結果

問題 No.2277 Honest or Dishonest ?
ユーザー magstamagsta
提出日時 2023-04-20 19:32:48
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 278 ms / 2,000 ms
コード長 5,741 bytes
コンパイル時間 7,493 ms
コンパイル使用メモリ 231,916 KB
実行使用メモリ 31,188 KB
最終ジャッジ日時 2024-11-08 06:21:45
合計ジャッジ時間 16,784 ms
ジャッジサーバーID
(参考情報)
judge5 / judge1
このコードへのチャレンジ
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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
5,248 KB
testcase_01 AC 2 ms
5,248 KB
testcase_02 AC 2 ms
5,248 KB
testcase_03 AC 222 ms
24,708 KB
testcase_04 AC 222 ms
27,204 KB
testcase_05 AC 57 ms
15,340 KB
testcase_06 AC 178 ms
21,208 KB
testcase_07 AC 136 ms
18,076 KB
testcase_08 AC 42 ms
15,328 KB
testcase_09 AC 119 ms
19,040 KB
testcase_10 AC 92 ms
13,688 KB
testcase_11 AC 40 ms
8,788 KB
testcase_12 AC 75 ms
10,740 KB
testcase_13 AC 204 ms
22,420 KB
testcase_14 AC 97 ms
10,684 KB
testcase_15 AC 44 ms
13,532 KB
testcase_16 AC 129 ms
17,836 KB
testcase_17 AC 56 ms
10,296 KB
testcase_18 AC 189 ms
25,424 KB
testcase_19 AC 205 ms
27,136 KB
testcase_20 AC 155 ms
20,960 KB
testcase_21 AC 127 ms
15,212 KB
testcase_22 AC 123 ms
18,352 KB
testcase_23 AC 185 ms
19,224 KB
testcase_24 AC 111 ms
17,192 KB
testcase_25 AC 139 ms
21,232 KB
testcase_26 AC 25 ms
13,568 KB
testcase_27 AC 82 ms
12,168 KB
testcase_28 AC 49 ms
13,040 KB
testcase_29 AC 83 ms
17,164 KB
testcase_30 AC 78 ms
12,672 KB
testcase_31 AC 155 ms
19,460 KB
testcase_32 AC 72 ms
15,964 KB
testcase_33 AC 196 ms
26,432 KB
testcase_34 AC 233 ms
25,972 KB
testcase_35 AC 15 ms
9,484 KB
testcase_36 AC 123 ms
17,388 KB
testcase_37 AC 200 ms
21,200 KB
testcase_38 AC 36 ms
7,388 KB
testcase_39 AC 52 ms
9,188 KB
testcase_40 AC 15 ms
8,288 KB
testcase_41 AC 240 ms
27,112 KB
testcase_42 AC 156 ms
20,404 KB
testcase_43 AC 267 ms
31,072 KB
testcase_44 AC 265 ms
31,060 KB
testcase_45 AC 267 ms
31,060 KB
testcase_46 AC 270 ms
31,068 KB
testcase_47 AC 268 ms
30,940 KB
testcase_48 AC 268 ms
31,068 KB
testcase_49 AC 274 ms
31,068 KB
testcase_50 AC 274 ms
31,072 KB
testcase_51 AC 278 ms
31,064 KB
testcase_52 AC 274 ms
31,188 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>
#include <set>
#include "testlib.h"
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() {
    registerValidation();
    // 頂点数と辺数
    int N = inf.readInt(2, 100000, "N");
    inf.readSpace();
    int Q = inf.readInt(1, 100000, "Q");
    inf.readEoln();

    set<pair<int, int>> Set;

    // 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 = inf.readInt(1, N, "a");
        inf.readSpace();
        int b = inf.readInt(1, N, "b");
        inf.readSpace();
        int c = inf.readInt(0, 1, "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);
        if (*(Set.lower_bound(make_pair(a, b))) == make_pair(a, b)) cout << -1 << endl;
        Set.insert(make_pair(a, b));
        inf.readEoln();
    }
    inf.readEof();

    // 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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