AtCoder Beginner Contest 002

Submission #1364491

Source codeソースコード

#include <iostream>
#include <vector>
#include <set>

using namespace std;

/*
   指定された人数の議員の全パターンを調べる
   */

int result = 0;
set<pair<int, int>> rels;

void dfs(int index, int rest, vector<int> giins) {
  if (rest == 0) {
    // チェック処理
    for (int ga : giins) {
      for (int gb : giins) {
        if (ga != gb && rels.count(make_pair(ga, gb)) == 0) {
          return; // 必要な関係がなかったりしたら終了
        }
      }
    }

    // 必要な関係が全部あるならばresultを更新
    int count = giins.size();
    if (count > result) {
      result = count;
    }
    return;
  }

  int next_index = index + 1;
  int next_rest = rest - 1;
  dfs(next_index, next_rest, giins); // index の議員を含めない場合
  giins.push_back(index);
  dfs(next_index, next_rest, giins); // index の議員を含める場合
}

int main() {
  int n, m;
  cin >> n >> m;

  if (m == 0) {
    cout << 1 << endl;
    exit(0);
  }

  // 関係の読み取り
  for (int i = 0; i < m; i++) {
    int x, y;
    cin >> x >> y;
    rels.insert(make_pair(x - 1, y -1));
    rels.insert(make_pair(y - 1, x -1));
  }

  // 深さ優先探索で全部調べる
  vector<int> giins;
  dfs(0, n, giins);

  cout << result << endl;
}

Submission

Task問題 D - 派閥
User nameユーザ名 しふー
Created time投稿日時
Language言語 C++14 (GCC 5.4.1)
Status状態 AC
Score得点 100
Source lengthソースコード長 1356 Byte
File nameファイル名
Exec time実行時間 5 ms
Memory usageメモリ使用量 256 KB

Test case

Set

Set name Score得点 / Max score Cases
all 100 / 100 00_sample_01.txt,00_sample_02.txt,00_sample_03.txt,00_sample_04.txt,test_01.txt,test_02.txt,test_03.txt,test_04.txt,test_05.txt,test_06.txt,test_07.txt,test_08.txt,test_09.txt,test_10.txt,test_11.txt,test_12.txt,test_13.txt,test_14.txt,test_15.txt,test_16.txt,test_17.txt,test_18.txt,test_19.txt,test_20.txt,test_21.txt,test_22.txt,test_23.txt,test_24.txt,test_25.txt,test_26.txt,test_27.txt,test_28.txt,test_29.txt,test_30.txt,test_31.txt,test_32.txt,test_33.txt,test_34.txt,test_35.txt,test_36.txt,test_37.txt,test_38.txt,test_39.txt,test_40.txt,test_41.txt,test_42.txt,test_43.txt,test_44.txt,test_45.txt,test_46.txt,test_47.txt,test_48.txt,test_49.txt,test_50.txt,test_51.txt,test_52.txt,test_53.txt,test_54.txt,test_55.txt,test_56.txt,test_57.txt,test_58.txt,test_59.txt,test_60.txt,test_61.txt,test_62.txt,test_63.txt,test_64.txt,test_65.txt,test_66.txt,test_67.txt,test_68.txt,test_69.txt,test_70.txt

Test case

Case name Status状態 Exec time実行時間 Memory usageメモリ使用量
00_sample_01.txt AC 1 ms 256 KB
00_sample_02.txt AC 1 ms 256 KB
00_sample_03.txt AC 1 ms 256 KB
00_sample_04.txt AC 1 ms 256 KB
test_01.txt AC 1 ms 256 KB
test_02.txt AC 1 ms 256 KB
test_03.txt AC 1 ms 256 KB
test_04.txt AC 1 ms 256 KB
test_05.txt AC 1 ms 256 KB
test_06.txt AC 1 ms 256 KB
test_07.txt AC 1 ms 256 KB
test_08.txt AC 1 ms 256 KB
test_09.txt AC 1 ms 256 KB
test_10.txt AC 1 ms 256 KB
test_11.txt AC 2 ms 256 KB
test_12.txt AC 2 ms 256 KB
test_13.txt AC 1 ms 256 KB
test_14.txt AC 1 ms 256 KB
test_15.txt AC 1 ms 256 KB
test_16.txt AC 1 ms 256 KB
test_17.txt AC 2 ms 256 KB
test_18.txt AC 2 ms 256 KB
test_19.txt AC 2 ms 256 KB
test_20.txt AC 4 ms 256 KB
test_21.txt AC 2 ms 256 KB
test_22.txt AC 3 ms 256 KB
test_23.txt AC 3 ms 256 KB
test_24.txt AC 5 ms 256 KB
test_25.txt AC 1 ms 256 KB
test_26.txt AC 2 ms 256 KB
test_27.txt AC 1 ms 256 KB
test_28.txt AC 1 ms 256 KB
test_29.txt AC 1 ms 256 KB
test_30.txt AC 2 ms 256 KB
test_31.txt AC 3 ms 256 KB
test_32.txt AC 2 ms 256 KB
test_33.txt AC 3 ms 256 KB
test_34.txt AC 2 ms 256 KB
test_35.txt AC 3 ms 256 KB
test_36.txt AC 5 ms 256 KB
test_37.txt AC 2 ms 256 KB
test_38.txt AC 4 ms 256 KB
test_39.txt AC 3 ms 256 KB
test_40.txt AC 2 ms 256 KB
test_41.txt AC 4 ms 256 KB
test_42.txt AC 5 ms 256 KB
test_43.txt AC 2 ms 256 KB
test_44.txt AC 2 ms 256 KB
test_45.txt AC 2 ms 256 KB
test_46.txt AC 3 ms 256 KB
test_47.txt AC 3 ms 256 KB
test_48.txt AC 5 ms 256 KB
test_49.txt AC 2 ms 256 KB
test_50.txt AC 2 ms 256 KB
test_51.txt AC 2 ms 256 KB
test_52.txt AC 2 ms 256 KB
test_53.txt AC 2 ms 256 KB
test_54.txt AC 2 ms 256 KB
test_55.txt AC 2 ms 256 KB
test_56.txt AC 2 ms 256 KB
test_57.txt AC 2 ms 256 KB
test_58.txt AC 3 ms 256 KB
test_59.txt AC 3 ms 256 KB
test_60.txt AC 5 ms 256 KB
test_61.txt AC 5 ms 256 KB
test_62.txt AC 1 ms 256 KB
test_63.txt AC 2 ms 256 KB
test_64.txt AC 2 ms 256 KB
test_65.txt AC 2 ms 256 KB
test_66.txt AC 2 ms 256 KB
test_67.txt AC 2 ms 256 KB
test_68.txt AC 2 ms 256 KB
test_69.txt AC 2 ms 256 KB
test_70.txt AC 2 ms 256 KB