結果
| 問題 |
No.2242 Cities and Teleporters
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2023-03-10 22:29:43 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 4,132 bytes |
| コンパイル時間 | 2,293 ms |
| コンパイル使用メモリ | 215,664 KB |
| 最終ジャッジ日時 | 2025-02-11 08:41:57 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge3 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| other | AC * 8 WA * 18 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
#define SZ(x) (int) (x).size()
#define REP(i, n) for(int i = 0; i < (n); i++)
#define FOR(i, a, b) for(auto i = (a); i < (b); i++)
#define For(i, a, b, c) \
for(auto i = (a); i != (b); i += (c))
#define REPR(i, n) for(auto i = (n) -1; i >= 0; i--)
#define ALL(s) (s).begin(), (s).end()
#define so(V) sort(ALL(V))
#define rev(V) reverse(ALL(V))
#define uni(v) v.erase(unique(ALL(v)), (v).end())
#define eb emplace_back
typedef unsigned long long ull;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<bool> vb;
typedef vector<vi> vvi;
typedef vector<vll> vvll;
typedef pair<int, int> PI;
typedef pair<ll, ll> PL;
const double EPS = 1e-6;
const int MOD = 1e9 + 7;
const int INF = (1 << 30);
const ll LINF = 1e18;
const double math_PI = acos(-1);
template<typename T>
vector<T> make_v(size_t a) {
return vector<T>(a);
}
template<typename T, typename... Ts>
auto make_v(size_t a, Ts... ts) {
return vector<decltype(make_v<T>(ts...))>(
a, make_v<T>(ts...));
}
template<typename T, typename V>
typename enable_if<is_class<T>::value == 0>::type fill_v(
T& t, const V& v) {
t = v;
}
template<typename T, typename V>
typename enable_if<is_class<T>::value != 0>::type fill_v(
T& t, const V& v) {
for(auto& e: t) fill_v(e, v);
}
template<class T>
bool chmax(T& a, const T& b) {
if(a < b) {
a = b;
return true;
}
return false;
}
template<class T>
bool chmin(T& a, const T& b) {
if(a > b) {
a = b;
return true;
}
return false;
}
template<typename S, typename T>
istream& operator>>(istream& is, pair<S, T>& p) {
cin >> p.first >> p.second;
return is;
}
template<typename T>
istream& operator>>(istream& is, vector<T>& vec) {
for(T& x: vec) is >> x;
return is;
}
template<typename T>
string join(vector<T>& vec, string splitter) {
stringstream ss;
REP(i, SZ(vec)) {
if(i != 0) ss << splitter;
ss << vec[i];
}
return ss.str();
}
template<typename T>
ostream& operator<<(ostream& os, vector<T>& vec) {
os << join(vec, " ");
return os;
}
template<class T = ll>
struct Edge {
public:
int from, to;
T cost;
Edge() {
}
Edge(int _from, int _to, T _cost) {
from = _from;
to = _to;
cost = _cost;
}
};
template<class T = ll>
using Edges = vector<Edge<T>>;
template<class T = ll>
using Graph = vector<Edges<T>>;
/// @brief 蜊倅ク蟋狗せ譛遏ュ邨瑚キッ髟キ蝠城。後r隗」縺・/// @param s 蟋狗せ
/// @param G 繧ー繝ゥ繝・/// @return ret[i]:s縺九ii縺ク縺ョ譛遏ュ邨瑚キッ髟キ
vll dijkstra(int s, Graph<ll>& G) {
using P = pair<ll, int>;
priority_queue<P, vector<P>, greater<>> que;
vll D(SZ(G), LINF);
D[s] = 0;
que.push(P(0, s));
while(!que.empty()) {
P p = que.top();
que.pop();
int v = p.second;
if(D[v] < p.first) continue;
for(Edge e: G[v]) {
if(D[e.to] > D[v] + e.cost) {
D[e.to] = D[v] + e.cost;
que.push(P(D[e.to], e.to));
}
}
}
return D;
}
int main() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
int N;
cin >> N;
vi H(N);
cin >> H;
priority_queue<PI, vector<PI>, greater<>> C;
vector<PI> V;
REP(i, N) {
C.emplace(H[i], i);
V.eb(H[i], i);
}
so(V);
vi T(N);
cin >> T;
int Q;
cin >> Q;
int limit = -1;
vi stage(N);
set<int> wall;
int stageId = 0;
while(!C.empty()) {
if(limit < C.top().first) {
limit = C.top().first;
wall.insert(stageId);
}
int next_limit = limit;
while(!C.empty() && C.top().first <= limit) {
auto [h, i] = C.top();
C.pop();
chmax(next_limit, T[i]);
stage[i] = stageId;
}
limit = next_limit;
stageId++;
}
REP(i, Q) {
int A, B;
cin >> A >> B;
A--;
B--;
if(T[A] >= H[B]) {
cout << 1 << endl;
continue;
}
int ans = 1;
auto it = lower_bound(ALL(V), PI { T[A], N });
if(it == V.begin()) {
cout << -1 << endl;
continue;
}
it = prev(it);
auto [h, j] = *it;
int initial_stage = stage[j];
int goal_stage = stage[B];
if(*wall.upper_bound(initial_stage) <= goal_stage) {
cout << -1 << endl;
continue;
}
ans += max(0, goal_stage - initial_stage);
chmax(ans, 2);
cout << ans << endl;
}
return 0;
}