結果

問題 No.2277 Honest or Dishonest ?
ユーザー 👑 hos.lyrichos.lyric
提出日時 2023-04-21 22:32:44
言語 D
(dmd 2.106.1)
結果
AC  
実行時間 79 ms / 2,000 ms
コード長 4,208 bytes
コンパイル時間 4,549 ms
コンパイル使用メモリ 147,576 KB
実行使用メモリ 7,728 KB
最終ジャッジ日時 2023-09-04 20:10:30
合計ジャッジ時間 12,415 ms
ジャッジサーバーID
（参考情報） 		judge13 / judge12
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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
4,384 KB
testcase_01 AC 2 ms
4,384 KB
testcase_02 AC 1 ms
4,380 KB
testcase_03 AC 68 ms
5,632 KB
testcase_04 AC 65 ms
5,948 KB
testcase_05 AC 21 ms
5,140 KB
testcase_06 AC 61 ms
5,448 KB
testcase_07 AC 48 ms
5,108 KB
testcase_08 AC 16 ms
5,216 KB
testcase_09 AC 41 ms
6,348 KB
testcase_10 AC 39 ms
4,808 KB
testcase_11 AC 19 ms
4,536 KB
testcase_12 AC 37 ms
6,396 KB
testcase_13 AC 67 ms
6,192 KB
testcase_14 AC 48 ms
4,840 KB
testcase_15 AC 18 ms
6,368 KB
testcase_16 AC 47 ms
5,148 KB
testcase_17 AC 25 ms
6,636 KB
testcase_18 AC 60 ms
5,684 KB
testcase_19 AC 62 ms
6,460 KB
testcase_20 AC 52 ms
6,948 KB
testcase_21 AC 52 ms
5,128 KB
testcase_22 AC 44 ms
5,124 KB
testcase_23 AC 72 ms
6,988 KB
testcase_24 AC 39 ms
5,160 KB
testcase_25 AC 45 ms
6,488 KB
testcase_26 AC 9 ms
4,808 KB
testcase_27 AC 35 ms
4,852 KB
testcase_28 AC 20 ms
4,900 KB
testcase_29 AC 31 ms
5,156 KB
testcase_30 AC 31 ms
4,880 KB
testcase_31 AC 51 ms
5,476 KB
testcase_32 AC 28 ms
6,640 KB
testcase_33 AC 62 ms
6,620 KB
testcase_34 AC 71 ms
5,656 KB
testcase_35 AC 7 ms
4,380 KB
testcase_36 AC 45 ms
6,876 KB
testcase_37 AC 73 ms
7,188 KB
testcase_38 AC 19 ms
4,772 KB
testcase_39 AC 24 ms
4,544 KB
testcase_40 AC 7 ms
4,556 KB
testcase_41 AC 75 ms
6,036 KB
testcase_42 AC 53 ms
6,128 KB
testcase_43 AC 75 ms
6,648 KB
testcase_44 AC 78 ms
6,900 KB
testcase_45 AC 78 ms
7,488 KB
testcase_46 AC 78 ms
6,592 KB
testcase_47 AC 77 ms
6,524 KB
testcase_48 AC 79 ms
7,120 KB
testcase_49 AC 77 ms
7,184 KB
testcase_50 AC 76 ms
6,264 KB
testcase_51 AC 76 ms
7,728 KB
testcase_52 AC 75 ms
6,668 KB
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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; }

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 = cast(uint)(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)(inout(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;


int root(int[] uf, int u) {
  return (uf[u] < 0) ? u : (uf[u] = uf.root(uf[u]));
}
bool connect(int[] uf, int u, int v) {
  u = uf.root(u);
  v = uf.root(v);
  if (u == v) return false;
  if (uf[u] > uf[v]) swap(u, v);
  uf[u] += uf[v];
  uf[v] = u;
  return true;
}


void main() {
  try {
    for (; ; ) {
      const N = readInt;
      const M = readInt;
      auto A = new int[M];
      auto B = new int[M];
      auto C = new int[M];
      foreach (i; 0 .. M) {
        A[i] = readInt - 1;
        B[i] = readInt - 1;
        C[i] = readInt;
      }
      
      auto uf = new int[N << 1];
      uf[] = -1;
      foreach (i; 0 .. M) {
        uf.connect(A[i] << 1 | 0, B[i] << 1 | (0 ^ C[i]));
        uf.connect(A[i] << 1 | 1, B[i] << 1 | (1 ^ C[i]));
      }
      bool ok = true;
      foreach (u; 0 .. N) {
        ok = ok && (uf.root(u << 1) != uf.root(u << 1 | 1));
      }
      
      Mint ans;
      if (ok) {
        int numComps;
        foreach (r; 0 .. N << 1) if (uf[r] < 0) {
          ++numComps;
        }
        numComps /= 2;
        ans = Mint(2)^^numComps;
      }
      writeln(ans);
    }
  } catch (EOFException e) {
  }
}
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