結果

問題 No.1965 Heavier
ユーザー iiljjiiljj
提出日時 2022-06-03 23:17:52
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 154 ms / 2,000 ms
コード長 15,297 bytes
コンパイル時間 1,667 ms
コンパイル使用メモリ 141,660 KB
最終ジャッジ日時 2025-01-29 18:00:18
ジャッジサーバーID
(参考情報)
judge2 / judge3
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 26
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 #
プレゼンテーションモードにする

/* #region Head */
// #include <bits/stdc++.h>
#include <algorithm>
#include <array>
#include <bitset>
#include <cassert> // assert.h
#include <cmath> // math.h
#include <cstring>
#include <ctime>
#include <deque>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <memory>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
using namespace std;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pll = pair<ll, ll>;
template <class T> using vc = vector<T>;
template <class T> using vvc = vc<vc<T>>;
using vll = vc<ll>;
using vvll = vvc<ll>;
using vld = vc<ld>;
using vvld = vvc<ld>;
using vs = vc<string>;
using vvs = vvc<string>;
template <class T, class U> using um = unordered_map<T, U>;
template <class T> using pq = priority_queue<T>;
template <class T> using pqa = priority_queue<T, vc<T>, greater<T>>;
template <class T> using us = unordered_set<T>;
#define TREP(T, i, m, n) for (T i = (m), i##_len = (T)(n); i < i##_len; ++(i))
#define TREPM(T, i, m, n) for (T i = (m), i##_max = (T)(n); i <= i##_max; ++(i))
#define TREPR(T, i, m, n) for (T i = (m), i##_min = (T)(n); i >= i##_min; --(i))
#define TREPD(T, i, m, n, d) for (T i = (m), i##_len = (T)(n); i < i##_len; i += (d))
#define TREPMD(T, i, m, n, d) for (T i = (m), i##_max = (T)(n); i <= i##_max; i += (d))
#define REP(i, m, n) for (ll i = (m), i##_len = (ll)(n); i < i##_len; ++(i))
#define REPM(i, m, n) for (ll i = (m), i##_max = (ll)(n); i <= i##_max; ++(i))
#define REPR(i, m, n) for (ll i = (m), i##_min = (ll)(n); i >= i##_min; --(i))
#define REPD(i, m, n, d) for (ll i = (m), i##_len = (ll)(n); i < i##_len; i += (d))
#define REPMD(i, m, n, d) for (ll i = (m), i##_max = (ll)(n); i <= i##_max; i += (d))
#define REPI(itr, ds) for (auto itr = ds.begin(); itr != ds.end(); itr++)
#define REPIR(itr, ds) for (auto itr = ds.rbegin(); itr != ds.rend(); itr++)
#define ALL(x) begin(x), end(x)
#define SIZE(x) ((ll)(x).size())
#define ISIZE(x) ((int)(x).size())
#define PERM(c) \
sort(ALL(c)); \
for (bool c##p = 1; c##p; c##p = next_permutation(ALL(c)))
#define UNIQ(v) v.erase(unique(ALL(v)), v.end());
#define CEIL(a, b) (((a) + (b)-1) / (b))
#define endl '\n'
constexpr ll INF = 1'010'000'000'000'000'017LL;
constexpr int IINF = 1'000'000'007LL;
constexpr ll MOD = 1'000'000'007LL; // 1e9 + 7
// constexpr ll MOD = 998244353;
constexpr ld EPS = 1e-12;
constexpr ld PI = 3.14159265358979323846;
template <typename T> istream &operator>>(istream &is, vc<T> &vec) { // vector
for (T &x : vec) is >> x;
return is;
}
template <typename T> ostream &operator<<(ostream &os, const vc<T> &vec) { // vector (for dump)
os << "{";
REP(i, 0, SIZE(vec)) os << vec[i] << (i == i_len - 1 ? "" : ", ");
os << "}";
return os;
}
template <typename T> ostream &operator>>(ostream &os, const vc<T> &vec) { // vector (inline)
REP(i, 0, SIZE(vec)) os << vec[i] << (i == i_len - 1 ? "\n" : " ");
return os;
}
template <typename T, size_t _Nm> istream &operator>>(istream &is, array<T, _Nm> &arr) { // array
REP(i, 0, SIZE(arr)) is >> arr[i];
return is;
}
template <typename T, size_t _Nm> ostream &operator<<(ostream &os, const array<T, _Nm> &arr) { // array (for dump)
os << "{";
REP(i, 0, SIZE(arr)) os << arr[i] << (i == i_len - 1 ? "" : ", ");
os << "}";
return os;
}
template <typename T, typename U> istream &operator>>(istream &is, pair<T, U> &pair_var) { // pair
is >> pair_var.first >> pair_var.second;
return is;
}
template <typename T, typename U> ostream &operator<<(ostream &os, const pair<T, U> &pair_var) { // pair
os << "(" << pair_var.first << ", " << pair_var.second << ")";
return os;
}
// map, um, set, us
template <class T> ostream &out_iter(ostream &os, const T &map_var) {
os << "{";
REPI(itr, map_var) {
os << *itr;
auto itrcp = itr;
if (++itrcp != map_var.end()) os << ", ";
}
return os << "}";
}
template <typename T, typename U> ostream &operator<<(ostream &os, const map<T, U> &map_var) {
return out_iter(os, map_var);
}
template <typename T, typename U> ostream &operator<<(ostream &os, const um<T, U> &map_var) {
os << "{";
REPI(itr, map_var) {
auto [key, value] = *itr;
os << "(" << key << ", " << value << ")";
auto itrcp = itr;
if (++itrcp != map_var.end()) os << ", ";
}
os << "}";
return os;
}
template <typename T> ostream &operator<<(ostream &os, const set<T> &set_var) { return out_iter(os, set_var); }
template <typename T> ostream &operator<<(ostream &os, const us<T> &set_var) { return out_iter(os, set_var); }
template <typename T> ostream &operator<<(ostream &os, const pq<T> &pq_var) {
pq<T> pq_cp(pq_var);
os << "{";
if (!pq_cp.empty()) {
os << pq_cp.top(), pq_cp.pop();
while (!pq_cp.empty()) os << ", " << pq_cp.top(), pq_cp.pop();
}
return os << "}";
}
// tuple
template <size_t N = 0, bool end_line = false, typename... Args> ostream &operator<<(ostream &os, tuple<Args...> &a) {
if constexpr (N < std::tuple_size_v<tuple<Args...>>) {
os << get<N>(a);
if constexpr (N + 1 < std::tuple_size_v<tuple<Args...>>) {
os << ' ';
} else if constexpr (end_line) {
os << '\n';
}
return operator<<<N + 1, end_line>(os, a);
}
return os;
}
template <typename... Args> void print_tuple(tuple<Args...> &a) { operator<<<0, true>(cout, a); }
void pprint() { cout << endl; }
template <class Head, class... Tail> void pprint(Head &&head, Tail &&...tail) {
cout << head;
if (sizeof...(Tail) > 0) cout << ' ';
pprint(move(tail)...);
}
// dump
#define DUMPOUT cerr
void dump_func() { DUMPOUT << endl; }
template <class Head, class... Tail> void dump_func(Head &&head, Tail &&...tail) {
DUMPOUT << head;
if (sizeof...(Tail) > 0) DUMPOUT << ", ";
dump_func(move(tail)...);
}
// chmax ()
template <typename T, typename U, typename Comp = less<>> bool chmax(T &xmax, const U &x, Comp comp = {}) {
if (comp(xmax, x)) {
xmax = x;
return true;
}
return false;
}
// chmin ()
template <typename T, typename U, typename Comp = less<>> bool chmin(T &xmin, const U &x, Comp comp = {}) {
if (comp(x, xmin)) {
xmin = x;
return true;
}
return false;
}
//
#ifndef ONLINE_JUDGE
#define DEBUG_
#endif
#ifndef MYLOCAL
#undef DEBUG_
#endif
#ifdef DEBUG_
#define DEB
#define dump(...) \
DUMPOUT << " " << string(#__VA_ARGS__) << ": " \
<< "[" << to_string(__LINE__) << ":" << __FUNCTION__ << "]" << endl \
<< " ", \
dump_func(__VA_ARGS__)
#else
#define DEB if (false)
#define dump(...)
#endif
#define VAR(type, ...) \
type __VA_ARGS__; \
assert((cin >> __VA_ARGS__));
template <typename T> istream &operator,(istream &is, T &rhs) { return is >> rhs; }
template <typename T> ostream &operator,(ostream &os, const T &rhs) { return os << ' ' << rhs; }
struct AtCoderInitialize {
static constexpr int IOS_PREC = 15;
static constexpr bool AUTOFLUSH = false;
AtCoderInitialize() {
ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
cout << fixed << setprecision(IOS_PREC);
if (AUTOFLUSH) cout << unitbuf;
}
} ATCODER_INITIALIZE;
void Yn(bool p) { cout << (p ? "Yes" : "No") << endl; }
void YN(bool p) { cout << (p ? "YES" : "NO") << endl; }
template <typename T> constexpr void operator--(vc<T> &v, int) noexcept {
for (int i = 0; i < ISIZE(v); ++i) v[i]--;
}
template <typename T> constexpr void operator++(vc<T> &v, int) noexcept {
for (int i = 0; i < ISIZE(v); ++i) v[i]++;
}
/* #endregion */
// #include <atcoder/all>
// using namespace atcoder;
/* #region SegTree */
template <typename T> // T:
struct SegmentTree {
using F = function<T(T, T)>; // max
ll n; //
ll nn; //
F f; // 使 max
T ti; // f 0. (a>0 max(a,0)=max(0,a)=a)
vc<T> dat; // 1-indexed (index 1 | 2 3 | 4 5 6 7 | 8 9 10 11 12 13 14 15 | ...)
//
SegmentTree() {}
//
SegmentTree(F f, T ti) : f(f), ti(ti) {}
//
void init(ll n_) {
nn = n_;
n = 1;
while (n < n_) n <<= 1;
dat.assign(n << 1, ti);
}
//
void build(const vc<T> &v) {
ll n_ = v.size();
init(n_);
REP(i, 0, n_) dat[n + i] = v[i];
REPR(i, n - 1, 1) dat[i] = f(dat[(i << 1) | 0], dat[(i << 1) | 1]);
}
// k x
void set_val(ll k, T x) {
dat[k += n] = x;
while (k >>= 1) dat[k] = f(dat[(k << 1) | 0], dat[(k << 1) | 1]); //
}
// k
T get_val(ll k) { return dat[k + n]; }
// [a, b)
T query(ll a, ll b) {
if (a >= b) return ti;
// assert(a<b)
T vl = ti, vr = ti;
for (ll l = a + n, r = b + n; l < r; l >>= 1, r >>= 1) {
if (l & 1) vl = f(vl, dat[l++]);
if (r & 1) vr = f(dat[--r], vr);
}
return f(vl, vr);
}
//
template <typename C> int lower_bound_right(ll st, C &check, T &acc, ll k, ll l, ll r) {
if (l + 1 == r) {
acc = f(acc, dat[k]);
return check(acc) ? k - n : -1;
}
ll m = (l + r) >> 1;
if (m <= st) return lower_bound_right(st, check, acc, (k << 1) | 1, m, r);
if (st <= l && !check(f(acc, dat[k]))) {
acc = f(acc, dat[k]);
return -1;
}
ll vl = lower_bound_right(st, check, acc, (k << 1) | 0, l, m);
if (~vl) return vl;
return lower_bound_right(st, check, acc, (k << 1) | 1, m, r);
}
// check(query(st, idx+1)) idx
// query(st, idx+1) [st, idx]
// idx [st, idx]
//
template <typename C> int lower_bound_right(ll st, C &check) {
T acc = ti;
return lower_bound_right(st, check, acc, 1, 0, n);
}
// //
// // @param l
// // @param check
// // @return check(query(l,r)) r
// int max_right(int l, const function<bool(T)> &check) {
// assert(0 <= l && l <= nn);
// assert(check(ti));
// if (l == nn) return nn;
// l += n;
// T sm = ti;
// do {
// while (l % 2 == 0) l >>= 1;
// if (!check(f(sm, dat[l]))) {
// while (l < n) {
// l = (2 * l);
// if (check(f(sm, dat[l]))) {
// sm = f(sm, dat[l]);
// l++;
// }
// }
// return l - n;
// }
// sm = f(sm, dat[l]);
// l++;
// } while ((l & -l) != l);
// return nn;
// }
//
// r l [l, r)
// @param r
// @param check
// @return check(query(l,r)) l
int min_left(int r, const function<bool(T)> &check) {
assert(0 <= r && r <= nn);
assert(check(ti));
if (r == 0) return 0;
r += n;
T sm = ti;
do {
r--;
while (r > 1 && (r % 2)) r >>= 1;
if (!check(f(dat[r], sm))) {
while (r < n) {
r = (2 * r + 1);
if (check(f(dat[r], sm))) {
sm = f(dat[r], sm);
r--;
}
}
return r + 1 - n;
}
sm = f(dat[r], sm);
} while ((r & -r) != r);
return 0;
}
//
void _dump() {
REP(k, 0, nn) {
T val = dat[k + n];
cout << val << (k == nn - 1 ? '\n' : ' ');
}
}
};
/* #endregion */
// Problem
void solve() {
VAR(ll, n);
vll a(n), b(n);
cin >> a, b;
auto f = [](ll a, ll b) { return min(a, b); };
SegmentTree<ll> seg_minus(f, INF);
SegmentTree<ll> seg_plus(f, INF);
vll data_minus(n), data_plus(n);
REP(i, 0, n) {
data_minus[i] = a[i] - b[i];
data_plus[i] = a[i] + b[i];
}
seg_minus.build(data_minus);
seg_plus.build(data_plus);
vll R(n, n);
REP(l, 0, n - 1) {
auto check0 = [&](ll acc) -> bool { return acc <= a[l] - b[l]; };
auto check1 = [&](ll acc) -> bool { return acc <= a[l] + b[l]; };
ll r0 = seg_minus.lower_bound_right(l + 1, check0);
ll r1 = seg_plus.lower_bound_right(l + 1, check1);
if (r0 == -1) r0 = n;
if (r1 == -1) r1 = n;
ll r = min(r0, r1);
// dump(l, r0, r1, r);
// ans += (r - 1 - l);
R[l] = r;
}
dump(R);
SegmentTree<ll> seg(f, INF);
seg.build(R);
ll ans = 0;
REP(i, 0, n - 1) {
ll r = R[i];
ll rr = seg.query(i, r);
dump(i, r, rr);
ans += (rr - 1 - i);
}
pprint(ans);
}
// entry point
int main() {
solve();
return 0;
}
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