#517314 (D) No.1123 Afforestation

提出ソース

結果

問題	No.1123 Afforestation
ユーザー	👑 hos.lyric
提出日時	2020-07-23 19:40:56
言語	D (dmd 2.106.1)
結果	TLE
実行時間	-
コード長	4,944 bytes
コンパイル時間	1,061 ms
コンパイル使用メモリ	131,508 KB
実行使用メモリ	313,748 KB
最終ジャッジ日時	2024-06-22 07:52:03
合計ジャッジ時間	41,548 ms
ジャッジサーバーID （参考情報）	judge3 / judge2

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 6,816 KB
testcase_01	AC	2 ms 6,940 KB
testcase_02	AC	1 ms 6,940 KB
testcase_03	AC	9 ms 6,940 KB
testcase_04	AC	68 ms 10,400 KB
testcase_05	AC	729 ms 85,972 KB
testcase_06	TLE	-
testcase_07	AC	1 ms 6,940 KB
testcase_08	AC	1 ms 6,944 KB
testcase_09	AC	2 ms 6,940 KB
testcase_10	AC	7 ms 6,944 KB
testcase_11	AC	35 ms 6,940 KB
testcase_12	AC	305 ms 40,848 KB
testcase_13	TLE	-
testcase_14	AC	3 ms 6,940 KB
testcase_15	AC	3 ms 6,944 KB
testcase_16	AC	2 ms 6,940 KB
testcase_17	AC	4 ms 6,940 KB
testcase_18	AC	10 ms 6,944 KB
testcase_19	AC	73 ms 10,900 KB
testcase_20	AC	803 ms 86,052 KB
testcase_21	TLE	-
testcase_22	TLE	-
testcase_23	TLE	-
testcase_24	TLE	-
testcase_25	TLE	-
testcase_26	AC	2 ms 6,940 KB
testcase_27	AC	3 ms 6,944 KB
testcase_28	AC	78 ms 14,048 KB
testcase_29	AC	2 ms 6,940 KB
testcase_30	AC	3 ms 6,940 KB
testcase_31	AC	8 ms 7,672 KB
testcase_32	AC	3 ms 6,940 KB
testcase_33	AC	2 ms 6,944 KB
testcase_34	AC	10 ms 6,940 KB
testcase_35	AC	10 ms 6,944 KB
testcase_36	AC	3 ms 6,940 KB
testcase_37	AC	22 ms 6,940 KB
testcase_38	AC	2 ms 6,944 KB
testcase_39	AC	11 ms 6,940 KB
testcase_40	AC	11 ms 6,940 KB
testcase_41	AC	11 ms 6,944 KB
testcase_42	AC	34 ms 6,944 KB
testcase_43	AC	73 ms 9,344 KB
testcase_44	AC	158 ms 15,032 KB
testcase_45	AC	158 ms 14,972 KB
testcase_46	AC	190 ms 14,392 KB
testcase_47	AC	194 ms 16,300 KB
testcase_48	AC	2 ms 6,944 KB
testcase_49	AC	3 ms 6,944 KB
testcase_50	AC	11 ms 6,940 KB
testcase_51	AC	11 ms 6,944 KB
testcase_52	AC	3 ms 6,940 KB
testcase_53	AC	3 ms 6,940 KB
testcase_54	AC	3 ms 6,944 KB
testcase_55	AC	11 ms 6,940 KB
testcase_56	AC	10 ms 6,944 KB
testcase_57	AC	11 ms 6,944 KB
testcase_58	AC	34 ms 6,940 KB
testcase_59	AC	76 ms 11,732 KB
testcase_60	AC	156 ms 14,644 KB
testcase_61	AC	156 ms 14,620 KB
testcase_62	AC	188 ms 14,044 KB
testcase_63	AC	191 ms 15,284 KB
testcase_64	AC	2 ms 6,944 KB
testcase_65	AC	3 ms 6,940 KB
testcase_66	AC	5 ms 6,944 KB
testcase_67	AC	4 ms 6,944 KB
testcase_68	AC	11 ms 6,944 KB
testcase_69	AC	21 ms 6,940 KB
testcase_70	AC	34 ms 6,940 KB
testcase_71	AC	73 ms 9,408 KB
testcase_72	AC	2 ms 6,940 KB
testcase_73	AC	2 ms 6,944 KB
testcase_74	AC	3 ms 6,940 KB
testcase_75	AC	2 ms 6,940 KB
testcase_76	AC	2 ms 6,944 KB
testcase_77	AC	2 ms 6,940 KB
testcase_78	AC	2 ms 6,940 KB
testcase_79	AC	2 ms 6,940 KB
testcase_80	AC	2 ms 6,940 KB
testcase_81	AC	3 ms 6,940 KB
testcase_82	AC	2 ms 6,944 KB
testcase_83	AC	3 ms 6,940 KB
testcase_84	AC	2,317 ms 310,544 KB
testcase_85	AC	2,313 ms 310,028 KB
testcase_86	AC	2 ms 6,940 KB
testcase_87	AC	3 ms 6,944 KB
testcase_88	AC	2,295 ms 300,052 KB
testcase_89	AC	2,252 ms 300,268 KB
testcase_90	AC	3 ms 6,940 KB
testcase_91	AC	3 ms 6,944 KB
testcase_92	AC	3 ms 6,944 KB

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ソースコード

raw source code

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)); }


class MaxFlow(Capa) {
  enum Capa wEPS = 0;
  enum Capa wINF = 10^^9;
  int n, m;
  int[][] g;
  int[] zu;
  Capa[] capa;
  Capa tof;
  int[] lev, see, que;
  this(int n) {
    this.n = n; m = 0; g = new int[][n]; zu = []; capa = [];
    lev = new int[n]; see = new int[n]; que = new int[n];
  }
  void addEdge(int u, int v, Capa w0, Capa w1 = 0) {
    g[u] ~= m; zu ~= v; capa ~= w0; ++m;
    g[v] ~= m; zu ~= u; capa ~= w1; ++m;
  }
  Capa augment(int src, int ink, Capa flo) {
    if (src == ink) return flo;
    foreach (i; g[src][see[src] .. $]) {
      if (capa[i] > wEPS && lev[src] < lev[zu[i]]) {
        Capa f = augment(zu[i], ink, min(flo, capa[i]));
        if (f > wEPS) { capa[i] -= f; capa[i ^ 1] += f; return f; }
      }
      ++see[src];
    }
    return 0;
  }
  bool dinic(int src, int ink, Capa flo = wINF) {
    for (tof = 0; tof + wEPS < flo; ) {
      int qb, qe;
      lev[] = -1;
     dinicBFS:
      for (lev[src] = 0, que[qe++] = src; qb != qe; ) {
        const u = que[qb++];
        foreach (i; g[u]) {
          const v = zu[i];
          if (capa[i] > wEPS && lev[v] == -1) {
            lev[v] = lev[u] + 1; que[qe++] = v;
            if (v == ink) break dinicBFS;
          }
        }
      }
      if (lev[ink] == -1) return false;
      see[] = 0;
      for (; ; ) {
        Capa f = augment(src, ink, flo - tof);
        if (f <= wEPS) break;
        tof += f;
      }
    }
    return true;
  }
}


int H, W;
int[] A, B;
int K;
int[] X, Y;

char[][] solve() {
  auto ans = new char[][](H, W);
  foreach (x; 0 .. H) {
    ans[x][] = '.';
  }
  auto axs = new Tuple!(int, int)[H];
  foreach (x; 0 .. H) {
    axs[x] = tuple(A[x], x);
  }
  axs.sort;
  auto bs = B.dup;
  foreach_reverse (ax; axs) {
    const x = ax[1];
    auto yss = new int[][H + 1];
    foreach (y; 0 .. W) {
      yss[bs[y]] ~= y;
    }
    int a = A[x];
    foreach_reverse (b; 1 .. H + 1) {
      foreach (y; yss[b]) {
        if (a > 0) {
          ans[x][y] = 'o';
          --a;
          --bs[y];
        }
      }
    }
    if (a != 0) {
      return null;
    }
  }
  if (!bs.all!"a == 0") {
    return null;
  }
  debug {
    writeln("ans = ", ans);
  }
  
  auto mf = new MaxFlow!(int)(2 + H + W);
  auto ex = new int[2 + H + W];
  auto ids = new int[][](H, W);
  foreach (k; 0 .. K) {
    if (ans[X[k]][Y[k]] == 'o') {
      ex[2 + X[k]] += 1;
      ex[2 + H + Y[k]] -= 1;
    }
    ids[X[k]][Y[k]] = -1;
    ans[X[k]][Y[k]] = 'x';
  }
  foreach (x; 0 .. H) foreach (y; 0 .. W) {
    if (ans[x][y] != 'x') {
      ids[x][y] = mf.m;
      if (ans[x][y] == 'o') {
        mf.addEdge(2 + H + y, 2 + x, 1);
      } else {
        mf.addEdge(2 + x, 2 + H + y, 1);
      }
    }
  }
  int flow;
  foreach (u; 2 .. 2 + H + W) {
    if (ex[u] > 0) {
      flow += ex[u];
      mf.addEdge(0, u, ex[u]);
    } else if (ex[u] < 0) {
      mf.addEdge(u, 1, -ex[u]);
    }
  }
  const res = mf.dinic(0, 1, flow);
  if (!res) {
    return null;
  }
  foreach (x; 0 .. H) foreach (y; 0 .. W) {
    if (ans[x][y] != 'x') {
      if (mf.capa[ids[x][y]] == 0) {
        ans[x][y] ^= '.' ^ 'o';
      }
    }
  }
  return ans;
}

void main() {
  try {
    for (; ; ) {
      H = readInt();
      W = readInt();
      A = new int[H];
      foreach (x; 0 .. H) {
        A[x] = readInt();
      }
      B = new int[W];
      foreach (y; 0 .. W) {
        B[y] = readInt();
      }
      K = readInt();
      X = new int[K];
      Y = new int[K];
      foreach (k; 0 .. K) {
        X[k] = readInt() - 1;
        Y[k] = readInt() - 1;
      }
      
      const ans = solve();
      if (ans) {
        writeln("Yay!");
        foreach (x; 0 .. H) {
          writeln(ans[x]);
        }
      } else {
        writeln(":(");
      }
    }
  } catch (EOFException e) {
  }
}

yukicoder

結果

テストケース

ソースコード