結果
問題 | No.3022 一元一次式 mod 1000000000 |
ユーザー |
|
提出日時 | 2025-02-15 00:19:27 |
言語 | C# (.NET 8.0.404) |
結果 |
AC
|
実行時間 | 236 ms / 2,000 ms |
コード長 | 2,345 bytes |
コンパイル時間 | 19,838 ms |
コンパイル使用メモリ | 173,132 KB |
実行使用メモリ | 225,504 KB |
最終ジャッジ日時 | 2025-02-17 12:58:22 |
合計ジャッジ時間 | 11,114 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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ファイルパターン | 結果 |
---|---|
other | AC * 21 |
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 (105 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
#nullable enableusing System.Numerics;const int Mod = 1000000000;object? Solve(){var t = Int();var ans = t.Repeat(() => -(Int128)1);for (var i = 0; i < t; i++){var n = long.Parse(String());var m = long.Parse(String());var (d, x, y) = Extensions.ExtendedGCD(Mod, -n);if (d < 0) (d, y) = (-d, -y);if (m % d != 0) continue;var mod = Mod / d;var ins = (Int128)y * (m / d) % mod;if (ins <= 0) ins += mod;ans[i] = ins;}Out(ans);return null;}#regionAtCoderIO _io_;var _backend_ = new StandardIOBackend();_io_ = new(){ Backend = _backend_ };Out(Solve());_backend_.Flush();string String() => _io_.Next();int Int() => int.Parse(String());void Out(object? x, string? sep = null) => _io_.Out(x, sep ?? Environment.NewLine);class AtCoderIO{public required StandardIOBackend Backend { get; init; }Memory<string> _input = Array.Empty<string>();int _iter = 0;public string Next(){while (_iter >= _input.Length) (_input, _iter) = (Backend.ReadLine().Trim().Split(' '), 0);return _input.Span[_iter++];}public void Out(object? x, string separator){if (x == null) return;if (x is System.Collections.IEnumerable a and not string){var objects = a.Cast<object>();if (!objects.Any()) return;x = string.Join(separator, objects);}Backend.WriteLine(x);}}class StandardIOBackend{readonly StreamReader _sr = new(Console.OpenStandardInput());readonly StreamWriter _sw = new(Console.OpenStandardOutput()) { AutoFlush = false };public string ReadLine() => _sr.ReadLine()!;public void WriteLine(object? value) => _sw.WriteLine(value);public void Flush() => _sw.Flush();}#endregionstatic class Extensions{public static T[] Repeat<T>(this int time, Func<T> F) => Enumerable.Range(0, time).Select(_ => F()).ToArray();public static (long d, long x, long y) ExtendedGCD(long a, long b){var (x0, y0, x1, y1) = (1L, 0L, 0L, 1L);while (b != 0){var q = a / b;(a, b) = (b, a - q * b);(x0, y0, x1, y1) = (x1, y1, x0 - q * x1, y0 - q * y1);}return (a, x0, y0);}}