結果

問題 No.5005 3-SAT
ユーザー simansiman
提出日時 2022-05-05 19:42:50
言語 C++17(gcc12)
(gcc 12.3.0 + boost 1.87.0)
結果
AC  
実行時間 1,883 ms / 2,000 ms
コード長 4,104 bytes
コンパイル時間 1,336 ms
実行使用メモリ 4,844 KB
スコア 686
最終ジャッジ日時 2022-05-05 19:46:06
合計ジャッジ時間 195,847 ms
ジャッジサーバーID
（参考情報） 		judge12 / judge14
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ファイルパターン 結果
other AC * 100
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ソースコード

diff # 

#include <cassert>
#include <cmath>
#include <algorithm>
#include <iostream>
#include <iomanip>
#include <climits>
#include <map>
#include <queue>
#include <set>
#include <cstring>
#include <vector>

using namespace std;
typedef long long ll;

ll g_start_cycle;
const ll CYCLE_PER_SEC = 2400000000;
double TIME_LIMIT = 1.8;

unsigned long long int get_cycle() {
  unsigned int low, high;
  __asm__ volatile ("rdtsc" : "=a" (low), "=d" (high));
  return ((unsigned long long int) low) | ((unsigned long long int) high << 32);
}

double get_time(unsigned long long int begin_cycle) {
  return (double) (get_cycle() - begin_cycle) / CYCLE_PER_SEC;
}

unsigned long long xor128() {
  static unsigned long long rx = 123456789, ry = 362436069, rz = 521288629, rw = 88675123;
  unsigned long long rt = (rx ^ (rx << 11));
  rx = ry;
  ry = rz;
  rz = rw;
  return (rw = (rw ^ (rw >> 19)) ^ (rt ^ (rt >> 8)));
}

const int QUERY_NUM = 2048;
const int L = 256;
const int BIT_PTN[8][3] = {
  {0, 0, 0},
  {0, 0, 1},
  {0, 1, 0},
  {0, 1, 1},
  {1, 0, 0},
  {1, 0, 1},
  {1, 1, 0},
  {1, 1, 1},
};

struct Query {
  int a;
  int b;
  int c;
  int p;
  int q;
  int r;

  Query(int a = -1, int b = -1, int c = -1, int p = -1, int q = -1, int r = -1) {
    this->a = a;
    this->b = b;
    this->c = c;
    this->p = p;
    this->q = q;
    this->r = r;
  }
};

vector <Query> g_query_list;
vector<int> g_ids[QUERY_NUM];
int g_bit_ptn[L];

class SAT {
public:
  void init() {
    g_start_cycle = get_cycle();

    setup();
  }

  void setup() {
    vector<int> G[L];

    for (int i = 0; i < QUERY_NUM; ++i) {
      Query &query = g_query_list[i];

      G[query.a].push_back(i);
      G[query.b].push_back(i);
      G[query.c].push_back(i);
    }

    for (int i = 0; i < QUERY_NUM; ++i) {
      Query &query = g_query_list[i];
      set<int> ids;

      for (int id : G[query.a]) {
        ids.insert(id);
      }

      for (int id : G[query.b]) {
        ids.insert(id);
      }

      for (int id : G[query.c]) {
        ids.insert(id);
      }

      for (int id : ids) {
        g_ids[i].push_back(id);
      }
    }
  }

  string run() {
    string res = "";

    init();
    search_best_bit_ptn();

    return res;
  }

  vector<int> search_best_bit_ptn() {
    memset(g_bit_ptn, 0, sizeof(g_bit_ptn));

    vector<int> res(L, 0);

    double cur_time = get_time(g_start_cycle);
    int try_count = 0;

    while (cur_time < TIME_LIMIT) {
      cur_time = get_time(g_start_cycle);

      int qid = try_count % QUERY_NUM;
      search_best_ptn(qid);

      ++try_count;
    }

    int score = calc_score_full();
    fprintf(stderr, "try_count: %d, best_score: %d\n", try_count, score);

    return res;
  }

  int calc_score_full() {
    int score = 0;

    for (int qid = 0; qid < QUERY_NUM; ++qid) {
      Query &query = g_query_list[qid];

      if (g_bit_ptn[query.a] == query.p && g_bit_ptn[query.b] == query.q && g_bit_ptn[query.c] == query.r) {
        ++score;
      }
    }

    return score;
  }

  void search_best_ptn(int qid) {
    Query &q = g_query_list[qid];
    int best_score = 0;
    int best_ptn_id = 0;

    for (int pid = 0; pid < 8; ++pid) {
      g_bit_ptn[q.a] = BIT_PTN[pid][0];
      g_bit_ptn[q.b] = BIT_PTN[pid][1];
      g_bit_ptn[q.c] = BIT_PTN[pid][2];

      int score = 0;
      for (int id : g_ids[qid]) {
        Query &query = g_query_list[id];

        if (g_bit_ptn[query.a] == query.p && g_bit_ptn[query.b] == query.q && g_bit_ptn[query.c] == query.r) {
          ++score;
        }
      }

      if (best_score < score) {
        best_score = score;
        best_ptn_id = pid;
      }
    }

    g_bit_ptn[q.a] = BIT_PTN[best_ptn_id][0];
    g_bit_ptn[q.b] = BIT_PTN[best_ptn_id][1];
    g_bit_ptn[q.c] = BIT_PTN[best_ptn_id][2];
  }
};

int main() {
  int a, b, c, p, q, r;
  for (int i = 0; i < QUERY_NUM; ++i) {
    cin >> a >> b >> c >> p >> q >> r;
    g_query_list.push_back(Query(a, b, c, p, q, r));
  }

  SAT sat;
  sat.run();

  string res = "";
  for (int i = 0; i < L; ++i) {
    res += to_string(g_bit_ptn[i]);
  }

  cout << res << endl;

  return 0;
}
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