結果
問題 | No.545 ママの大事な二人の子供 |
ユーザー | gzlcp |
提出日時 | 2017-07-14 22:58:42 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 67 ms / 2,000 ms |
コード長 | 2,287 bytes |
コンパイル時間 | 1,182 ms |
コンパイル使用メモリ | 94,872 KB |
実行使用メモリ | 10,496 KB |
最終ジャッジ日時 | 2024-10-07 23:46:53 |
合計ジャッジ時間 | 2,790 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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ファイルパターン | 結果 |
---|---|
other | AC * 32 |
ソースコード
#include<iostream> #include<math.h> #include<vector> #include<algorithm> #include<queue> #include<set> #include<map> #define REP(i, n) for(long long i = 0; i < n; ++i) #define ALL(a) a.begin(), a.end() #define INF (long long)1000000000 using namespace std; typedef long long ll; typedef pair<ll, ll> P; int main() { int n; cin>>n; vector<P> a(n); REP(i, n) cin>>a[i].first>>a[i].second; int half = n/2; set<ll> aover1; set<ll> bover1; set<ll> aover2; set<ll> bover2; for(ll bit = 0; bit < (1<<half); ++bit) { ll asum = 0, bsum = 0; REP(i, half) { if((bit>>i)&1) asum += a[i].first; else bsum += a[i].second; } if(asum >= bsum) aover1.insert(asum - bsum); if(asum <= bsum) bover1.insert(bsum - asum); } for(ll bit = 0; bit < (1<<(n - half)); ++bit) { ll asum = 0, bsum = 0; REP(i, n - half) { if((bit>>i)&1) asum += a[half + i].first; else bsum += a[half + i].second; } if(asum >= bsum) aover2.insert(asum - bsum); if(asum <= bsum) bover2.insert(bsum - asum); } ll res = INF * INF; if(aover1.size() > 0 && aover2.size() > 0) res = min(res, *(aover1.begin()) + *(aover2.begin())); if(bover1.size() > 0 && bover2.size() > 0) res = min(res, *(bover1.begin()) + *(bover2.begin())); vector<ll> ao1(aover1.size()); vector<ll> ao2(aover2.size()); vector<ll> bo1(bover1.size()); vector<ll> bo2(bover2.size()); auto ite = aover1.begin(); int roc = 0; while(ite != aover1.end()) { ao1[roc] = *ite; ++ite; ++roc; } ite = aover2.begin(); roc = 0; while(ite != aover2.end()) { ao2[roc] = *ite; ++ite; ++roc; } ite = bover1.begin(); roc = 0; while(ite != bover1.end()) { bo1[roc] = *ite; ++ite; ++roc; } ite = bover2.begin(); roc = 0; while(ite != bover2.end()) { bo2[roc] = *ite; ++ite; ++roc; } roc = 0; while(roc < ao1.size()) { auto ite1 = lower_bound(ALL(bo2), ao1[roc]); if(ite1 != bo2.end()) { res = min(res, abs(ao1[roc] - *ite1)); } if(ite1 != bo2.begin()) { res = min(res, abs(ao1[roc] - *(--ite1))); } ++roc; } roc = 0; while(roc < bo1.size()) { auto ite2 = lower_bound(ALL(ao2), bo1[roc]); if(ite2 != ao2.end()) { res = min(res, abs(bo1[roc] - *ite2)); } if(ite2 != ao2.begin()) { res = min(res, abs(bo1[roc] - *(--ite2))); } ++roc; } cout<<res<<endl; }