結果
問題 | No.1965 Heavier |
ユーザー | first_vil |
提出日時 | 2022-06-03 22:00:48 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 195 ms / 2,000 ms |
コード長 | 5,485 bytes |
コンパイル時間 | 2,468 ms |
コンパイル使用メモリ | 204,940 KB |
最終ジャッジ日時 | 2025-01-29 17:41:51 |
ジャッジサーバーID (参考情報) |
judge2 / judge2 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 26 |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; using ld = long double; template<class T> using V = vector<T>; using VI = V<int>; using VL = V<ll>; using VS = V<string>; template<class T> using PQ = priority_queue<T, V<T>, greater<T>>; using graph = V<VI>; template<class T> using w_graph = V<V<pair<int, T>>>; #define FOR(i,a,n) for(int i=(a);i<(n);++i) #define eFOR(i,a,n) for(int i=(a);i<=(n);++i) #define rFOR(i,a,n) for(int i=(n)-1;i>=(a);--i) #define erFOR(i,a,n) for(int i=(n);i>=(a);--i) #define all(a) a.begin(),a.end() #define rall(a) a.rbegin(),a.rend() #define inside(h,w,y,x) (unsigned(y)<h&&unsigned(x)<w) #ifdef _DEBUG #define line cout << "-----------------------------\n" #define stop system("pause") #endif constexpr ll INF = 1000000000; constexpr ll LLINF = 1LL << 61; constexpr ll mod = 1000000007; constexpr ll MOD = 998244353; constexpr ld eps = 1e-10; constexpr int dy[]{ -1,0,1,0 }, dx[]{ 0,1,0,-1 }; template<class T> inline bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; }return false; } template<class T> inline bool chmin(T& a, const T& b) { if (a > b) { a = b; return true; }return false; } inline void init() { cin.tie(nullptr); cout.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(15); } template<class T> inline istream& operator>>(istream& is, V<T>& v) { for (auto& a : v)is >> a; return is; } template<class T, class U> inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; } template<class T> inline V<T> vec(size_t a) { return V<T>(a); } template<class T> inline V<T> defvec(T def, size_t a) { return V<T>(a, def); } template<class T, class... Ts> inline auto vec(size_t a, Ts... ts) { return V<decltype(vec<T>(ts...))>(a, vec<T>(ts...)); } template<class T, class... Ts> inline auto defvec(T def, size_t a, Ts... ts) { return V<decltype(defvec<T>(def, ts...))>(a, defvec<T>(def, ts...)); } template<class T> inline void print(const T& a) { cout << a << "\n"; } template<class T, class... Ts> inline void print(const T& a, const Ts&... ts) { cout << a << " "; print(ts...); } template<class T> inline void print(const V<T>& v) { for (int i = 0; i < v.size(); ++i)cout << v[i] << (i == v.size() - 1 ? "\n" : " "); } template<class T> inline void print(const V<V<T>>& v) { for (auto& a : v)print(a); } template<class T> inline constexpr const T cumsum(const V<T>& a, int l, int r) { return 0 <= l && l <= r && r < a.size() ? a[r] - (l == 0 ? 0 : a[l - 1]) : 0; }//[l,r] template<class T> inline constexpr const T min(const V<T>& v) { return *min_element(all(v)); } template<class T> inline constexpr const T max(const V<T>& v) { return *max_element(all(v)); } template<class T> inline V<T>& operator++(V<T>& v) { for (T& a : v)++a; return v; } template<class T> inline V<T>& operator--(V<T>& v) { for (T& a : v)--a; return v; } template<class Op> class SegmentTree { using T = typename Op::T; int len, n; vector<T> dat; public: SegmentTree(const int _n) : n(_n) { for (len = 1; len < n; len <<= 1); dat.resize(len << 1, Op::unit); } SegmentTree(const vector<T>& v) : n(v.size()) { for (len = 1; len < n; len <<= 1); dat.resize(len << 1, Op::unit); for (int i = 0; i < n; ++i)dat[i + len] = v[i]; for (int i = len - 1; 0 < i; --i) dat[i] = Op::merge(dat[i << 1], dat[i << 1 | 1]); } inline void update(int idx, const T a) { idx += len; dat[idx] = Op::update(dat[idx], a); for (idx >>= 1; 0 < idx; idx >>= 1) dat[idx] = Op::merge(dat[idx << 1], dat[idx << 1 | 1]); } inline T value(int l, int r) { T vl = Op::unit, vr = Op::unit; for (l += len, r += len; l < r; l >>= 1, r >>= 1) { if (l & 1)vl = Op::merge(vl, dat[l++]); if (r & 1)vr = Op::merge(dat[--r], vr); } return Op::merge(vl, vr); } inline T operator[](int idx) { return dat[idx + len]; } }; template<class Type> struct node { using T = Type; inline static T unit = INF; inline static T merge(T vl, T vr) { return min(vl, vr); } inline static T update(T vl, T vr) { return min(vl, vr); } }; template<class T> class compress { vector<T> xs; public: compress() {} compress(const vector<T>& vs) { add(vs); } inline void add(const vector<T>& vs) { copy(all(vs), back_inserter(xs)); } inline void add(const T& x) { xs.emplace_back(x); } inline void build() { sort(all(xs)); xs.erase(unique(all(xs)), xs.end()); } inline int idx(const T& x) const { return lower_bound(all(xs), x) - xs.begin(); } inline T operator[](int k) const { return xs[k]; } inline int size() const { return xs.size(); } }; #include <atcoder/modint> using mint = atcoder::modint998244353; int main() { init(); int n; cin >> n; VI a(n), b(n); cin >> a >> b; //a[j] - a[i] <= abs(b[i] - b[j]); //a[j] - a[i] <= b[i] - b[j] || a[j] - a[i] <= b[j] - b[i]; //a[j] + b[j] <= b[i] + a[i] || a[j] - b[j] <= a[i] - b[i]; ll ans = 0; compress<int> cp, cm; FOR(i, 0, n) { cp.add(a[i] + b[i]); cm.add(a[i] - b[i]); } cp.build(), cm.build(); SegmentTree<node<int>> p(cp.size()), m(cm.size()); int r = n; rFOR(i, 0, n) { chmin(r, p.value(0, cp.idx(a[i] + b[i]) + 1)); chmin(r, m.value(0, cm.idx(a[i] - b[i]) + 1)); p.update(cp.idx(a[i] + b[i]), i); m.update(cm.idx(a[i] - b[i]), i); ans += r - i - 1; } print(ans); return 0; }