結果
問題 | No.1282 Display Elements |
ユーザー | tokusakurai |
提出日時 | 2020-11-06 21:45:05 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 182 ms / 2,000 ms |
コード長 | 5,246 bytes |
コンパイル時間 | 2,524 ms |
コンパイル使用メモリ | 208,132 KB |
最終ジャッジ日時 | 2025-01-15 20:29:09 |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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ファイルパターン | 結果 |
---|---|
other | AC * 24 |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i, n) for(int i = 0; i < n; i++) #define rep2(i, x, n) for(int i = x; i <= n; i++) #define rep3(i, x, n) for(int i = x; i >= n; i--) #define each(e, v) for(auto &e: v) #define pb push_back #define eb emplace_back #define all(x) x.begin(), x.end() #define rall(x) x.rbegin(), x.rend() #define sz(x) (int)x.size() using ll = long long; using pii = pair<int, int>; using pil = pair<int, ll>; using pli = pair<ll, int>; using pll = pair<ll, ll>; #define pq(type, name) priority_queue<type> name #define iq(type, name) priority_queue<type, vector<type>, greater<type>> name const int inf = (1<<30)-1; const ll INF = (1LL<<60)-1; const double pi = acos(-1.0); const double EPS = 1e-10; template<typename T> bool chmax(T &x, const T &y){ if(x < y) {x = y; return true;} return false; } template<typename T> bool chmin(T &x, const T &y){ if(x > y) {x = y; return true;} return false; } void in() {} template<typename Head, typename ...Tail> void in(Head &&head, Tail &&...tail){ cin >> head; in(forward<Tail>(tail)...); } void out() {cout << '\n';} template<typename Head, typename ...Tail> void out(Head &&head, Tail &&...tail){ cout << head << ' '; out(forward<Tail>(tail)...); } void outn() {} template<typename Head, typename ...Tail> void outn(Head &&head, Tail &&...tail){ cout << head << '\n'; outn(forward<Tail>(tail)...); } template<typename T, typename U> void in(pair<T, U> &p){ cin >> p.first >> p.second; } template<typename T, typename U> void out(pair<T, U> p){ cout << p.first << ' ' << p.second << '\n'; } using vi = vector<int>; using vll = vector<ll>; #define vec1(type, name, ...) vector<type> name(__VA_ARGS__) #define VEC1(type, ...) vector<type>(__VA_ARGS__) #define vec2(type, name, a, ...) vector<vector<type>> name(a, VEC1(type, __VA_ARGS__)) #define VEC2(type, a, ...) vector<vector<type>>(a, VEC1(type, __VA_ARGS__)) #define vec3(type, name, a, b, ...) vector<vector<vector<type>>> name(a, VEC2(type, b, __VA_ARGS__)) #define VEC3(type, a, b, ...) vector<vector<vector<type>>>(a, VEC2(type, b, __VA_ARGS__)) #define vec4(type, name, a, b, c, ...) vector<vector<vector<vector<type>>>> name(a, VEC3(type, b, c, __VA_ARGS__)) #define VEC4(type, a, b, c, ...) vector<vector<vector<vector<type>>>>(a, VEC3(type, b, c, __VA_ARGS__)) #define vec5(type, name, a, b, c, d, ...) vector<vector<vector<vector<vector<type>>>>> name(a, VEC4(type, b, c, d, __VA_ARGS__)) #define VEC5(type, a, b, c, d, ...) vector<vector<vector<vector<vector<type>>>>>(a, VEC4(type, b, c, d, __VA_ARGS__)) template<typename T> void vin(vector<T> &a){ rep(i, sz(a)) cin >> a[i]; } template<typename T> void vout(const vector<T> &a){ for(auto &e: a) cout << e << ' '; cout << '\n'; } template<typename T> void voutn(const vector<T> &a){ for(auto &e: a) cout << e << '\n'; } template<typename T> void unique(vector<T> &a){ sort(all(a)), a.erase(unique(all(a)), a.end()); } vector<int> iota(int n){ vector<int> ret(n); iota(all(ret), 0); return ret; } template<typename T> vector<int> iota(const vector<T> &a, bool greater = false){ vector<int> ret = iota(sz(a)); sort(all(ret), [&](int i, int j){ return (a[i] < a[j])^greater; }); return ret; } struct io_setup{ io_setup(){ ios_base::sync_with_stdio(false); cin.tie(NULL); cout << fixed << setprecision(15); } } io_setup; #define VEC(type, name, n) vector<type> name(n); vin(name) #define INT(...) int __VA_ARGS__; in(__VA_ARGS__) #define LL(...) ll __VA_ARGS__; in(__VA_ARGS__) #define CHAR(...) char __VA_ARGS__; in(__VA_ARGS__) #define STR(...) string __VA_ARGS__; in(__VA_ARGS__) #define DBL(...) double __VA_ARGS__; in(__VA_ARGS__) const int MOD = 1000000007; //const int MOD = 998244353; template<typename T> struct Binary_Indexed_Tree{ vector<T> bit; const int n; Binary_Indexed_Tree(const vector<T> &v) : n(sz(v)){ bit.resize(n+1); copy(all(v), bit.begin()+1); for(int a = 2; a <= n; a <<= 1){ for(int b = a; b <= n; b += a){ bit[b] += bit[b-a/2]; } } } void add(int i, const T &x){ for(i++; i <= n; i += (i & -i)) bit[i] += x; } void change(int i, const T&x){ add(i, x-query(i, i+1)); } T sum(int i) const{ T ret = 0; for(; i > 0; i -= (i & -i)) ret += bit[i]; return ret; } T query(int l, int r) const{ return sum(r) - sum(l); } int lower_bound(T x) const{ int ret = 0; for(int k = 31-__builtin_clz(n); k >= 0; k--){ if(ret+(1<<k) <= n && bit[ret+(1<<k)] < x) x -= bit[ret += (1<<k)]; } return ret; } int upper_bound(T x) const {return lower_bound(x+1);} }; int main(){ INT(N); VEC(int, a, N); VEC(int, b, N); sort(all(a)); map<int, int> mp; rep(i, N) mp[a[i]]++, mp[b[i]]++; int n = 0; each(e, mp) e.second = n++; rep(i, N) a[i] = mp[a[i]], b[i] = mp[b[i]]; Binary_Indexed_Tree<int> bit(vector<int>(n, 0)); ll ans = 0; rep(i, N){ bit.add(b[i], 1); ans += bit.query(0, a[i]); } out(ans); }