#664766 (D) No.1501 酔歩

提出ソース

結果

問題	No.1501 酔歩
ユーザー	te-sh
提出日時	2021-06-07 14:16:55
言語	D (dmd 2.106.1)
結果	WA
実行時間	-
コード長	5,197 bytes
コンパイル時間	1,043 ms
コンパイル使用メモリ	112,760 KB
実行使用メモリ	9,628 KB
最終ジャッジ日時	2024-06-22 11:25:26
合計ジャッジ時間	5,233 ms
ジャッジサーバーID （参考情報）	judge3 / judge1

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	1 ms 6,816 KB
testcase_01	AC	1 ms 6,812 KB
testcase_02	AC	1 ms 6,940 KB
testcase_03	AC	1 ms 6,940 KB
testcase_04	WA	-
testcase_05	AC	72 ms 7,416 KB
testcase_06	AC	54 ms 6,944 KB
testcase_07	AC	69 ms 7,260 KB
testcase_08	AC	16 ms 6,940 KB
testcase_09	AC	62 ms 8,020 KB
testcase_10	AC	23 ms 6,944 KB
testcase_11	AC	56 ms 6,940 KB
testcase_12	AC	33 ms 6,940 KB
testcase_13	WA	-
testcase_14	WA	-
testcase_15	WA	-
testcase_16	WA	-
testcase_17	WA	-
testcase_18	WA	-
testcase_19	WA	-
testcase_20	WA	-
testcase_21	WA	-
testcase_22	AC	87 ms 8,764 KB
testcase_23	AC	92 ms 8,928 KB
testcase_24	AC	89 ms 8,784 KB
testcase_25	AC	85 ms 9,076 KB
testcase_26	AC	81 ms 8,836 KB
testcase_27	AC	86 ms 8,728 KB
testcase_28	AC	94 ms 8,912 KB
testcase_29	AC	81 ms 8,760 KB
testcase_30	AC	97 ms 8,792 KB
testcase_31	AC	82 ms 8,828 KB
testcase_32	AC	84 ms 9,628 KB
testcase_33	AC	92 ms 8,856 KB
testcase_34	AC	89 ms 8,984 KB
testcase_35	AC	86 ms 9,216 KB
testcase_36	AC	90 ms 8,776 KB
testcase_37	AC	80 ms 8,828 KB
testcase_38	AC	82 ms 8,892 KB
testcase_39	AC	97 ms 8,732 KB
testcase_40	AC	83 ms 8,796 KB
testcase_41	AC	92 ms 8,892 KB
testcase_42	AC	58 ms 9,164 KB
testcase_43	WA	-
testcase_44	WA	-
testcase_45	AC	60 ms 8,700 KB
testcase_46	AC	64 ms 8,804 KB
testcase_47	AC	54 ms 8,760 KB
testcase_48	AC	68 ms 9,048 KB
testcase_49	AC	77 ms 8,988 KB
testcase_50	AC	68 ms 8,928 KB
testcase_51	AC	68 ms 9,072 KB
testcase_52	AC	68 ms 9,444 KB
testcase_53	WA	-
testcase_54	AC	1 ms 6,940 KB
testcase_55	AC	1 ms 6,944 KB

権限があれば一括ダウンロードができます

コンパイルメッセージ

Main.d(206): Deprecation: function `Main.IO!(makeGlobal, makeGlobal).IO.put!("{exit: true}", int).put.putMain!(c, int).putMain` function requires a dual-context, which is deprecated
Main.d-mixin-176(176):        instantiated from here: `putMain!(c, int)`
Main.d(12):        instantiated from here: `put!("{exit: true}", int)`
Main.d(206): Deprecation: function `Main.IO!(makeGlobal, makeGlobal).IO.put!("{}", string).put.putMain!(c, string).putMain` function requires a dual-context, which is deprecated
Main.d-mixin-176(176):        instantiated from here: `putMain!(c, string)`
Main.d(27):        instantiated from here: `put!("{}", string)`
/home/linuxbrew/.linuxbrew/opt/dmd/include/dlang/dmd/std/numeric.d(2999): Warning: cannot inline function `std.numeric.gcdImpl!ulong.gcdImpl`

ソースコード

raw source code

// URL: https://yukicoder.me/problems/no/1501

import std.algorithm, std.array, std.bitmanip, std.container, std.conv, std.format,
       std.functional, std.math, std.range, std.traits, std.typecons, std.stdio, std.string;

version(unittest) {} else
void main()
{
  int N, K; io.getV(N, K);
  long[] A; io.getA(N, A);

  if (K == 1) io.put!"{exit: true}"(0);

  auto a = new Frac!long[](N), b = new Frac!long[](N);
  foreach (i; 1..N-1) {
    a[i] = frac(A[i-1], A[i-1]+A[i+1]);
    b[i] = frac(A[i+1], A[i-1]+A[i+1]);
  }

  auto c = new Frac!long[](N); c[0] = frac(0L, 1L);
  foreach (i; 1..N-1)
    c[i] = b[i] / (frac(1L, 1L) - a[i] * c[i-1]);

  auto r = frac(1L, 1L);
  foreach (i; K-1..N-1) r *= c[i];

  io.put(r.a.to!string ~ "/" ~ r.b.to!string);
}

struct Frac(T)
{
  import std.numeric : gcd;

  T a, b;

  pure nothrow @nogc @safe
  {
    this(T a, T b)
      in { assert(b != 0); }
    do
    {
      this.a = a; this.b = b;
    }

    bool opEquals(Frac!T r) const
    {
      return (a == 0 && r.a == 0) || (a == r.a && b == r.b);
    }
    int opCmp(Frac!T r) const
    {
      return a*r.b<r.a*b ? -1 : a*r.b>r.a*b ? 1 : 0;
    }

    Frac!T inv()
      in { assert(a != 0); }
    do
    {
      return Frac!T(b, a).normalizeSign;
    }
    Frac!T opUnary(string op: "-")()
    {
      return Frac!T(-a, b);
    }

    Frac!T opBinary(string op)(Frac!T r)
      if (op == "+" || op == "-")
    {
      auto g = gcd(b, r.b);
      return Frac!T(mixin("r.b/g*a"~op~"b/g*r.a"), b/g*r.b).reduction();
    }
    Frac!T opOpAssign(string op)(Frac!T r)
      if (op == "+" || op == "-")
    {
      auto g = gcd(b, r.b);
      a = mixin("r.b/g*a"~op~"b/g*r.a"); b = b/g*r.b;
      return reduction();
    }

    Frac!T opBinary(string op: "*")(Frac!T r)
    {
      auto g1 = gcd(a.abs, r.b), g2 = gcd(r.a.abs, b);
      return Frac!T((a/g1)*(r.a/g2), (b/g2)*(r.b/g1));
    }
    ref Frac!T opOpAssign(string op: "*")(Frac!T r)
    {
      auto g1 = gcd(a.abs, r.b), g2 = gcd(r.a.abs, b);
      a = (a/g1)*(r.a/g2); b = (b/g2)*(r.b/g1); return this;
    }

    Frac!T opBinary(string op: "/")(Frac!T r)
      in { assert(r.b != 0); }
    do
    {
      auto g1 = gcd(a.abs, r.a.abs), g2 = gcd(b, r.b);
      return Frac!T((a/g1)*(r.b/g2), (b/g2)*(r.a/g1)).normalizeSign();
    }
    ref Frac!T opOpAssign(string op: "/")(Frac!T r)
      in { assert(r.b != 0); }
    do
    {
      auto g1 = gcd(a.abs, r.a.abs), g2 = gcd(b, r.b);
      a = (a/g1)*(r.b/g2); b = (b/g2)*(r.a/g1);
      return normalizeSign();
    }

    private
    {
      ref Frac!T reduction()
      {
        auto g = gcd(a.abs, b);
        a /= g; b /= g;
        return this;
      }
      ref Frac!T normalizeSign()
      {
        if (b < 0) { a = -a; b = -b; }
        return this;
      }
    }
  }
}
pure nothrow @nogc @safe
{
  Frac!T frac(T)(T a, T b)
  {
    return Frac!T(a, b).normalizeSign().reduction();
  }
}

auto io = IO!()();
import std.stdio;
struct IO(alias IN = stdin, alias OUT = stdout)
{
  import std.meta : allSatisfy;
  import core.stdc.stdlib : exit;

  void getV(T...)(ref T v)
  {
    foreach (ref w; v) get(w);
  }
  void getA(T)(size_t n, ref T v)
    if (hasAssignableElements!T)
  {
    v = new T(n);
    foreach (ref w; v) get(w);
  }
  void getC(T...)(size_t n, ref T v)
    if (allSatisfy!(hasAssignableElements, T))
  {
    foreach (ref w; v) w = new typeof(w)(n);
    foreach (i; 0..n) foreach (ref w; v) get(w[i]);
  }
  void getM(T)(size_t r, size_t c, ref T v)
    if (hasAssignableElements!T && hasAssignableElements!(ElementType!T))
  {
    v = new T(r);
    foreach (ref w; v) getA(c, w);
  }
  template getS(E...)
  {
    void getS(T)(size_t n, ref T v)
    {
      v = new T(n);
      foreach (ref w; v) foreach (e; E) mixin("get(w."~e~");");
    }
  }

  const struct PutConf
  {
    bool newline = true, flush, exit;
    string floatFormat = "%.10f", delimiter = " ";
  }

  void put(alias conf = "{}", T...)(T v)
  {
    mixin("const PutConf c = "~conf~"; putMain!c(v);");
  }
  void putB(alias conf = "{}", S, T)(bool c, S t, T f)
  {
    if (c) put!conf(t);
    else put!conf(f);
  }
  void putRaw(T...)(T v)
  {
    OUT.write(v);
    OUT.writeln;
  }

  private
  {
    dchar[] buf;
    auto sp = (new dchar[](0)).splitter;

    void nextLine()
    {
      IN.readln(buf);
      sp = buf.splitter;
    }
    void get(T)(ref T v)
    {
      if (sp.empty) nextLine();
      v = sp.front.to!T;
      sp.popFront();
    }

    void putMain(PutConf c, T...)(T v)
    {
      foreach (i, w; v) {
        putOne!c(w);
        if (i+1 < v.length) OUT.write(c.delimiter);
      }
      static if (c.newline) OUT.writeln;
      static if (c.flush) OUT.flush();
      static if (c.exit) exit(0);
    }
    void putOne(PutConf c, T)(T v)
    {
      static if (isInputRange!T && !isSomeString!T) putRange!c(v);
      else static if (isFloatingPoint!T) OUT.write(format(c.floatFormat, v));
      else static if (hasMember!(T, "fprint")) v.fprint(OUT);
      else OUT.write(v);
    }
    void putRange(PutConf c, T)(T v)
    {
      auto w = v;
      while (!w.empty) {
        putOne!c(w.front); w.popFront();
        if (!w.empty) OUT.write(c.delimiter);
      }
    }
  }
}