結果
| 問題 | No.3418 【絶望】30個並列ごちゃ混ぜHit&Blowで遊ぼう! |
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2025-12-25 12:53:48 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.89.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 4,601 bytes |
| 記録 | |
| コンパイル時間 | 2,390 ms |
| コンパイル使用メモリ | 195,256 KB |
| 実行使用メモリ | 26,368 KB |
| スコア | 4,473,824 |
| 平均クエリ数 | 17987.08 |
| 最終ジャッジ日時 | 2025-12-25 12:57:58 |
| 合計ジャッジ時間 | 237,061 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| other | AC * 47 WA * 53 |
ソースコード
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <chrono>
#include <random>
#include <cmath>
using namespace std;
struct Result {
int h, b;
bool operator<(const Result& o) const {
if (h != o.h) return h < o.h;
return b < o.b;
}
bool operator==(const Result& o) const {
return h == o.h && b == o.b;
}
};
struct Guess {
int d[5];
int mask;
};
inline Result get_hb(const Guess& q, const Guess& t) {
int h = (q.d[0] == t.d[0]) + (q.d[1] == t.d[1]) + (q.d[2] == t.d[2]) + (q.d[3] == t.d[3]) + (q.d[4] == t.d[4]);
int common = __builtin_popcount(q.mask & t.mask);
return {h, common - h};
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
auto start_time = chrono::steady_clock::now();
mt19937 rng(1337);
vector<Guess> all_g;
all_g.reserve(30240);
for (int i = 0; i <= 99999; i++) {
int tmp = i, m = 0, digs[5];
bool ok = true;
for (int j = 4; j >= 0; j--) {
digs[j] = tmp % 10;
if (m & (1 << digs[j])) ok = false;
m |= (1 << digs[j]);
tmp /= 10;
}
if (ok) {
Guess g;
g.mask = m;
for (int j = 0; j < 5; j++) g.d[j] = digs[j];
all_g.push_back(g);
}
}
vector<int> candidates;
candidates.reserve(all_g.size());
for (int i = 0; i < (int)all_g.size(); i++) candidates.push_back(i);
int turn = 0;
while (true) {
int best_idx = -1;
if (turn == 0) {
for (int i = 0; i < (int)all_g.size(); i++) {
if (all_g[i].d[0] == 0 && all_g[i].d[1] == 1 && all_g[i].d[2] == 2 && all_g[i].d[3] == 3 && all_g[i].d[4] == 4) {
best_idx = i; break;
}
}
} else if (turn == 1) {
for (int i = 0; i < (int)all_g.size(); i++) {
if (all_g[i].d[0] == 5 && all_g[i].d[1] == 6 && all_g[i].d[2] == 7 && all_g[i].d[3] == 8 && all_g[i].d[4] == 9) {
best_idx = i; break;
}
}
} else {
double max_e = -1.0;
auto search_start = chrono::steady_clock::now();
int sample_n = min((int)candidates.size(), 600);
int attempts = (candidates.size() > 1000) ? 100 : 250;
for (int a = 0; a < attempts; a++) {
if (a % 10 == 0) {
auto now = chrono::steady_clock::now();
if (chrono::duration_cast<chrono::milliseconds>(now - search_start).count() > 400) break;
}
int q_idx;
if (rng() % 10 < 7 && !candidates.empty()) {
q_idx = candidates[rng() % candidates.size()];
} else {
q_idx = rng() % all_g.size();
}
int counts[6][6] = {0};
for (int i = 0; i < sample_n; i++) {
int c_idx = candidates[rng() % candidates.size()];
Result r = get_hb(all_g[q_idx], all_g[c_idx]);
counts[r.h][r.b]++;
}
double e = 0;
for (int h = 0; h <= 5; h++) {
for (int b = 0; b <= 5; b++) {
if (counts[h][b] > 0) {
double p = (double)counts[h][b] / sample_n;
e -= p * log2(p);
}
}
}
if (e > max_e) {
max_e = e;
best_idx = q_idx;
}
}
}
if (best_idx == -1) best_idx = candidates[0];
for (int i = 0; i < 5; i++) cout << all_g[best_idx].d[i];
cout << endl;
int res_counts[6][6] = {0};
bool all_cleared = false;
int first_h, first_b;
for (int i = 0; i < 30; i++) {
int h, b;
if (!(cin >> h >> b)) return 0;
if (h == -1) return 0;
if (i == 0) { first_h = h; first_b = b; }
res_counts[h][b]++;
}
if (first_h == 5 && first_b == 0) break;
vector<int> next_c;
for (int c_idx : candidates) {
Result r = get_hb(all_g[best_idx], all_g[c_idx]);
if (r.h == 5 && r.b == 0) continue;
if (res_counts[r.h][r.b] > 0) {
next_c.push_back(c_idx);
}
}
candidates = move(next_c);
turn++;
}
return 0;
}