結果
問題 | No.1115 二つの数列 / Two Sequences |
ユーザー | hamath |
提出日時 | 2020-07-17 21:41:57 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 51 ms / 2,000 ms |
コード長 | 6,048 bytes |
コンパイル時間 | 2,667 ms |
コンパイル使用メモリ | 229,748 KB |
実行使用メモリ | 9,984 KB |
最終ジャッジ日時 | 2024-05-07 07:42:13 |
合計ジャッジ時間 | 4,516 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 | 5 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 43 ms
9,216 KB |
testcase_04 | AC | 47 ms
9,856 KB |
testcase_05 | AC | 41 ms
9,344 KB |
testcase_06 | AC | 36 ms
8,832 KB |
testcase_07 | AC | 45 ms
9,856 KB |
testcase_08 | AC | 3 ms
5,376 KB |
testcase_09 | AC | 24 ms
6,948 KB |
testcase_10 | AC | 38 ms
9,856 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 47 ms
9,856 KB |
testcase_13 | AC | 46 ms
9,984 KB |
testcase_14 | AC | 51 ms
9,984 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 1 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 1 ms
5,376 KB |
testcase_21 | AC | 1 ms
5,376 KB |
testcase_22 | AC | 1 ms
5,376 KB |
testcase_23 | AC | 5 ms
5,376 KB |
testcase_24 | AC | 17 ms
5,760 KB |
testcase_25 | AC | 36 ms
8,704 KB |
testcase_26 | AC | 9 ms
5,376 KB |
testcase_27 | AC | 22 ms
6,272 KB |
testcase_28 | AC | 27 ms
6,944 KB |
testcase_29 | AC | 37 ms
8,960 KB |
testcase_30 | AC | 44 ms
9,728 KB |
testcase_31 | AC | 12 ms
5,376 KB |
testcase_32 | AC | 8 ms
5,376 KB |
testcase_33 | AC | 34 ms
9,344 KB |
testcase_34 | AC | 1 ms
5,376 KB |
testcase_35 | AC | 2 ms
5,376 KB |
testcase_36 | AC | 1 ms
5,376 KB |
testcase_37 | AC | 1 ms
5,376 KB |
testcase_38 | AC | 2 ms
5,376 KB |
testcase_39 | AC | 1 ms
5,376 KB |
ソースコード
#ifdef LOCAL //#define _GLIBCXX_DEBUG #endif //#pragma GCC target("avx512f,avx512dq,avx512cd,avx512bw,avx512vl") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include <bits/stdc++.h> using namespace std; typedef long long ll; typedef pair<ll, ll> P; typedef pair<int, int> Pi; typedef vector<ll> Vec; typedef vector<int> Vi; typedef vector<string> Vs; typedef vector<char> Vc; typedef vector<P> VP; typedef vector<vector<ll>> VV; typedef vector<vector<int>> VVi; typedef vector<vector<char>> VVc; typedef vector<vector<vector<ll>>> VVV; typedef vector<vector<vector<vector<ll>>>> VVVV; #define REP(i, a, b) for(ll i=(a); i<(b); i++) #define PER(i, a, b) for(ll i=(a); i>=(b); i--) #define rep(i, n) REP(i, 0, n) #define per(i, n) PER(i, n, 0) const ll INF=1e18+18; const ll MOD=1000000007; #define Yes(n) cout << ((n) ? "Yes" : "No") << endl; #define YES(n) cout << ((n) ? "YES" : "NO") << endl; #define ALL(v) v.begin(), v.end() #define rALL(v) v.rbegin(), v.rend() #define pb(x) push_back(x) #define mp(a, b) make_pair(a,b) #define Each(a,b) for(auto &a :b) #define rEach(i, mp) for (auto i = mp.rbegin(); i != mp.rend(); ++i) #ifdef LOCAL #define dbg(x_) cerr << #x_ << ":" << x_ << endl; #define dbgmap(mp) cerr << #mp << ":"<<endl; for (auto i = mp.begin(); i != mp.end(); ++i) { cerr << i->first <<":"<<i->second << endl;} #define dbgset(st) cerr << #st << ":"<<endl; for (auto i = st.begin(); i != st.end(); ++i) { cerr << *i <<" ";}cerr<<endl; #define dbgarr(n,m,arr) rep(i,n){rep(j,m){cerr<<arr[i][j]<<" ";}cerr<<endl;} #define dbgdp(n,arr) rep(i,n){cerr<<arr[i]<<" ";}cerr<<endl; #else #define dbg(...) #define dbgmap(...) #define dbgset(...) #define dbgarr(...) #define dbgdp(...) #endif #define out(a) cout<<a<<endl #define out2(a,b) cout<<a<<" "<<b<<endl #define vout(v) rep(i,v.size()){cout<<v[i]<<" ";}cout<<endl #define Uniq(v) v.erase(unique(v.begin(), v.end()), v.end()) #define fi first #define se second template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return true; } return false; } template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return true; } return false; } template<typename T1, typename T2> ostream &operator<<(ostream &s, const pair<T1, T2> &p) { return s<<"("<<p.first<<", "<<p.second<<")"; } template<typename T>istream& operator>>(istream&i,vector<T>&v) {rep(j,v.size())i>>v[j];return i;} // vector template<typename T> ostream &operator<<(ostream &s, const vector<T> &v) { int len=v.size(); for(int i=0; i<len; ++i) { s<<v[i]; if(i<len-1) s<<" "; } return s; } // 2 dimentional vector template<typename T> ostream &operator<<(ostream &s, const vector<vector<T> > &vv) { int len=vv.size(); for(int i=0; i<len; ++i) { s<<vv[i]<<endl; } return s; } template< typename Monoid > struct SegmentTree { using F = function< Monoid(Monoid, Monoid) >; int sz; vector< Monoid > seg; const F f; const Monoid M1; SegmentTree(int n, const F f, const Monoid &M1) : f(f), M1(M1) { sz = 1; while(sz < n) sz <<= 1; seg.assign(2 * sz, M1); } void set(int k, const Monoid &x) { seg[k + sz] = x; } void build() { for(int k = sz - 1; k > 0; k--) { seg[k] = f(seg[2 * k + 0], seg[2 * k + 1]); } } void update(int k, const Monoid &x) { k += sz; seg[k] = x; while(k >>= 1) { seg[k] = f(seg[2 * k + 0], seg[2 * k + 1]); } } Monoid query(int a, int b) { Monoid L = M1, R = M1; for(a += sz, b += sz; a < b; a >>= 1, b >>= 1) { if(a & 1) L = f(L, seg[a++]); if(b & 1) R = f(seg[--b], R); } return f(L, R); } Monoid operator[](const int &k) const { return seg[k + sz]; } template< typename C > int find_subtree(int a, const C &check, Monoid &M, bool type) { while(a < sz) { Monoid nxt = type ? f(seg[2 * a + type], M) : f(M, seg[2 * a + type]); if(check(nxt)) a = 2 * a + type; else M = nxt, a = 2 * a + 1 - type; } return a - sz; } template< typename C > int find_first(int a, const C &check) { Monoid L = M1; if(a <= 0) { if(check(f(L, seg[1]))) return find_subtree(1, check, L, false); return -1; } int b = sz; for(a += sz, b += sz; a < b; a >>= 1, b >>= 1) { if(a & 1) { Monoid nxt = f(L, seg[a]); if(check(nxt)) return find_subtree(a, check, L, false); L = nxt; ++a; } } return -1; } template< typename C > int find_last(int b, const C &check) { Monoid R = M1; if(b >= sz) { if(check(f(seg[1], R))) return find_subtree(1, check, R, true); return -1; } int a = sz; for(b += sz; a < b; a >>= 1, b >>= 1) { if(b & 1) { Monoid nxt = f(seg[--b], R); if(check(nxt)) return find_subtree(b, check, R, true); R = nxt; } } return -1; } void debug(ll n){ Vec segv; rep(i,n){ segv.pb(query(i,i+1)); } dbg(segv); } }; int solve(){ ll n; cin>>n; Vec a(n); Vec b(n); cin>>a>>b; rep(i,n){ a[i]--; b[i]--; } Vec indb(n); rep(i,n){ indb[b[i]] = i; } Vec v(n); rep(i,n){ v[i] = indb[a[i]]; } dbg(v); VP vp(n); rep(i,n){ vp[i] = mp(v[i],i); } sort(ALL(vp)); dbg(vp); SegmentTree<ll> seg(n+1,[](ll a,ll b){return a+b;},0); seg.build(); ll ans = 0; rep(i,n){ ll ind = vp[i].se; ans += seg.query(ind+1,n+1); seg.update(ind,1); } out(ans); return 0; } int main() { cin.tie(0); ios::sync_with_stdio(false); cout<<std::setprecision(10); solve(); }