結果
問題 | No.1115 二つの数列 / Two Sequences |
ユーザー |
|
提出日時 | 2020-07-17 21:59:06 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 116 ms / 2,000 ms |
コード長 | 6,565 bytes |
コンパイル時間 | 1,566 ms |
コンパイル使用メモリ | 156,752 KB |
最終ジャッジ日時 | 2025-01-11 22:37:58 |
ジャッジサーバーID (参考情報) |
judge3 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 5 |
other | AC * 35 |
ソースコード
//include//------------------------------------------#include <vector>#include <list>#include <map>#include <unordered_map>#include <climits>#include <set>#include <unordered_set>#include <deque>#include <stack>#include <bitset>#include <algorithm>#include <functional>#include <numeric>#include <utility>#include <sstream>#include <iostream>#include <iomanip>#include <cstdio>#include <cmath>#include <cstdlib>#include <cctype>#include <string>#include <cstring>#include <ctime>#include <queue>#include <random>#include <chrono>#include <complex>#include <regex>#include <locale>#include <random>#include <cassert>#include <type_traits>using namespace std;// typedef//------------------------------------------typedef long long LL;typedef vector<int> VI;typedef vector<bool> VB;typedef vector<char> VC;typedef vector<double> VD;typedef vector<string> VS;typedef vector<LL> VLL;typedef vector<VI> VVI;typedef vector<VB> VVB;typedef vector<VS> VVS;typedef vector<VLL> VVLL;typedef vector<VVI> VVVI;typedef vector<VVLL> VVVLL;typedef pair<int, int> PII;typedef pair<LL, LL> PLL;typedef pair<int, string> PIS;typedef pair<string, int> PSI;typedef pair<string, string> PSS;typedef vector<PII> VPII;typedef vector<PLL> VPLL;typedef vector<VPII> VVPII;typedef vector<VPLL> VVPLL;typedef vector<VS> VVS;typedef map<int, int> MII;typedef map<LL, LL> MLL;typedef map<string, int> MSI;typedef map<int, string> MIS;// container util//------------------------------------------typedef int pInt[4];#define ALL(a) (a).begin(),(a).end()#define SZ(a) int((a).size())#define EACH(i, arr) for(typeof((arr).begin()) i=(arr).begin(); i!=(arr).end(); ++i)#define EXIST(str, e) ((str).find(e)!=(str).end())#define COUNT(arr, v) count((arr).begin(), (arr).end(), v)#define SEARCH(v, w) search((v).begin(), (v).end(), (w).begin(), (w).end())#define SORT(c) sort((c).begin(),(c).end())#define RSORT(c) sort((c).rbegin(),(c).rend())#define REVERSE(c) reverse((c).begin(), (c).end())#define ROTATE_LEFT(arr, c) rotate((arr).begin(), (arr).begin()+(c), (arr).end())#define ROTATE_RIGHT(arr, c) rotate((arr).rbegin(), (arr).rbegin() + (c), (arr).rend())#define SUMI(arr) accumulate((arr).begin(), (arr).end(), 0)#define SUMD(arr) accumulate((arr).begin(), (arr).end(), 0.)#define SUMLL(arr) accumulate((arr).begin(), (arr).end(), 0LL)#define MULD(arr) accumulate((arr).begin(), (arr).end(), 1., multiplies<double>())#define UB(arr, n) upper_bound((arr).begin(), (arr).end(), n)#define LB(arr, n) lower_bound((arr).begin(), (arr).end(), n)#define PB push_back#define MP make_pair#define ft first#define sd second// input output//------------------------------------------#define GL(s) getline(cin, (s))#define INIT() std::ios::sync_with_stdio(false);std::cin.tie(0)#define OUT(d) std::cout<<(d)#define OUT_L(d) std::cout<<(d)<<endl#define FOUT(n, data) std::cout<<std::fixed<<std::setprecision(n)<<(data)#define FOUT_L(n, data) std::cout<<std::fixed<<std::setprecision(n)<<(data)<<"\n"#define EL() printf("\n")#define SHOW_VECTOR(v) {std::cerr << #v << "\t:";for(const auto& xxx : v){std::cerr << xxx << " ";}std::cerr << "\n";}#define SHOW_MAP(v) {std::cerr << #v << endl; for(const auto& xxx: v){std::cerr << xxx.first << " " << xxx.second << "\n";}}#define Yes() printf("Yes\n")#define No() printf("No\n")#define YES() printf("YES\n")#define NO() printf("NO\n")#define Yay() printf("Yay!\n")#define Nnn() printf(":(\n")#define CE(x, y) ((x + y - 1) / (y))template<typename T1, typename T2>istream &operator>>(istream &in, pair<T1, T2> &p) {in >> p.first >> p.second;return in;}template<typename T>istream &operator>>(istream &in, vector<T> &v) {for (auto &x: v)in >> x;return in;}template<typename T1, typename T2>ostream &operator<<(ostream &out, const std::pair<T1, T2> &p) {out << "[" << p.first << ", " << p.second << "]" << "\n";return out;}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;}//repetition//------------------------------------------#define FOR(i, a, b) for(int i=(a);i<(b);++i)#define RFOR(i, a, b) for(int i=(b)-1;i>=(a);--i)#define REP(i, n) FOR(i,0,n)#define RREP(i, n) for(int i = n-1;i >= 0;i--)#define FORLL(i, a, b) for(LL i=LL(a);i<LL(b);++i)#define RFORLL(i, a, b) for(LL i=LL(b)-1;i>=LL(a);--i)#define REPLL(i, n) for(LL i=0;i<LL(n);++i)#define RREPLL(i, n) for(LL i=LL(n)-1;i>=0;--i)#define FOREACH(x, arr) for(auto &(x) : (arr))// Option + Control + K Terminal// Command + Control + K Run// Command + b EOF//------------------------------------------//------------------------------------------template<typename T>struct SegmentTree {private:using Func = function<T(T, T)>;int n;vector<T> node;T init_v;Func func;public:SegmentTree(vector<T> a, Func _func, T _init_v) {int sz = a.size();n = 1;init_v = _init_v;func = _func;while (n < sz) n *= 2;node.resize(2 * n, init_v);for (int i = 0; i < sz; i++) node[i + n - 1] = a[i];for (int i = n - 2; i >= 0; i--) node[i] = func(node[i * 2 + 1], node[i * 2 + 2]);}void update(int pos, T v) {int k = pos + n - 1;node[k] += v;while (k > 0) {k = (k - 1) / 2;node[k] = func(node[k * 2 + 1], node[k * 2 + 2]);}}T get(int pos) {int k = pos + n - 1;return node[k];}T query(int a, int b, int k = 0, int l = 0, int r = -1) {if (r < 0) r = n;if (r <= a || b <= l) return init_v;if (a <= l && r <= b)return node[k];T lv = query(a, b, k * 2 + 1, l, (l + r) / 2);T rv = query(a, b, k * 2 + 2, (l + r) / 2, r);return func(lv, rv);}};int main() {int n;cin >> n;VI a(n), b(n);cin >> a >> b;REP(i, n) a[i]--, b[i]--;SegmentTree<int> tree(VI(n), [](const auto a, const auto b) {return a + b;}, 0);VI c(n);for (int i = 0; i < n; i++) c[a[i]] = i;LL ans = 0;for (auto x: b) {int p = c[x];ans += tree.query(p, n + 1);tree.update(p, 1);}cout << ans << endl;}