結果

問題 No.2277 Honest or Dishonest ?
ユーザー magstamagsta
提出日時 2023-04-20 09:31:48
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 155 ms / 2,000 ms
コード長 5,194 bytes
コンパイル時間 1,097 ms
コンパイル使用メモリ 75,444 KB
実行使用メモリ 21,004 KB
最終ジャッジ日時 2024-04-25 18:47:20
合計ジャッジ時間 6,408 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge1
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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
6,812 KB
testcase_01 AC 2 ms
6,944 KB
testcase_02 AC 2 ms
6,944 KB
testcase_03 AC 116 ms
15,360 KB
testcase_04 AC 119 ms
18,176 KB
testcase_05 AC 35 ms
12,672 KB
testcase_06 AC 91 ms
11,648 KB
testcase_07 AC 79 ms
12,160 KB
testcase_08 AC 30 ms
13,440 KB
testcase_09 AC 72 ms
13,824 KB
testcase_10 AC 54 ms
8,704 KB
testcase_11 AC 25 ms
6,940 KB
testcase_12 AC 40 ms
6,944 KB
testcase_13 AC 105 ms
13,440 KB
testcase_14 AC 47 ms
6,944 KB
testcase_15 AC 31 ms
11,136 KB
testcase_16 AC 73 ms
11,520 KB
testcase_17 AC 34 ms
7,296 KB
testcase_18 AC 112 ms
17,792 KB
testcase_19 AC 115 ms
17,664 KB
testcase_20 AC 87 ms
14,336 KB
testcase_21 AC 66 ms
8,448 KB
testcase_22 AC 72 ms
12,672 KB
testcase_23 AC 89 ms
8,832 KB
testcase_24 AC 63 ms
12,288 KB
testcase_25 AC 80 ms
15,616 KB
testcase_26 AC 19 ms
12,672 KB
testcase_27 AC 46 ms
7,168 KB
testcase_28 AC 33 ms
10,752 KB
testcase_29 AC 55 ms
13,056 KB
testcase_30 AC 46 ms
8,576 KB
testcase_31 AC 82 ms
12,928 KB
testcase_32 AC 45 ms
12,416 KB
testcase_33 AC 116 ms
17,152 KB
testcase_34 AC 124 ms
16,384 KB
testcase_35 AC 11 ms
8,832 KB
testcase_36 AC 68 ms
11,520 KB
testcase_37 AC 104 ms
11,776 KB
testcase_38 AC 21 ms
6,940 KB
testcase_39 AC 30 ms
6,940 KB
testcase_40 AC 12 ms
7,552 KB
testcase_41 AC 127 ms
16,896 KB
testcase_42 AC 86 ms
13,440 KB
testcase_43 AC 149 ms
20,736 KB
testcase_44 AC 141 ms
21,004 KB
testcase_45 AC 140 ms
20,724 KB
testcase_46 AC 136 ms
20,960 KB
testcase_47 AC 151 ms
20,836 KB
testcase_48 AC 151 ms
20,736 KB
testcase_49 AC 154 ms
20,736 KB
testcase_50 AC 155 ms
20,884 KB
testcase_51 AC 152 ms
20,952 KB
testcase_52 AC 144 ms
20,720 KB
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ソースコード

diff # 

#include <iostream>
#include <vector>
using namespace std;
using Graph = vector<vector<int>>;

// 深さ優先探索
int seen[100010], seen2[100010];
bool dfs(const Graph &G, const Graph &G_, const Graph &G2, const Graph &G2_, int v, bool HonLia) {
    bool flag = false; //矛盾が生じたか
    if (HonLia == true) seen[v] = 2;
    else seen[v] = 1;
    for (auto next_v : G[v]) { 
        if (seen[next_v] >= 1){
            if (HonLia == true && seen[next_v] == 1) flag = true;
            if (HonLia == false && seen[next_v] == 2) flag = true;
            continue;
        }
        if (HonLia == true) {if (dfs(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索
        else {if (dfs(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索
    }
    for (auto next_v : G_[v]) { 
        if (seen[next_v] >= 1){
            if (HonLia == true && seen[next_v] == 2) flag = true;
            if (HonLia == false && seen[next_v] == 1) flag = true;
            continue;
        }
        if (HonLia == true) {if (dfs(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索
        else {if (dfs(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索
    }
    for (auto next_v : G2[v]) { 
        if (seen[next_v] >= 1){
            if (HonLia == true && seen[next_v] == 1) flag = true;
            if (HonLia == false && seen[next_v] == 2) flag = true;
            continue;
        }
        if (HonLia == true) {if (dfs(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索
        else {if (dfs(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索
    }
    for (auto next_v : G2_[v]) { 
        if (seen[next_v] >= 1){
            if (HonLia == true && seen[next_v] == 2) flag = true;
            if (HonLia == false && seen[next_v] == 1) flag = true;
            continue;
        }
        if (HonLia == true) {if (dfs(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索
        else {if (dfs(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索
    }
    return flag;
}
bool dfs2(const Graph &G, const Graph &G_, const Graph &G2, const Graph &G2_, int v, bool HonLia) {
    bool flag = false; //矛盾が生じたか
    if (HonLia == true) seen2[v] = 2;
    else seen2[v] = 1;
    for (auto next_v : G[v]) { 
        if (seen2[next_v] >= 1){
            if (HonLia == true && seen2[next_v] == 1) flag = true;
            if (HonLia == false && seen2[next_v] == 2) flag = true;
            continue;
        }
        if (HonLia == true) {if (dfs2(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索
        else {if (dfs2(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索
    }
    for (auto next_v : G_[v]) { 
        if (seen2[next_v] >= 1){
            if (HonLia == true && seen2[next_v] == 2) flag = true;
            if (HonLia == false && seen2[next_v] == 1) flag = true;
            continue;
        }
        if (HonLia == true) {if (dfs2(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索
        else {if (dfs2(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索
    }
    for (auto next_v : G2[v]) { 
        if (seen2[next_v] >= 1){
            if (HonLia == true && seen2[next_v] == 1) flag = true;
            if (HonLia == false && seen2[next_v] == 2) flag = true;
            continue;
        }
        if (HonLia == true) {if (dfs2(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索
        else {if (dfs2(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索
    }
    for (auto next_v : G2_[v]) { 
        if (seen2[next_v] >= 1){
            if (HonLia == true && seen2[next_v] == 2) flag = true;
            if (HonLia == false && seen2[next_v] == 1) flag = true;
            continue;
        }
        if (HonLia == true) {if (dfs2(G, G_, G2, G2_, next_v, false) == true) flag = true;} // 再帰的に探索
        else {if (dfs2(G, G_, G2, G2_, next_v, true) == true) flag = true;} // 再帰的に探索
    }
    return flag;
}

int main() {
    // 頂点数と辺数
    int N, Q; cin >> N >> Q;

    // グラフ入力受取
    Graph G(N), G_(N), G2(N), G2_(N);
    for (int i = 0; i < Q; ++i) {
        int a, b, c;
        cin >> a >> b >> c;
        if (c == 0) G[a - 1].push_back(b - 1);
        if (c == 1) G_[a - 1].push_back(b - 1);
        if (c == 0) G2[b - 1].push_back(a - 1);
        if (c == 1) G2_[b - 1].push_back(a - 1);
    }

    // 全頂点が訪問済みになるまで探索
    long long ans = 1;
    for (int i = 0; i < N; i++) seen[i] = seen2[i] = 0;
    for (int v = 0; v < N; ++v) {
        if (seen[v] >= 1) continue; // v が探索済みだったらスルー
        long long count = 0;
        if (dfs(G, G_, G2, G2_, v, true) == false) count++; // v が未探索なら v を始点とした DFS を行う
        if (dfs2(G, G_, G2, G2_, v, false) == false) count++; // v が未探索なら v を始点とした DFS を行う
        ans = (ans * count) % 998244353;
    }
    cout << ans << endl;
}
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