結果

問題 No.2277 Honest or Dishonest ?
ユーザー magstamagsta
提出日時 2023-04-19 15:23:15
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
(最新)
AC  
(最初)
実行時間 -
コード長 5,235 bytes
コンパイル時間 976 ms
コンパイル使用メモリ 73,856 KB
実行使用メモリ 20,864 KB
最終ジャッジ日時 2024-11-08 06:20:03
合計ジャッジ時間 8,176 ms
ジャッジサーバーID
(参考情報)
judge5 / judge3
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 2 ms
5,248 KB
testcase_01 AC 2 ms
5,248 KB
testcase_02 WA -
testcase_03 WA -
testcase_04 WA -
testcase_05 WA -
testcase_06 WA -
testcase_07 WA -
testcase_08 WA -
testcase_09 WA -
testcase_10 WA -
testcase_11 WA -
testcase_12 AC 42 ms
5,248 KB
testcase_13 WA -
testcase_14 AC 50 ms
5,248 KB
testcase_15 WA -
testcase_16 WA -
testcase_17 WA -
testcase_18 WA -
testcase_19 WA -
testcase_20 WA -
testcase_21 AC 81 ms
8,448 KB
testcase_22 WA -
testcase_23 AC 108 ms
8,832 KB
testcase_24 WA -
testcase_25 WA -
testcase_26 WA -
testcase_27 AC 52 ms
7,168 KB
testcase_28 WA -
testcase_29 WA -
testcase_30 AC 54 ms
8,576 KB
testcase_31 AC 103 ms
12,928 KB
testcase_32 WA -
testcase_33 WA -
testcase_34 AC 151 ms
16,384 KB
testcase_35 WA -
testcase_36 AC 86 ms
11,520 KB
testcase_37 AC 121 ms
11,520 KB
testcase_38 AC 23 ms
5,248 KB
testcase_39 AC 35 ms
5,888 KB
testcase_40 WA -
testcase_41 AC 159 ms
16,896 KB
testcase_42 AC 108 ms
13,440 KB
testcase_43 AC 181 ms
20,864 KB
testcase_44 WA -
testcase_45 WA -
testcase_46 WA -
testcase_47 WA -
testcase_48 WA -
testcase_49 AC 182 ms
20,736 KB
testcase_50 AC 184 ms
20,736 KB
testcase_51 AC 181 ms
20,736 KB
testcase_52 AC 183 ms
20,736 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 #

#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 (a == b) cout << -1 << endl;
        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) % 1000000007;
    }
    cout << ans << endl;
}
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