結果

問題 No.1867 Partitions and Inversions
ユーザー 👑 hos.lyrichos.lyric
提出日時 2022-03-04 22:13:18
言語 D
(dmd 2.106.1)
結果
AC  
実行時間 2,238 ms / 5,000 ms
コード長 3,456 bytes
コンパイル時間 719 ms
コンパイル使用メモリ 107,460 KB
実行使用メモリ 77,516 KB
最終ジャッジ日時 2023-09-04 16:16:04
合計ジャッジ時間 86,949 ms
ジャッジサーバーID
(参考情報)
judge15 / judge12
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 2 ms
4,380 KB
testcase_01 AC 2 ms
4,380 KB
testcase_02 AC 2,155 ms
75,796 KB
testcase_03 AC 2,146 ms
75,820 KB
testcase_04 AC 2,170 ms
75,900 KB
testcase_05 AC 2,191 ms
77,144 KB
testcase_06 AC 2,214 ms
76,552 KB
testcase_07 AC 2,157 ms
77,516 KB
testcase_08 AC 2,187 ms
75,796 KB
testcase_09 AC 2,186 ms
75,860 KB
testcase_10 AC 2,107 ms
76,228 KB
testcase_11 AC 2,123 ms
76,104 KB
testcase_12 AC 2,193 ms
77,052 KB
testcase_13 AC 2,176 ms
75,976 KB
testcase_14 AC 2,209 ms
76,924 KB
testcase_15 AC 2,238 ms
76,600 KB
testcase_16 AC 2,160 ms
76,908 KB
testcase_17 AC 2,149 ms
76,568 KB
testcase_18 AC 2,192 ms
75,840 KB
testcase_19 AC 2,225 ms
76,188 KB
testcase_20 AC 2,140 ms
77,140 KB
testcase_21 AC 2,114 ms
75,744 KB
testcase_22 AC 2,148 ms
76,616 KB
testcase_23 AC 2,090 ms
75,916 KB
testcase_24 AC 2,144 ms
75,588 KB
testcase_25 AC 2,180 ms
76,212 KB
testcase_26 AC 2,179 ms
75,672 KB
testcase_27 AC 2,156 ms
76,460 KB
testcase_28 AC 2,101 ms
75,852 KB
testcase_29 AC 2,190 ms
76,512 KB
testcase_30 AC 2,165 ms
75,804 KB
testcase_31 AC 2,170 ms
76,212 KB
testcase_32 AC 2 ms
4,380 KB
testcase_33 AC 1 ms
4,376 KB
testcase_34 AC 1 ms
4,376 KB
testcase_35 AC 1 ms
4,380 KB
testcase_36 AC 1 ms
4,376 KB
testcase_37 AC 2 ms
4,376 KB
testcase_38 AC 37 ms
4,896 KB
testcase_39 AC 37 ms
6,412 KB
testcase_40 AC 37 ms
4,956 KB
testcase_41 AC 36 ms
4,900 KB
testcase_42 AC 36 ms
5,008 KB
testcase_43 AC 857 ms
37,312 KB
testcase_44 AC 856 ms
35,448 KB
testcase_45 AC 855 ms
35,640 KB
testcase_46 AC 873 ms
35,636 KB
testcase_47 AC 878 ms
35,708 KB
testcase_48 AC 844 ms
36,844 KB
testcase_49 AC 851 ms
35,496 KB
testcase_50 AC 867 ms
35,632 KB
testcase_51 AC 897 ms
35,772 KB
testcase_52 AC 880 ms
36,080 KB
testcase_53 AC 857 ms
35,884 KB
testcase_54 AC 840 ms
36,468 KB
testcase_55 AC 871 ms
36,952 KB
testcase_56 AC 842 ms
36,020 KB
testcase_57 AC 848 ms
35,884 KB
testcase_58 AC 875 ms
36,328 KB
testcase_59 AC 869 ms
36,892 KB
testcase_60 AC 869 ms
37,068 KB
testcase_61 AC 857 ms
35,500 KB
testcase_62 AC 864 ms
35,768 KB
testcase_63 AC 972 ms
76,812 KB
testcase_64 AC 1 ms
4,376 KB
testcase_65 AC 1 ms
4,380 KB
testcase_66 AC 1 ms
4,376 KB
testcase_67 AC 261 ms
75,988 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

import std.conv, std.functional, std.range, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, std.regex, std.typecons;
import core.bitop;

class EOFException : Throwable { this() { super("EOF"); } }
string[] tokens;
string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; }
int readInt() { return readToken.to!int; }
long readLong() { return readToken.to!long; }
real readReal() { return readToken.to!real; }

bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } }
bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } }

int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; }
int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); }
int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); }


void bAdd(T)(T[] bit, int pos, T val)
in {
  assert(0 <= pos && pos < bit.length, "bAdd: 0 <= pos < |bit| must hold");
}
do {
  for (int x = pos; x < bit.length; x |= x + 1) {
    bit[x] += val;
  }
}

// sum of [0, pos)
T bSum(T)(T[] bit, int pos)
in {
  assert(0 <= pos && pos <= bit.length, "bSum: 0 <= pos <= |bit| must hold");
}
do {
  T ret = 0;
  for (int x = pos - 1; x >= 0; x = (x & (x + 1)) - 1) {
    ret += bit[x];
  }
  return ret;
}


enum INF = 10^^9;

void main() {
  try {
    for (; ; ) {
      const N = readInt;
      auto P = new int[N];
      foreach (i; 0 .. N) {
        P[i] = readInt - 1;
      }
      
      auto score = new int[][](N + 1, N + 1);
      {
        auto bit = new int[N];
        foreach (i; 0 .. N) {
          bit[] = 0;
          foreach (j; i .. N) {
            score[i][j + 1] = score[i][j] + ((j - i) - bit.bSum(P[j]));
            bit.bAdd(P[j], 1);
          }
        }
      }
      debug {
        writeln("score = ", score);
      }
      
      auto dp = new int[][](N + 1, N + 1);
      foreach (k; 0 .. N + 1) {
        dp[k][] = -INF;
      }
      dp[0][0] = 0;
      
      int len;
      auto que = new int[N + 1];
      foreach (k; 0 .. N) {
        len = 0;
        foreach (i; 0 .. N + 1) {
          int calc(int j) {
            return dp[k][j] + score[j][i];
          }
          bool check(int j2, int j1) {
            int lo = i, hi = N + 1;
            for (; lo + 1 < hi; ) {
              const mid = (lo + hi) / 2;
              ((dp[k][j1] + score[j1][mid] >= dp[k][i] + score[i][mid]) ? hi : lo) = mid;
            }
            return (hi > N || dp[k][j2] + score[j2][hi] >= dp[k][j1] + score[j1][hi]);
          }
          
          for (; len >= 2 && calc(que[len - 2]) >= calc(que[len - 1]); --len) {}
          if (len >= 1) {
            dp[k + 1][i] = calc(que[len - 1]);
          }
          
          if (len == 0 || calc(que[len - 1]) < calc(i)) {
            for (; len >= 2 && check(que[len - 2], que[len - 1]); --len) {}
            que[len++] = i;
          }
        }
        debug {
          writefln("dp[%s] = %s", k + 1, dp[k + 1]);
        }
      }
      
      foreach (k; 1 .. N + 1) {
        writeln(score[0][N] - dp[k][N]);
      }
    }
  } catch (EOFException e) {
  }
}
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