結果
問題 | No.2242 Cities and Teleporters |
ユーザー |
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提出日時 | 2023-03-10 23:06:37 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 673 ms / 3,000 ms |
コード長 | 4,423 bytes |
コンパイル時間 | 1,842 ms |
コンパイル使用メモリ | 143,904 KB |
最終ジャッジ日時 | 2025-02-11 09:08:42 |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
other | AC * 26 |
ソースコード
#include <iostream>#include <cstdio>#include <cstdlib>#include <algorithm>#include <cmath>#include <vector>#include <set>#include <map>#include <unordered_set>#include <unordered_map>#include <queue>#include <ctime>#include <cassert>#include <complex>#include <string>#include <cstring>#include <chrono>#include <random>#include <bitset>#include <fstream>#include <array>#include <functional>#include <stack>#include <memory>using namespace std;#define int long long#define ii pair <int, int>#define app push_back#define all(a) a.begin(), a.end()#define bp __builtin_popcountll#define ll long long#define mp make_pair#define x first#define y second#define Time (double)clock()/CLOCKS_PER_SEC#ifdef LOCAL#define debug(x) std::cerr << #x << ": " << x << '\n';#define debug2(x, y) std::cerr << #x << ", " << #y << ": " << x << ", " << y << '\n';#define debug3(x, y, z) std::cerr << #x << ", " << #y << ", " << #z << ": " << x << ", " << y << ", " << z << '\n';#else#define debug(x)#define debug2(x, y)#define debug3(x, y, z)#endif#define FORI(i,a,b) for (int i = (a); i < (b); ++i)#define FOR(i,a) FORI(i,0,a)#define ROFI(i,a,b) for (int i = (b)-1; i >= (a); --i)#define ROF(i,a) ROFI(i,0,a)#define rep(a) FOR(_,a)#define each(a,x) for (auto& a: x)#define FORN(i, n) FORI(i, 1, n + 1)using vi = vector<int>;template <typename T>std::istream& operator >>(std::istream& input, std::pair <T, T> & data){input >> data.x >> data.y;return input;}template <typename T>std::istream& operator >>(std::istream& input, std::vector<T>& data){for (T& x : data)input >> x;return input;}template <typename T>std::ostream& operator <<(std::ostream& output, const pair <T, T> & data){output << "(" << data.x << "," << data.y << ")";return output;}template <typename T>std::ostream& operator <<(std::ostream& output, const std::vector<T>& data){for (const T& x : data)output << x << " ";return output;}ll div_up(ll a, ll b) { return a/b+((a^b)>0&&a%b); } // divide a by b rounded upll div_down(ll a, ll b) { return a/b-((a^b)<0&&a%b); } // divide a by b rounded downll math_mod(ll a, ll b) { return a - b * div_down(a, b); }#define tcT template<class T#define tcTU tcT, class UtcT> using V = vector<T>;tcT> bool ckmin(T& a, const T& b) {return b < a ? a = b, 1 : 0;} // set a = min(a,b)tcT> bool ckmax(T& a, const T& b) {return a < b ? a = b, 1 : 0;}ll gcd(ll a, ll b) {while (b) {tie(a, b) = mp(b, a % b);}return a;}int Bit(int mask, int bit) { return (mask >> bit) & 1; }signed main() {#ifdef LOCALfreopen("input.txt", "r", stdin);#else#define endl '\n'ios_base::sync_with_stdio(0); cin.tie(0);#endifint n;cin >> n;vi h(n), t(n);cin >> h >> t;int q;cin >> q;const int LG = 20;vi c = h;each (e, t) c.app(e);sort(all(c));c.resize(unique(all(c))-c.begin());each (e, h) e = lower_bound(all(c),e) - c.begin() + 1;each (e, t) e = lower_bound(all(c),e) - c.begin() + 1;const int C = c.size() + 10;V <vi> mx(LG, vi(C, -1));for (int p = 0; p < LG; ++p) {vi pre(C, -1);if (p == 0) {FOR(j,n) {ckmax(pre[h[j]], t[j]);}for (int j = 1; j < C; ++j)ckmax(pre[j],pre[j-1]);each (v, t) {mx[p][v] = pre[v];}}else {each (v, t) {ckmax(pre[v], mx[p - 1][v]);}for (int j = 1; j < C; ++j)ckmax(pre[j],pre[j-1]);each (v, t) {if (mx[p-1][v]<0) mx[p][v] = -1;else mx[p][v] = pre[mx[p - 1][v]];}}}rep (q) {int a, b;cin >> a >> b;a--; b--;if (t[a]>=h[b]) {cout << 1 << endl;}else {a = t[a];if (mx[LG-1][a]<h[b]) {cout<<-1<<endl;continue;}int ans = 1;ROF (i, LG) {if (mx[i][a] < h[b]) {assert(mx[i][a]>a);a = mx[i][a];ans += 1 << i;}}cout << ans+1 << endl;}}}/*51 2 3 4 52 3 4 5 1101 22 11 31 41 5*/