結果

問題 No.1006 Share an Integer
コンテスト
ユーザー te-sh
提出日時 2020-03-27 18:40:12
言語 D
(dmd 2.109.1)
結果
AC  
実行時間 86 ms / 2,000 ms
コード長 5,711 bytes
コンパイル時間 1,349 ms
コンパイル使用メモリ 127,632 KB
実行使用メモリ 19,748 KB
最終ジャッジ日時 2024-06-22 05:55:11
合計ジャッジ時間 3,025 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge1
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 19
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(234): Deprecation: function `Main.IO!(makeGlobal, makeGlobal).IO.put!("{}", int, int).put.putMain!(c, int, int).putMain` function requires a dual-context, which is deprecated
Main.d-mixin-204(204):        instantiated from here: `putMain!(c, int, int)`
Main.d(25):        instantiated from here: `put!("{}", int, int)`

ソースコード

diff # 

// URL: https://yukicoder.me/problems/no/1006

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 X; io.getV(X);

  auto d = new int[](X); d[1..$] = 1;
  foreach (i; 2..X)
    for (auto j = i; j < X; j += i)
      ++d[j];

  auto c = new int[](X);
  foreach (A; 1..X) {
    auto B = X-A;
    c[A] = abs((A-d[A]) - (B-d[B]));
  }

  auto m = c[1..X].minElement;
  foreach (A; 1..X)
    if (c[A] == m)
      io.put(A, X-A);
}

pragma(inline) pure nothrow @nogc @safe
{
  auto lowerBoundBy(alias conv = "a", alias comp = "a<b", R, T)(const R a, const T v)
  {
    return a.sortedTuple!(conv, comp).lowerBound(tuple(a.front, v)).map!"a[0]";
  }

  auto upperBoundBy(alias conv = "a", alias comp = "a<b", R, T)(const R a, const T v)
  {
    return a.sortedTuple!(conv, comp).upperBound(tuple(a.front, v)).map!"a[0]";
  }

  auto sortedTuple(alias conv = "a", alias comp = "a<b", R)(const R a)
  {
    alias convFun = unaryFun!conv, compFun = binaryFun!comp;
    return a.map!(e => tuple(e, convFun(e))).assumeSorted!((a, b) => compFun(a[1], b[1]));
  }
}

pure nothrow @nogc @safe
{
  T isqrt(T)(T n)
    if (is(T == int) || is(T == long))
  {
    static if (is(T == int)) auto max = 46_341;
    else static if (is(T == long)) auto max = 3_037_000_500L;
    return iota(T(0), max).lowerBoundBy!("a^^2", "a<=b")(n).back;
  }
  T icbrt(T)(T n)
    if (is(T == int) || is(T == long))
  {
    static if (is(T == int)) auto max = 1_291;
    else static if (is(T == long)) auto max = 2_097_152L;
    return iota(T(0), max).lowerBoundBy!("a^^3", "a<=b")(n).back;
  }
}

struct PrimeFactor
{
  struct Factor(T)
  {
    T prime;
    int exp;
  }

  const int n;
  int[] primes;

  pure nothrow
  {
    this(int n)
    {
      this.n = n;

      auto sieve = BitArray();
      sieve.length((n+1)/2);
      sieve = ~sieve;

      foreach (p; 1..(n.isqrt-1)/2+1)
        if (sieve[p])
          for (auto q = p*3+1; q < (n+1)/2; q += p*2+1)
            sieve[q] = false;

      primes = sieve.bitsSet.map!(p => cast(int)p*2+1).array;
      primes[0] = 2;
    }
  }

  pure nothrow @safe
  {
    Factor!T[] div(T)(T x) const
      if (isIntegral!T)
      in { assert(x > 0 && x.isqrt <= n); }
    do
    {
      Factor!T[] factors;
      auto t = isqrt(x);
      foreach (p; primes) {
        if (p > t) break;
        auto c = 0;
        for (; x%p == 0; x /= p) ++c;
        if (c > 0) factors ~= Factor!T(p, c);
        if (x == 1) break;
      }
      if (x > 1) factors ~= [Factor!T(x, 1)];
      return factors;
    }

    T[] divisors(T)(T x) const
      if (isIntegral!T)
      in { assert(x > 0 && x.isqrt <= n); }
    do
    {
      auto factors = div(x);
      auto r = divisorsProc(factors, 0, 1);
      r.sort();
      return r;
    }
  }

  private
  {
    pure nothrow @safe
    {
      T[] divisorsProc(T)(const Factor!T[] factors, int i, T c) const
      {
        if (i == factors.length) return [c];
        T[] r;
        foreach (j; 0..factors[i].exp+1)
          r ~= divisorsProc(factors, i+1, c*factors[i].prime^^j);
        return r;
      }
    }
  }
}

pure nothrow
{
  auto primeFactor(int n)
  {
    return PrimeFactor(n);
  }

  auto primeFactorSqrtOf(T)(T n)
    if (isIntegral!T)
  {
    return PrimeFactor(cast(int)n.isqrt);
  }
}

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);
      }
    }
  }
}
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