveInlining)] static public long Pow(long x, long y) { long a = 1; while (y != 0) { if ((y & 1) == 1) a *= x; if (x < long.MaxValue / x) x *= x; y >>= 1; } return a; } [MethodImpl(MethodImplOptions.AggressiveInlining)] static public decimal Sqrt(decimal x) { decimal prev, cur = (decimal)Math.Sqrt((double)x); do { prev = cur; if (prev == 0) return 0; cur = (prev + x / prev) / 2; } while (cur != prev); return cur; } static List<long> _fact = new List<long>() { 1 }; [MethodImpl(MethodImplOptions.AggressiveInlining)] static void Build(long n) { if (n >= _fact.Count) for (int i = _fact.Count; i <= n; ++i) _fact.Add(_fact[i - 1] * i); } [MethodImpl(MethodImplOptions.AggressiveInlining)] static public long Comb(long n, long k) { Build(n); if (n == 0 && k == 0) return 1; if (n < k || n < 0) return 0; return _fact[(int)n] / _fact[(int)(n - k)] / _fact[(int)k]; } [MethodImpl(MethodImplOptions.AggressiveInlining)] static public long Perm(long n, long k) { Build(n); if (n == 0 && k == 0) return 1; if (n < k || n < 0) return 0; return _fact[(int)n] / _fact[(int)(n - k)]; } static public void PrevPermutation<T>(T[] ary) where T : IComparable<T> { var n = ary.Length; var i = n - 1; while (i - 1 >= 0 && ary[i - 1].CompareTo(ary[i]) <= 0) --i; if (i > 0) { var j = i; while (j + 1 < n && ary[i - 1].CompareTo(ary[j + 1]) > 0) ++j; var tmp = ary[i - 1]; ary[i - 1] = ary[j]; ary[j] = tmp; } var s = i; var t = n - 1; while (t - s > 0) { var tmp = ary[t]; ary[t] = ary[s]; ary[s] = tmp; ++s; --t; } } static public void NextPermutation<T>(T[] ary) where T : IComparable<T> { var n = ary.Length; var i = n - 1; while (i - 1 >= 0 && ary[i - 1].CompareTo(ary[i]) >= 0) --i; if (i > 0) { var j = i; while (j + 1 < n && ary[i - 1].CompareTo(ary[j + 1]) < 0) ++j; var tmp = ary[i - 1]; ary[i - 1] = ary[j]; ary[j] = tmp; } var s = i; var t = n - 1; while (t - s > 0) { var tmp = ary[t]; ary[t] = ary[s]; ary[s] = tmp; ++s; --t; } } [MethodImpl(MethodImplOptions.AggressiveInlining)] static public (long, long) InvGCD(long a, long b) { a = (a + b) % b; if (a == 0) return (b, 0); var s = b; var t = a; var m0 = 0L; var m1 = 1L; while (t > 0) { var u = s / t; s -= t * u; m0 -= m1 * u; var tmp = s; s = t; t = tmp; tmp = m0; m0 = m1; m1 = tmp; } if (m0 < 0) m0 += b / s; return (s, m0); } [MethodImpl(MethodImplOptions.AggressiveInlining)] static public (long, long) CRT(long[] r, long[] m) { var r0 = 0L; var m0 = 1L; for (var i = 0; i < m.Length; i++) { var m1 = m[i]; var r1 = (r[i] + m1) % m1; if (m0 < m1) { r0 ^= r1; r1 ^= r0; r0 ^= r1; m0 ^= m1; m1 ^= m0; m0 ^= m1; } if (m0 % m1 == 0) { if (r0 % m1 != r1) return (0, 0); continue; } var gim = InvGCD(m0, m1); var u1 = m1 / gim.Item1; if ((r1 - r0) % gim.Item1 != 0) return (0, 0); var x = (r1 - r0) / gim.Item1 % u1 * gim.Item2 % u1; r0 += x * m0; m0 *= u1; if (r0 < 0) r0 += m0; } return (r0, m0); } [MethodImpl(MethodImplOptions.AggressiveInlining)] static public long Phi(long n) { var ret = n; for (var i = 2L; i * i <= n; ++i) { if (n % i == 0) { ret -= ret / i; while (n % i == 0) n /= i; } } if (n > 1) ret -= ret / n; return ret; } [MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)] /// <summary> /// a*i + b /// i=0...n-1 /// 格子高さm /// </summary> static public long FloorSum(long n, long m, long a, long b) { unchecked { var ans = 0UL; var un = (ulong)n; var um = (ulong)m; var ua = (ulong)a; var ub = (ulong)b; if (a < 0) { var am = a % m; if (am < 0) am += m; var a2 = (ulong)am; ans -= un * (un - 1) / 2 * ((a2 + (ulong)(-a)) / um); ua = a2; } if (b < 0) { var bm = b % m; if (bm < 0) bm += m; var b2 = (ulong)bm; ans -= un * ((b2 + (ulong)(-b)) / um); ub = b2; } while (true) { if (ua >= um) { ans += (un - 1) * un / 2 * (ua / um); ua %= um; } if (ub >= um) { ans += un * (ub / um); ub %= um; } var ymax = ua * un + ub; if (ymax < um) return (long)ans; un = ymax / um; ub = ymax % um; um ^= ua; ua ^= um; um ^= ua; } } } static public long BabyStepGiantStep<T>(T init, T target, long step, Func<T, T> babyStep, Func<T, T> giantStep) where T : IEquatable<T> { // minimal check var chk = init; for (var i = 0; i < step; ++i) { if (chk.Equals(target)) return i; chk = babyStep(chk); } var dic = new Dictionary<T, long>(); chk = target; for (var i = 1; i <= step; ++i) { chk = babyStep(chk); dic[chk] = i; } var now = init; var fail = false; for (var i = 1; i <= step; ++i) { var next = giantStep(now); if (dic.ContainsKey(next)) { chk = now; for (var j = 0; j < step; ++j) { if (target.Equals(chk)) { return (i - 1) * step + j; } chk = babyStep(chk); } if (fail) return -1; fail = true; } now = next; } return -1; } } static partial class LIB_Static { public static uint xorshift { get { _xsi.MoveNext(); return _xsi.Current; } } public static IEnumerator<uint> _xsi = _xsc(); public static IEnumerator<uint> _xsc() { uint x = 123456789, y = 362436069, z = 521288629, w = 0; while (true) { var t = x ^ (x << 11); x = y; y = z; z = w; w = (w ^ (w >> 19)) ^ (t ^ (t >> 8)); yield return w; } } public static long Count<T>(this IEnumerable<T> x, Func<T, bool> pred) => Enumerable.Count(x, pred); public static IEnumerable<T> Repeat<T>(T v, long n) => Enumerable.Repeat<T>(v, (int)n); public static IEnumerable<int> Range(long s, long c) => Enumerable.Range((int)s, (int)c); public static IOrderedEnumerable<T> OrderByRand<T>(this IEnumerable<T> x) => Enumerable.OrderBy(x, _ => xorshift); public static IOrderedEnumerable<T> OrderBy<T>(this IEnumerable<T> x) => Enumerable.OrderBy(x.OrderByRand(), e => e); public static IOrderedEnumerable<T1> OrderBy<T1, T2>(this IEnumerable<T1> x, Func<T1, T2> selector) => Enumerable.OrderBy(x.OrderByRand(), selector); public static IOrderedEnumerable<T> OrderByDescending<T>(this IEnumerable<T> x) => Enumerable.OrderByDescending(x.OrderByRand(), e => e); public static IOrderedEnumerable<T1> OrderByDescending<T1, T2>(this IEnumerable<T1> x, Func<T1, T2> selector) => Enumerable.OrderByDescending(x.OrderByRand(), selector); public static IOrderedEnumerable<string> OrderBy(this IEnumerable<string> x) => x.OrderByRand().OrderBy(e => e, StringComparer.OrdinalIgnoreCase); public static IOrderedEnumerable<T> OrderBy<T>(this IEnumerable<T> x, Func<T, string> selector) => x.OrderByRand().OrderBy(selector, StringComparer.OrdinalIgnoreCase); public static IOrderedEnumerable<string> OrderByDescending(this IEnumerable<string> x) => x.OrderByRand().OrderByDescending(e => e, StringComparer.OrdinalIgnoreCase); public static IOrderedEnumerable<T> OrderByDescending<T>(this IEnumerable<T> x, Func<T, string> selector) => x.OrderByRand().OrderByDescending(selector, StringComparer.OrdinalIgnoreCase); public static string Join<T>(this IEnumerable<T> x, string separator = "") => string.Join(separator, x); public static bool Chmax<T>(this ref T lhs, T rhs) where T : struct, IComparable<T> { if (lhs.CompareTo(rhs) < 0) { lhs = rhs; return true; } return false; } public static bool Chmin<T>(this ref T lhs, T rhs) where T : struct, IComparable<T> { if (lhs.CompareTo(rhs) > 0) { lhs = rhs; return true; } return false; } public static void Fill<T>(this T[] array, T value) => array.AsSpan().Fill(value); public static void Fill<T>(this T[,] array, T value) => MemoryMarshal.CreateSpan(ref array[0, 0], array.Length).Fill(value); public static void Fill<T>(this T[,,] array, T value) => MemoryMarshal.CreateSpan(ref array[0, 0, 0], array.Length).Fill(value); public static void Fill<T>(this T[,,,] array, T value) => MemoryMarshal.CreateSpan(ref array[0, 0, 0, 0], array.Length).Fill(value); } }