結果

問題 No.1282 Display Elements
ユーザー hamamuhamamu
提出日時 2020-11-06 22:18:27
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 203 ms / 2,000 ms
コード長 7,214 bytes
コンパイル時間 2,182 ms
コンパイル使用メモリ 214,380 KB
実行使用メモリ 22,328 KB
最終ジャッジ日時 2023-09-29 18:59:47
合計ジャッジ時間 4,321 ms
ジャッジサーバーID
(参考情報)
judge13 / judge12
このコードへのチャレンジ(β)

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
4,376 KB
testcase_01 AC 2 ms
4,376 KB
testcase_02 AC 1 ms
4,376 KB
testcase_03 AC 2 ms
4,376 KB
testcase_04 AC 1 ms
4,376 KB
testcase_05 AC 1 ms
4,380 KB
testcase_06 AC 1 ms
4,376 KB
testcase_07 AC 1 ms
4,376 KB
testcase_08 AC 2 ms
4,380 KB
testcase_09 AC 2 ms
4,380 KB
testcase_10 AC 1 ms
4,376 KB
testcase_11 AC 1 ms
4,376 KB
testcase_12 AC 2 ms
4,380 KB
testcase_13 AC 2 ms
4,376 KB
testcase_14 AC 2 ms
4,376 KB
testcase_15 AC 177 ms
20,616 KB
testcase_16 AC 62 ms
10,152 KB
testcase_17 AC 144 ms
18,156 KB
testcase_18 AC 81 ms
12,064 KB
testcase_19 AC 31 ms
6,404 KB
testcase_20 AC 30 ms
6,204 KB
testcase_21 AC 199 ms
22,328 KB
testcase_22 AC 42 ms
6,140 KB
testcase_23 AC 203 ms
22,088 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include "bits/stdc++.h"
using namespace std;
using     ll=long long;     using   dd=double;     
using    vll=vector<   ll>; using  vdd=vector< dd>;
using   vvll=vector<  vll>; using vvdd=vector<vdd>;
using  vvvll=vector< vvll>;
using vvvvll=vector<vvvll>;
using   pll=pair<ll,ll>;  using   tll=tuple<ll,ll,ll>; using   qll=tuple<ll,ll,ll,ll>;
using  vpll=vector< pll>; using  vtll=vector< tll>;    using  vqll=vector< qll>;
using vvpll=vector<vpll>; using vvtll=vector<vtll>;    using vvqll=vector<vqll>;
constexpr ll INF = 1LL << 60;
struct Fast{ Fast(){ cin.tie(0); ios::sync_with_stdio(false); cout<<fixed<<setprecision(numeric_limits<double>::max_digits10); } } fast;
#define REPS(i, S, E) for (ll i = (S); i <= (E); i++)
#define REP(i, N) REPS(i, 0, (N)-1)
#define DEPS(i, S, E) for (ll i = (E); i >= (S); i--)
#define DEP(i, N) DEPS(i, 0, (N)-1)
#define rep(i, S, E)  for (ll i = (S); i <= (E); i++)
#define dep(i, E, S)  for (ll i = (E); i >= (S); i--)
#define each(e, v) for (auto&& e : v)
#define ALL(v) (v).begin(), (v).end()
#define RALL(v) (v).rbegin(), (v).rend()
template<class T> inline bool chmax(T &a, T b) { if (a < b) { a = b; return true; }return false; }
template<class T> inline bool chmin(T &a, T b) { if (a > b) { a = b; return true; }return false; }
template<class T> inline T MaxE(vector<T>&v,ll S,ll E){ T m=v[S]; rep(i,S,E)chmax(m,v[i]); return m; }
template<class T> inline T MinE(vector<T>&v,ll S,ll E){ T m=v[S]; rep(i,S,E)chmin(m,v[i]); return m; }
template<class T> inline T MaxE(vector<T> &v) { return MaxE(v,0,(ll)v.size()-1); }
template<class T> inline T MinE(vector<T> &v) { return MinE(v,0,(ll)v.size()-1); }
template<class T> inline T Sum(vector<T> &v,ll S,ll E){ T s=T(); rep(i,S,E)s+=v[i]; return s; }
template<class T> inline T Sum(vector<T> &v) { return Sum(v,0,v.size()-1); }
template<class T> inline ll sz(T &v){ return (ll)v.size(); }
inline ll CEIL(ll a,ll b){ return (a<0) ? -(-a/b) : (a+b-1)/b; }
inline ll FLOOR(ll a,ll b){ return -CEIL(-a,b); }

template<ll MOD> struct mll_{
	ll val;
	mll_(ll v = 0): val(v % MOD){ if (val < 0) val += MOD; }
	mll_ operator - () const { return -val; }
	mll_ operator + (const mll_ &b) const { return val + b.val; }
	mll_ operator - (const mll_ &b) const { return val - b.val; }
	mll_ operator * (const mll_ &b) const { return val * b.val; }
	mll_ operator / (const mll_ &b) const { return mll_(*this) /= b; }
	mll_ operator + (ll b) const { return *this + mll_(b); }
	mll_ operator - (ll b) const { return *this - mll_(b); }
	mll_ operator * (ll b) const { return *this * mll_(b); }
	friend mll_ operator + (ll a,const mll_ &b) { return b + a; }
	friend mll_ operator - (ll a,const mll_ &b) { return -b + a; }
	friend mll_ operator * (ll a,const mll_ &b) { return b * a; }
	friend mll_ operator / (ll a,const mll_ &b) { return mll_(a)/b; }
	mll_ &operator += (const mll_ &b) { val=(val+b.val)%MOD; return *this; }
	mll_ &operator -= (const mll_ &b) { val=(val+MOD-b.val)%MOD; return *this; }
	mll_ &operator *= (const mll_ &b) { val=(val*b.val)%MOD; return *this; }
	mll_ &operator /= (const mll_ &b) {
		ll c=b.val,d=MOD,u=1,v=0;
		while (d){
			ll t = c / d;
			c -= t * d; swap(c,d);
			u -= t * v; swap(u,v);
		}
		val = val * u % MOD;
		if (val < 0) val += MOD;
		return *this;
	}
	mll_ &operator += (ll b) { return *this += mll_(b); }
	mll_ &operator -= (ll b) { return *this -= mll_(b); }
	mll_ &operator *= (ll b) { return *this *= mll_(b); }
	mll_ &operator /= (ll b) { return *this /= mll_(b); }
	bool operator == (const mll_ &b) const { return val == b.val; }
	bool operator != (const mll_ &b) const { return val != b.val; }
	bool operator == (ll b) const { return *this == mll_(b); }
	bool operator != (ll b) const { return *this != mll_(b); }
	friend bool operator == (ll a,const mll_ &b) { return mll_(a) == b.val; }
	friend bool operator != (ll a,const mll_ &b) { return mll_(a) != b.val; }
	friend ostream &operator << (ostream &os,const mll_ &a) { return os << a.val; }
	friend istream &operator >> (istream &is,mll_ &a) { return is >> a.val; }
	static mll_ Combination(ll a,ll b){
		chmin(b,a-b);
		if (b<0) return mll_(0);
		mll_ c = 1;
		rep(i,0,b-1) c *= a-i;
		rep(i,0,b-1) c /= i+1;
		return c;
	}
};
using mll = mll_<1000000007LL>;
using vmll    = std::vector<mll>;
using vvmll   = std::vector<vmll>;
using vvvmll  = std::vector<vvmll>;
using vvvvmll = std::vector<vvvmll>;



#if 0
#include <atcoder/all>
using namespace atcoder;
#endif


template <class T> struct CumulativeSumG{
	ll s=0,e=-1;  vector<T> c;
	CumulativeSumG(){};
	CumulativeSumG(vector<T> &v): e(v.size()-1),c(e+2) { Ini(v); }
	CumulativeSumG(vector<T> &v,ll S,ll E): s(S),e(E),c(e-s+2){ Ini(v); }
	void init(vector<T> &v){ e=v.size()-1; c.resize(e+2); Ini(v); }
	void init(vector<T> &v,ll S,ll E){ s=S; e=E; c.resize(e-s+2); Ini(v); }
	void add(T x) { e++; c.push_back(c.back() + x); }
	T operator()(ll l,ll r){ return c[max(min(e,r),s-1)+1-s]-c[min(max(s,l),e+1)-s]; }
	void Ini(vector<T> &v) { rep(i,s,e) c[i+1-s] = c[i-s] + v[i]; }
};
using CumulativeSum = CumulativeSumG<ll>;
/*
CumulativeSum cm(ini); //iniの累積和準備
CumulativeSum cm(ini,4,10); //ini[4]~ini[10]の累積和準備
cm.add(93); //末尾に93を追加準備(上の続きならini[11]=93と見なして累積和準備)
ll sm=cm(5,9); //ini[5]~ini[9]の和
ll sm=cm(4,2); //定義外は0埋めと見なす&逆順は正負反転するだけで落ちない
*/

struct coordinateCompression{
	map<ll, ll> val2idx;
	vll idx2val;
	coordinateCompression(){}
	void add(ll val){
		val2idx[val]=0;
	}
	void add(vll v){
		each(e, v) val2idx[e]=0;
	}
	void compress(){
		ll cnt=0;
		each(e, val2idx){
			idx2val.push_back(e.first);
			e.second=cnt++;
		}
	}
	ll size(){
		return (ll)idx2val.size();
	}
	ll v2i(ll v){ return val2idx[v]; }
	ll i2v(ll i){ return idx2val[i]; }
};

template <class T> struct BIT_{
	vector<T> v; ll N;
	BIT_(){}
	BIT_(ll N) { Init(N); }
	void Init(ll N) { v.resize(N+1); this->N = N; }
	void add(ll i, T x) { for (i++; i<=N; i+=i&(-i)) v[i]+=x; }
	T sum(ll i) { T s=0;  for (i++; i>0; i-=i&(-i)) s+=v[i];  return s; }
	T sum(ll i, ll j) { return sum(j)-sum(i-1); }
	ll lower_bound(T s){
		ll i=0,l=1;  while (l<N) l<<=1;
		for(; l>0; l>>=1) if(i+l<=N && v[i+l]<s) s-=v[i+=l];
		return i;
	}
	void Dump() { rep(i,0,N-1) cerr<<setw(3)<< i <<" "<<setw(5)<< sum(i,i) <<'\n'; }
};
using BIT = BIT_<ll>;


void solve()
{
	ll n;  cin >> n;
	vector<ll> a(n);  rep(i,0,n-1){ ll a_; cin>>a_; a[i]=a_; }
	vector<ll> b(n);  rep(i,0,n-1){ ll b_; cin>>b_; b[i]=b_; }
	sort(ALL(a));
	CumulativeSum cm(b);

	coordinateCompression co;
	co.add(a);
	co.add(b);
	co.compress();
	ll m=co.size();

	BIT bit(m);

	ll ans=0;
	rep(i,0,n-1){
		ll aa = a[i];
		ll bb = b[i];
		ll aaa = co.val2idx[aa];
		ll bbb = co.val2idx[bb];
		bit.add(bbb,1);
		ll nm=bit.sum(aaa-1);
		ans+=nm;
	}
	cout << ans << '\n';

}

int main(){
#if 1
	solve();
	//cin2solve();
	//generand();
#else
	ll t;  cin >> t;
	rep(i, 0, t-1){
		solve();
		//cin2solve();
	}
#endif
	return 0;
}
0