結果

問題 No.261 ぐるぐるぐるぐる！あみだくじ！
コンテスト
ユーザー hos.lyric
提出日時 2019-01-24 15:25:47
言語 D
(dmd 2.109.1)
結果
AC  
実行時間 3 ms / 5,000 ms
コード長 4,129 bytes
コンパイル時間 1,101 ms
コンパイル使用メモリ 133,164 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-06-13 03:39:16
合計ジャッジ時間 2,435 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge2
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 * 37
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(90): Deprecation: foreach: loop index implicitly converted from `size_t` to `int`
Main.d(91): Deprecation: foreach: loop index implicitly converted from `size_t` to `int`
Main.d(103): Deprecation: foreach: loop index implicitly converted from `size_t` to `int`
Main.d(106): Deprecation: foreach: loop index implicitly converted from `size_t` to `int`

ソースコード

diff # 

import std.conv, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.container, std.math, std.numeric, std.range, 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(T)(in T[] as, in bool delegate(T) test) { int low = -1, upp = cast(int)(as.length); for (; low + 1 < upp; ) { int mid = (low + upp) >> 1; (test(as[mid]) ? low : upp) = mid; } return upp; }
int lowerBound(T)(in T[] as, in T val) { return as.binarySearch((T a) => (a < val)); }
int upperBound(T)(in T[] as, in T val) { return as.binarySearch((T a) => (a <= val)); }


Int mod(Int)(Int a, Int m) { if ((a %= m) < 0) a += m; return a; }
Int gcd(Int)(Int a, Int b) { return (b != 0) ? gcd(b, a % b) : a; }
Int lcm(Int)(Int a, Int b) { return a / gcd(a, b) * b; }
Int gojo(Int)(Int a, Int b, out Int x, out Int y) {
  if (b != 0) { Int g = gojo(b, a % b, y, x); y -= (a / b) * x; return g; }
  x = 1; y = 0; return a;
}

// as[i] T == bs[i] (mod ms[i])
Tuple!(Int, "b", Int, "m") modSol(Int)(Int[] as, Int[] bs, Int[] ms) {
  Int B = 0, M = 1;
  foreach (i; 0 .. ms.length) {
    const a = as[i] % ms[i], b = bs[i] % ms[i];
    const b0 = b - a * B;
    Int x, y;
    const g = gojo(a * M, ms[i], x, y);
    if (b0 % g != 0) { B = M = 0; break; }
    const m0 = ms[i] / g;
    B += M * ((x * ((b0 / g) % m0)) % m0);
    M *= m0;
    B %= M;
  }
  if (B < 0) B += M;
  return Tuple!(Int, "b", Int, "m")(B, M);
}

int N, K;
int[] X, Y;
int Q;
int[][] A;

void main() {
  try {
    for (; ; ) {
      N = readInt();
      K = readInt();
      X = new int[K];
      Y = new int[K];
      foreach (k; 0 .. K) {
        X[k] = readInt() - 1;
        Y[k] = readInt() - 1;
      }
      Q = readInt();
      A = new int[][](Q, N);
      foreach (q; 0 .. Q) {
        foreach (u; 0 .. N) {
          A[q][u] = readInt() - 1;
        }
      }
      
      auto P = iota(N).array;
      foreach (k; 0 .. K) {
        swap(P[X[k]], P[Y[k]]);
      }
      debug {
        writeln("P = ", P);
      }
      auto vis = new bool[N];
      int[][] cycles;
      foreach (u; 0 .. N) {
        if (!vis[u]) {
          cycles ~= [[]];
          for (int v = u; !vis[v]; v = P[v]) {
            cycles[$ - 1] ~= v;
            vis[v] = true;
          }
        }
      }
      auto es = new int[N];
      auto fs = new int[N];
      foreach (int e, cycle; cycles) {
        foreach (int f, u; cycle) {
          es[u] = e;
          fs[u] = f;
        }
      }
      debug {
        writeln("cycles = ", cycles);
      }
      
      foreach (q; 0 .. Q) {
        long ans;
        long[] as, bs, ms;
        foreach (int e, cycle; cycles) {
          const len = cast(int)(cycle.length);
          int[] df;
          foreach (int f, u; cycle) {
            const ee = es[A[q][u]];
            const ff = fs[A[q][u]];
            if (e != ee) {
              ans = -1;
              goto failed;
            }
            df ~= (ff - f + len) % len;
          }
          df = df.sort.uniq.array;
          if (df.length != 1) {
            ans = -1;
            goto failed;
          }
          as ~= 1;
          bs ~= df[0];
          ms ~= len;
        }
        {
          debug {
            writeln("bs = ", bs);
            writeln("ms = ", ms);
          }
          auto res = modSol(as, bs, ms);
          if (res.m == 0) {
            ans = -1;
            goto failed;
          }
          ans = res.b;
          if (ans == 0) {
            ans = res.m;
          }
        }
       failed:
        writeln(ans);
      }
    }
  } catch (EOFException e) {
  }
}
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