#670218 (D) No.1566 All Even

提出ソース

結果

問題	No.1566 All Even
ユーザー	👑 hos.lyric
提出日時	2021-06-26 13:52:24
言語	D (dmd 2.106.1)
結果	AC
実行時間	7 ms / 2,000 ms
コード長	5,884 bytes
コンパイル時間	1,762 ms
コンパイル使用メモリ	154,932 KB
実行使用メモリ	6,944 KB
最終ジャッジ日時	2024-06-22 11:39:41
合計ジャッジ時間	2,163 ms
ジャッジサーバーID （参考情報）	judge1 / judge4

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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	1 ms 6,816 KB
testcase_01	AC	2 ms 6,940 KB
testcase_02	AC	2 ms 6,944 KB
testcase_03	AC	1 ms 6,944 KB
testcase_04	AC	1 ms 6,940 KB
testcase_05	AC	1 ms 6,944 KB
testcase_06	AC	7 ms 6,944 KB
testcase_07	AC	1 ms 6,940 KB
testcase_08	AC	1 ms 6,944 KB
testcase_09	AC	1 ms 6,940 KB
testcase_10	AC	1 ms 6,940 KB
testcase_11	AC	1 ms 6,944 KB
testcase_12	AC	1 ms 6,940 KB
testcase_13	AC	1 ms 6,940 KB
testcase_14	AC	1 ms 6,944 KB
testcase_15	AC	1 ms 6,940 KB
testcase_16	AC	1 ms 6,940 KB
testcase_17	AC	1 ms 6,940 KB
testcase_18	AC	1 ms 6,940 KB
testcase_19	AC	1 ms 6,944 KB
testcase_20	AC	1 ms 6,940 KB
testcase_21	AC	1 ms 6,944 KB
testcase_22	AC	2 ms 6,940 KB
testcase_23	AC	1 ms 6,944 KB
testcase_24	AC	7 ms 6,944 KB
testcase_25	AC	1 ms 6,944 KB
testcase_26	AC	7 ms 6,944 KB
testcase_27	AC	2 ms 6,944 KB
testcase_28	AC	1 ms 6,944 KB
testcase_29	AC	1 ms 6,940 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)); }


struct ModInt(uint M_) {
  import std.conv : to;
  alias M = M_;
  uint x;
  this(ModInt a) { x = a.x; }
  this(uint x_) { x = x_ % M; }
  this(ulong x_) { x = x_ % M; }
  this(int x_) { x = ((x_ %= cast(int)(M)) < 0) ? (x_ + cast(int)(M)) : x_; }
  this(long x_) { x = cast(uint)(((x_ %= cast(long)(M)) < 0) ? (x_ + cast(long)(M)) : x_); }
  ref ModInt opAssign(T)(T a) if (is(T == uint) || is(T == ulong) || is(T == int) || is(T == long)) { return this = ModInt(a); }
  ref ModInt opOpAssign(string op, T)(T a) {
    static if (is(T == ModInt)) {
      static if (op == "+") { x = ((x += a.x) >= M) ? (x - M) : x; }
      else static if (op == "-") { x = ((x -= a.x) >= M) ? (x + M) : x; }
      else static if (op == "*") { x = cast(uint)((cast(ulong)(x) * a.x) % M); }
      else static if (op == "/") { this *= a.inv(); }
      else static assert(false);
      return this;
    } else static if (op == "^^") {
      if (a < 0) return this = inv()^^(-a);
      ModInt b = this, c = 1U;
      for (long e = a; e; e >>= 1) { if (e & 1) c *= b; b *= b; }
      return this = c;
    } else {
      return mixin("this " ~ op ~ "= ModInt(a)");
    }
  }
  ModInt inv() const {
    uint a = M, b = x; int y = 0, z = 1;
    for (; b; ) { const q = a / b; const c = a - q * b; a = b; b = c; const w = y - cast(int)(q) * z; y = z; z = w; }
    assert(a == 1); return ModInt(y);
  }
  ModInt opUnary(string op)() const {
    static if (op == "+") { return this; }
    else static if (op == "-") { ModInt a; a.x = x ? (M - x) : 0U; return a; }
    else static assert(false);
  }
  ModInt opBinary(string op, T)(T a) const { return mixin("ModInt(this) " ~ op ~ "= a"); }
  ModInt opBinaryRight(string op, T)(T a) const { return mixin("ModInt(a) " ~ op ~ "= this"); }
  bool opCast(T: bool)() const { return (x != 0U); }
  string toString() const { return x.to!string; }
}

enum MO = 998244353;
alias Mint = ModInt!MO;



void main() {
  debug {
    foreach (p; 0 .. 1 << 6) {
      foreach (q; 0 .. 1 << 6) {
        if ((p & 1) == (q & 1)) {
          auto a = new int[][](6, 6);
          foreach (x; 0 .. 6) {
            a[x][0] = (p >> x) & 1;
          }
          foreach (y; 0 .. 6) {
            a[0][y] = (q >> y) & 1;
          }
          foreach (x; 1 .. 6) foreach (y; 1 .. 6) {
            a[x][y] = a[x - 1][y - 1] ^ a[x - 1][y] ^ a[x][y - 1];
          }
          bool ok = true;
          foreach (i; 0 .. 6 + 1) foreach (j; i + 2 .. 6 + 1) {
            foreach (k; 0 .. 6 + 1) foreach (l; k + 2 .. 6 + 1) {
              if (j - i == l - k) {
                int sum;
                foreach (x; i .. j) foreach (y; k .. l) {
                  sum ^= a[x][y];
                }
                ok = ok && (sum % 2 == 0);
              }
            }
          }
          if (ok) {
            writeln(a);
          }
        }
      }
    }
  }
  
  try {
    for (; ; ) {
      const N = readInt();
      const M = readInt();
      auto X = new int[M];
      auto Y = new int[M];
      auto Z = new int[M];
      foreach (i; 0 .. M) {
        X[i] = readInt() - 1;
        Y[i] = readInt() - 1;
        Z[i] = readInt() ^ 1;
      }
      
      Mint ans;
      if (N == 1) {
        ans = Mint(2)^^(N - M);
      } else if (N == 2) {
        foreach (p; 0 .. 1 << 4) {
          if (popcnt(p) % 2 == 0) {
            bool ok = true;
            foreach (i; 0 .. M) {
              ok = ok && (((p >> (X[i] * 2 + Y[i])) & 1) == Z[i]);
            }
            if (ok) {
              ans += 1;
            }
          }
        }
      } else if (N <= 7) {
        foreach (a00; 0 .. 2) {
          foreach (p; 0 .. 1 << N) foreach (q; 0 .. 1 << N) {
            if (!(p & 1) && !(q & 1)) {
              bool even = true;
              foreach (i; 0 .. N + 1) foreach (j; i + 2 .. N + 1) {
                foreach (k; 0 .. N + 1) foreach (l; k + 2 .. N + 1) {
                  if (j - i == l - k && (j - i) % 2 != 0 && (l - k) % 2 != 0) {
                    even = even && ((a00 + popcnt((p & ((1 << j) - 1)) >> i) + popcnt((q & ((1 << l) - 1)) >> k)) % 2 == 0);
                  }
                }
              }
              if (even) {
                debug {
                  writefln("even %b %0*b %0*b", a00, N, p, N, q);
                }
                bool ok = true;
                foreach (i; 0 .. M) {
                  ok = ok && ((a00 ^ ((p >> X[i]) & 1) ^ ((q >> Y[i]) & 1)) == Z[i]);
                }
                if (ok) {
                  ans += 1;
                }
              }
            }
          }
        }
      } else {
        if (Z.all!"a == 0") {
          ans += 1;
        }
      }
      writeln(ans);
    }
  } catch (EOFException e) {
  }
}

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結果

テストケース

ソースコード