結果
問題 | No.1282 Display Elements |
ユーザー | rniya |
提出日時 | 2020-11-06 21:39:10 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 205 ms / 2,000 ms |
コード長 | 3,590 bytes |
コンパイル時間 | 2,257 ms |
コンパイル使用メモリ | 215,964 KB |
実行使用メモリ | 15,136 KB |
最終ジャッジ日時 | 2024-07-22 12:27:55 |
合計ジャッジ時間 | 4,241 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 1 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 176 ms
14,004 KB |
testcase_16 | AC | 59 ms
7,604 KB |
testcase_17 | AC | 144 ms
12,092 KB |
testcase_18 | AC | 79 ms
8,748 KB |
testcase_19 | AC | 35 ms
5,744 KB |
testcase_20 | AC | 32 ms
5,748 KB |
testcase_21 | AC | 205 ms
14,880 KB |
testcase_22 | AC | 50 ms
5,748 KB |
testcase_23 | AC | 202 ms
15,136 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define LOCAL #pragma region Macros typedef long long ll; #define ALL(x) (x).begin(),(x).end() const long long MOD=1000000007; // const long long MOD=998244353; const int INF=1e9; const long long IINF=1e18; const int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1}; const char dir[4]={'D','R','U','L'}; template<typename T> istream &operator>>(istream &is,vector<T> &v){ for (T &x:v) is >> x; return is; } template<typename T> ostream &operator<<(ostream &os,const vector<T> &v){ for (int i=0;i<v.size();++i){ os << v[i] << (i+1==v.size()?"": " "); } return os; } template<typename T,typename U> ostream &operator<<(ostream &os,const pair<T,U> &p){ os << '(' << p.first << ',' << p.second << ')'; return os; } template<typename T,typename U> ostream &operator<<(ostream &os,const map<T,U> &m){ os << '{'; for (auto itr=m.begin();itr!=m.end();++itr){ os << '(' << itr->first << ',' << itr->second << ')'; if (++itr!=m.end()) os << ','; --itr; } os << '}'; return os; } template<typename T> ostream &operator<<(ostream &os,const set<T> &s){ os << '{'; for (auto itr=s.begin();itr!=s.end();++itr){ os << *itr; if (++itr!=s.end()) os << ','; --itr; } os << '}'; return os; } void debug_out(){cerr << '\n';} template<class Head,class... Tail> void debug_out(Head&& head,Tail&&... tail){ cerr << head; if (sizeof...(Tail)>0) cerr << ", "; debug_out(move(tail)...); } #ifdef LOCAL #define debug(...) cerr << " ";\ cerr << #__VA_ARGS__ << " :[" << __LINE__ << ":" << __FUNCTION__ << "]" << '\n';\ cerr << " ";\ debug_out(__VA_ARGS__) #else #define debug(...) 42 #endif template<typename T> T gcd(T x,T y){return y!=0?gcd(y,x%y):x;} template<typename T> T lcm(T x,T y){return x/gcd(x,y)*y;} template<class T1,class T2> inline bool chmin(T1 &a,T2 b){ if (a>b){a=b; return true;} return false; } template<class T1,class T2> inline bool chmax(T1 &a,T2 b){ if (a<b){a=b; return true;} return false; } #pragma endregion template<typename T> class BinaryIndexedTree{ T sum(int i){ T res=T(); for (;i>0;i-=(i&-i)) res+=dat[i]; return res; } public: int n; vector<T> dat; BinaryIndexedTree(int n):n(n+1),dat(n+1,0){} void add(int i,const T &x){ for (++i;i<=n;i+=(i&-i)) dat[i]+=x; } T query(int l,int r){return sum(r)-sum(l);} int lower_bound(T x) const { if (x<=0) return 0; int pos=0,k=1; while (k<n) k<<=1; for (;k>0;k>>=1){ if (pos+k<=n&&dat[pos+k]<x){ x-=dat[pos+k]; pos+=k; } } return pos; } int upper_bound(T x) const {return lower_bound(x+1);} T operator[](int i){return query(i,i+1);} }; template<typename T> map<T,int> compress(vector<T> v){ sort(v.begin(),v.end()); v.erase(unique(v.begin(),v.end()),v.end()); map<T,int> res; for (int i=0;i<v.size();++i) res[v[i]]=i; return res; } int main(){ cin.tie(0); ios::sync_with_stdio(false); int N; cin >> N; vector<int> a(N),b(N); cin >> a >> b; vector<int> c; for (int x:a) c.emplace_back(x); for (int x:b) c.emplace_back(x); map<int,int> mp=compress(c); for (int i=0;i<N;++i) a[i]=mp[a[i]]; for (int i=0;i<N;++i) b[i]=mp[b[i]]; sort(ALL(a)); int sz=mp.size(); BinaryIndexedTree<int> BIT(sz+1); ll ans=0; for (int i=0;i<N;++i){ BIT.add(b[i],1); ans+=BIT.query(0,a[i]); } cout << ans << '\n'; }