結果
| 問題 | No.742 にゃんにゃんにゃん 猫の挨拶 | 
| コンテスト | |
| ユーザー |  | 
| 提出日時 | 2020-01-30 09:38:39 | 
| 言語 | D (dmd 2.109.1) | 
| 結果 | 
                                AC
                                 
                             | 
| 実行時間 | 14 ms / 2,500 ms | 
| コード長 | 3,200 bytes | 
| コンパイル時間 | 1,448 ms | 
| コンパイル使用メモリ | 145,308 KB | 
| 実行使用メモリ | 6,944 KB | 
| 最終ジャッジ日時 | 2024-06-22 04:46:28 | 
| 合計ジャッジ時間 | 2,005 ms | 
| ジャッジサーバーID (参考情報) | judge5 / judge4 | 
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| ファイルパターン | 結果 | 
|---|---|
| other | AC * 16 | 
コンパイルメッセージ
Main.d(91): Deprecation: function `Main.IO!(makeGlobal, makeGlobal).IO.put!("{}", long).put.putMain!(c, long).putMain` function requires a dual-context, which is deprecated
Main.d-mixin-79(79):        instantiated from here: `putMain!(c, long)`
Main.d(19):        instantiated from here: `put!("{}", long)`
            
            ソースコード
// URL: https://yukicoder.me/problems/no/742
import std.algorithm, std.array, std.container, std.math, std.range, std.typecons, std.string;
version(unittest) {} else
void main()
{
  int N; io.getV(N);
  int[] M; io.getC(N, M);
  auto ft = fenwickTree!int(N+1);
  auto r = 0L;
  foreach (Mi; M) {
    r += ft[Mi..$];
    ++ft[Mi];
  }
  io.put(r);
}
class FenwickTree(T)
{
  const size_t n;
  this(size_t n) { this.n = n; this.buf = new T[](n+1); }
  void opIndexOpAssign(string op)(T val, size_t i) if (op=="+"||op=="-")
  { ++i; for (; i <= n; i += i&-i) mixin("buf[i]"~op~"=val;"); }
  void opIndexUnary(string op)(size_t i) if (op=="++"||op=="--")
  { ++i; for (; i <= n; i += i&-i) mixin(op~"buf[i];"); }
  pure T opIndex(size_t i) { return opSlice(i, i+1); }
  pure T opSlice(size_t r, size_t l) { return get(l) - get(r); }
  pure size_t opDollar() { return n; }
  private
  {
    T[] buf;
    pure T get(size_t i)
    {
      auto s = T(0);
      for (; i > 0; i -= i & -i) s += buf[i];
      return s;
    }
  }
}
FenwickTree!T fenwickTree(T)(size_t n) { return new FenwickTree!T(n); }
auto io = IO!()();
import std.stdio;
struct IO(alias IN = stdin, alias OUT = stdout)
{
  import std.conv, std.format, std.meta, std.traits;
  auto getV(T...)(ref T v) { foreach (ref w; v) get(w); }
  auto getA(T)(size_t n, ref T v) if (hasAssignableElements!T)
  { v = new T(n); foreach (ref w; v) get(w); }
  auto 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]);
  }
  auto 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...)
  {
    auto getS(T)(size_t n, ref T v)
    { v = new T(n); foreach (ref w; v) foreach (e; E) mixin("get(w."~e~");"); }
  }
  auto put(alias conf = "{}", T...)(T v)
  {
    import core.stdc.stdlib;
    mixin("const PutConf c = "~conf~"; putMain!c(v);");
  }
  auto putB(alias conf = "{}", S, T)(bool c, S t, T f) { if (c) put(t); else put(f); }
  auto 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; }
    auto get(T)(ref T v) { if (sp.empty) nextLine(); v = sp.front.to!T; sp.popFront(); }
    auto putMain(PutConf c, T...)(T v)
    {
      foreach (i, w; v) {
        putOne!c(w);
        if (i < v.length-1) OUT.write(c.delimiter);
      }
      static if (c.newline) OUT.writeln;
      static if (c.flush) OUT.flush();
      static if (c.exit) exit(0);
    }
    auto putOne(PutConf c, T)(T v)
    {
      static if (isInputRange!T && !isSomeString!T) putRange!c(v);
      else if (isFloatingPoint!T) OUT.write(format(c.floatFormat, v));
      else OUT.write(v);
    }
    auto 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);
      }
    }
  }
}
const struct PutConf
{
  bool newline = true, flush, exit;
  string floatFormat = "%.10f", delimiter = " ";
}
            
            
            
        