結果
問題 | No.1045 直方体大学 |
ユーザー |
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提出日時 | 2020-05-01 22:43:46 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 63 ms / 2,000 ms |
コード長 | 1,712 bytes |
コンパイル時間 | 2,469 ms |
コンパイル使用メモリ | 208,152 KB |
最終ジャッジ日時 | 2025-01-10 05:17:43 |
ジャッジサーバーID (参考情報) |
judge4 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 17 |
ソースコード
#include<bits/stdc++.h>int main(){using namespace std;unsigned long N;cin >> N;vector<pair<pair<unsigned long, unsigned long>, unsigned long>> r(N);for(auto&& i : r){vector v{0, 0, 0};cin >> v[0] >> v[1] >> v[2];sort(v.begin(), v.end());i.first.first = v[0];i.first.second = v[1];i.second = v[2];}unsigned long ans{0};vector<unordered_map<unsigned long, unsigned long>> dp(1UL << N);const auto& enc = [](unsigned long x, unsigned long y) -> unsigned long { return x * 16777216 + y; };for(unsigned long i{0}; i < N; ++i){ans = max(ans, r[i].second);dp[1UL << i][enc(r[i].first.first, r[i].first.second)] = r[i].second;dp[1UL << i][enc(r[i].first.first, r[i].second)] = r[i].first.second;dp[1UL << i][enc(r[i].first.second, r[i].second)] = r[i].first.first;}const auto& chmax = [&ans](unsigned long& x, unsigned long a) -> unsigned long { ans = max(ans, a); return x = max(x, a); };for(unsigned long j{1}; j < 1UL << N; ++j)for(const auto& [s, h] : dp[j])for(unsigned long i{0}; i < N; ++i)if(!((j >> i) & 1)){unsigned long c{1UL << i};const auto& [x, y] = make_pair(s / 16777216, s % 16777216);if(r[i].first.first <= x && r[i].first.second <= y)chmax(dp[j | c][enc(r[i].first.first, r[i].first.second)], h + r[i].second);if(r[i].first.first <= x && r[i].second <= y)chmax(dp[j | c][enc(r[i].first.first, r[i].second)], h + r[i].first.second);if(r[i].first.second <= x && r[i].second <= y)chmax(dp[j | c][enc(r[i].first.second, r[i].second)], h + r[i].first.first);}cout << ans << endl;return 0;}