結果

問題 No.2277 Honest or Dishonest ?
ユーザー tentententen
提出日時 2023-07-26 19:05:30
言語 Java21
(openjdk 21)
結果
AC  
実行時間 387 ms / 2,000 ms
コード長 3,462 bytes
コンパイル時間 5,834 ms
コンパイル使用メモリ 96,560 KB
実行使用メモリ 60,568 KB
最終ジャッジ日時 2024-04-14 08:34:04
合計ジャッジ時間 20,255 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
(要ログイン)

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 56 ms
50,632 KB
testcase_01 AC 53 ms
50,380 KB
testcase_02 AC 54 ms
50,528 KB
testcase_03 AC 327 ms
58,596 KB
testcase_04 AC 372 ms
58,884 KB
testcase_05 AC 243 ms
56,960 KB
testcase_06 AC 308 ms
58,676 KB
testcase_07 AC 287 ms
57,712 KB
testcase_08 AC 230 ms
58,980 KB
testcase_09 AC 284 ms
57,900 KB
testcase_10 AC 259 ms
56,812 KB
testcase_11 AC 173 ms
55,480 KB
testcase_12 AC 230 ms
55,656 KB
testcase_13 AC 309 ms
58,868 KB
testcase_14 AC 250 ms
56,756 KB
testcase_15 AC 216 ms
57,756 KB
testcase_16 AC 265 ms
57,412 KB
testcase_17 AC 209 ms
55,372 KB
testcase_18 AC 314 ms
58,688 KB
testcase_19 AC 334 ms
58,628 KB
testcase_20 AC 300 ms
58,772 KB
testcase_21 AC 277 ms
57,448 KB
testcase_22 AC 286 ms
57,952 KB
testcase_23 AC 291 ms
58,700 KB
testcase_24 AC 264 ms
57,756 KB
testcase_25 AC 300 ms
59,116 KB
testcase_26 AC 200 ms
60,568 KB
testcase_27 AC 217 ms
55,224 KB
testcase_28 AC 217 ms
56,064 KB
testcase_29 AC 270 ms
57,528 KB
testcase_30 AC 203 ms
55,288 KB
testcase_31 AC 271 ms
57,468 KB
testcase_32 AC 266 ms
59,464 KB
testcase_33 AC 329 ms
58,672 KB
testcase_34 AC 335 ms
58,640 KB
testcase_35 AC 173 ms
55,668 KB
testcase_36 AC 252 ms
57,516 KB
testcase_37 AC 320 ms
58,504 KB
testcase_38 AC 175 ms
54,980 KB
testcase_39 AC 199 ms
55,232 KB
testcase_40 AC 176 ms
55,652 KB
testcase_41 AC 323 ms
59,052 KB
testcase_42 AC 270 ms
57,700 KB
testcase_43 AC 337 ms
58,704 KB
testcase_44 AC 375 ms
58,812 KB
testcase_45 AC 372 ms
59,144 KB
testcase_46 AC 380 ms
58,984 KB
testcase_47 AC 365 ms
58,720 KB
testcase_48 AC 387 ms
58,996 KB
testcase_49 AC 339 ms
58,724 KB
testcase_50 AC 342 ms
58,764 KB
testcase_51 AC 345 ms
58,660 KB
testcase_52 AC 335 ms
59,004 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 java.io.*;
import java.util.*;
import java.util.stream.*;

public class Main {
    static final int MOD = 998244353;
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int q = sc.nextInt();
        UnionFindTree uft = new UnionFindTree(n);
        while (q-- > 0) {
            int a = sc.nextInt() - 1;
            int b = sc.nextInt() - 1;
            int c = sc.nextInt();
            if (uft.same(a, b)) {
                if ((uft.getCount(a) + uft.getCount(b)) % 2 != c) {
                    System.out.println(0);
                    return;
                }
            } else {
                uft.unite(a, b, c);
            }
        }
        HashSet<Integer> counts = new HashSet<>();
        for (int i = 0; i < n; i++) {
            counts.add(uft.find(i));
        }
        System.out.println(pow(2, counts.size()));
    }
    
    static long pow(long x, int p) {
        if (p == 0) {
            return 1;
        } else if (p % 2 == 0) {
            return pow(x * x % MOD, p / 2);
        } else {
            return pow(x, p - 1) * x % MOD;
        }
    }
    
    static class UnionFindTree {
        int[] parents;
        int[] counts;
        
        public UnionFindTree(int size) {
            parents = new int[size];
            counts = new int[size];
            for (int i = 0; i < size; i++) {
                parents[i] = i;
            }
        }
        
        public int find(int x) {
            if (x == parents[x]) {
                return x;
            } else {
                int p = find(parents[x]);
                counts[x] += counts[parents[x]];
                return parents[x] = p;
            }
        }
        
        public boolean same(int x, int y) {
            return find(x) == find(y);
        }
        
        public int getCount(int x) {
            find(x);
            return counts[x];
        }
        
        public void unite(int x, int y, int v) {
            int xx = find(x);
            int yy = find(y);
            if ((getCount(x) + getCount(y)) % 2 != v) {
                counts[xx] = 1;
            }
            parents[xx] = yy;
        }
    }
    
}
class Utilities {
    static String arrayToLineString(Object[] arr) {
        return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
    }
    
    static String arrayToLineString(int[] arr) {
        return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public int[] nextIntArray() throws Exception {
        return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
    
}
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