oj.uz

답안 #768662

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
768662 2023-06-28T10:48:23 Z marvinthang Sky Walking (IOI19_walk) C++17
100 / 100
 807 ms 80720 KB 
#include "walk.h"
/*************************************
*    author: marvinthang             *
*    created: 28.06.2023 15:43:09    *
*************************************/

#include <bits/stdc++.h>

using namespace std;

#define                  fi  first
#define                  se  second
#define                left  ___left
#define               right  ___right
#define                TIME  (1.0 * clock() / CLOCKS_PER_SEC)
#define             MASK(i)  (1LL << (i))
#define           BIT(x, i)  ((x) >> (i) & 1)
#define  __builtin_popcount  __builtin_popcountll
#define              ALL(v)  (v).begin(), (v).end()
#define           REP(i, n)  for (int i = 0, _n = (n); i < _n; ++i)
#define          REPD(i, n)  for (int i = (n); i--; )
#define        FOR(i, a, b)  for (int i = (a), _b = (b); i < _b; ++i) 
#define       FORD(i, b, a)  for (int i = (b), _a = (a); --i >= _a; ) 
#define       FORE(i, a, b)  for (int i = (a), _b = (b); i <= _b; ++i) 
#define      FORDE(i, b, a)  for (int i = (b), _a = (a); i >= _a; --i) 
#define        scan_op(...)  istream & operator >> (istream &in, __VA_ARGS__ &u)
#define       print_op(...)  ostream & operator << (ostream &out, const __VA_ARGS__ &u)
#ifdef LOCAL
    #include "debug.h"
#else
    #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
    #define DB(...) 23
    #define db(...) 23
    #define debug(...) 23
#endif

template <class U, class V> scan_op(pair <U, V>)  { return in >> u.first >> u.second; }
template <class T> scan_op(vector <T>)  { for (size_t i = 0; i < u.size(); ++i) in >> u[i]; return in; }
template <class U, class V> print_op(pair <U, V>)  { return out << '(' << u.first << ", " << u.second << ')'; }
template <size_t i, class T> ostream & print_tuple_utils(ostream &out, const T &tup) { if constexpr(i == tuple_size<T>::value) return out << ")";  else return print_tuple_utils<i + 1, T>(out << (i ? ", " : "(") << get<i>(tup), tup); }
template <class ...U> print_op(tuple<U...>) { return print_tuple_utils<0, tuple<U...>>(out, u); }
template <class Con, class = decltype(begin(declval<Con>()))> typename enable_if <!is_same<Con, string>::value, ostream&>::type operator << (ostream &out, const Con &con) { out << '{'; for (__typeof(con.begin()) it = con.begin(); it != con.end(); ++it) out << (it == con.begin() ? "" : ", ") << *it; return out << '}'; }
template <class A, class B> bool minimize(A &a, B b)  { if (a > b) { a = b; return true; } return false; }
template <class A, class B> bool maximize(A &a, B b)  { if (a < b) { a = b; return true; } return false; }

// end of template

const long long INF = 1e18;

long long min_distance(vector <int> x, vector <int> h, vector <int> l, vector <int> r, vector <int> y, int s, int g) {
	int n = x.size();
	vector <vector <int>> startAt(n), endAt(n);
	for (int x: {s, g}) {
		vector <pair <int, int>> f;
		REP(i, n) f.emplace_back(h[i], i);
		vector <int> nl, nr, ny;
		REP(i, l.size()) {
			if (l[i] <= x && x <= r[i]) f.emplace_back(y[i], -1 - i);
			else {
				nl.push_back(l[i]);
				nr.push_back(r[i]);
				ny.push_back(y[i]);
			}
		}

		sort(f.rbegin(), f.rend());
		set <int> s;
		for (auto [_, i]: f) {
			if (i >= 0) s.insert(i);
			else {
				i = -1 - i;
				auto it = s.lower_bound(x);
				int b = *it;
				int a = b == x ? x : *prev(it);
				if (a != l[i]) {
					nl.push_back(l[i]);
					nr.push_back(a);
					ny.push_back(y[i]);
				}
				if (a != b) {
					nl.push_back(a);
					nr.push_back(b);
					ny.push_back(y[i]);
				}
				if (b != r[i]) {
					nl.push_back(b);
					nr.push_back(r[i]);
					ny.push_back(y[i]);
				}
			}
		}
		l = move(nl);
		r = move(nr);
		y = move(ny);
	}
	REP(i, l.size()) {
		startAt[l[i]].push_back(i);
		endAt[r[i]].push_back(i);
	}
	map <int, int> heights;
	vector <vector <int>> yy(n);
	vector <vector <pair <int, int>>> adj;
	vector <int> pref(n);
	auto add_edge = [&] (int u, int v, int w) {
		adj[u].emplace_back(w, v);
		adj[v].emplace_back(w, u);
	};
	REP(i, n) {
		if (i) pref[i] = pref[i - 1] + yy[i - 1].size();
		if (i == s || i == g) {
			yy[i].push_back(0);
			for (int j: startAt[i]) yy[i].push_back(y[j]);
			for (int j: endAt[i]) yy[i].push_back(y[j]);
			for (auto it: heights) if (it.fi <= h[i]) yy[i].push_back(it.fi);
			sort(ALL(yy[i]));
			yy[i].erase(unique(ALL(yy[i])), yy[i].end());
			adj.resize(pref[i] + yy[i].size());
			REP(j, (int) yy[i].size() - 1) add_edge(pref[i] + j, pref[i] + j + 1, yy[i][j + 1] - yy[i][j]);
		} else {
			for (int j: startAt[i]) {
				yy[i].push_back(y[j]);
				auto it = heights.lower_bound(y[j]);
				if (it != heights.begin()) yy[i].push_back(prev(it)->fi);
			}
			for (int j: endAt[i]) {
				yy[i].push_back(y[j]);
				auto it = heights.lower_bound(y[j]);
				if (it != heights.begin()) yy[i].push_back(prev(it)->fi);
			}
			sort(ALL(yy[i]));
			yy[i].erase(unique(ALL(yy[i])), yy[i].end());
			adj.resize(pref[i] + yy[i].size());
			for (int j: startAt[i]) {
				int p = lower_bound(ALL(yy[i]), y[j]) - yy[i].begin();
				if (p) add_edge(pref[i] + p - 1, pref[i] + p, yy[i][p] - yy[i][p - 1]);
			}
			for (int j: endAt[i]) {
				int p = lower_bound(ALL(yy[i]), y[j]) - yy[i].begin();
				if (p) add_edge(pref[i] + p - 1, pref[i] + p, yy[i][p] - yy[i][p - 1]);
			}
		}

		REP(j, yy[i].size()) if (heights.count(yy[i][j])) {
			int k = heights[yy[i][j]];
			int p = lower_bound(ALL(yy[k]), yy[i][j]) - yy[k].begin();
			add_edge(pref[k] + p, pref[i] + j, x[i] - x[k]);
			heights[yy[i][j]] = i;
		}

		for (int j: endAt[i]) heights.erase(y[j]);
		for (int j: startAt[i]) heights[y[j]] = i;
	}
	priority_queue <pair <long long, int>, vector <pair <long long, int>>, greater <pair <long long, int>>> pq;
	vector <long long> dist(adj.size(), INF);
	pq.emplace(dist[pref[s]] = 0, pref[s]);
	while (!pq.empty()) {
		auto [du, u] = pq.top(); pq.pop();
		if (du != dist[u]) continue;
		for (auto [w, v]: adj[u]) if (minimize(dist[v], du + w)) pq.emplace(dist[v], v);
	}
	return dist[pref[g]] < INF ? dist[pref[g]] : -1;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 296 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 292 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 227 ms 31228 KB Output is correct
4 Correct 263 ms 44468 KB Output is correct
5 Correct 172 ms 34908 KB Output is correct
6 Correct 187 ms 33260 KB Output is correct
7 Correct 171 ms 38496 KB Output is correct
8 Correct 229 ms 32192 KB Output is correct
9 Correct 212 ms 42160 KB Output is correct
10 Correct 281 ms 47076 KB Output is correct
11 Correct 188 ms 33780 KB Output is correct
12 Correct 166 ms 37916 KB Output is correct
13 Correct 262 ms 50136 KB Output is correct
14 Correct 166 ms 33896 KB Output is correct
15 Correct 173 ms 35320 KB Output is correct
16 Correct 154 ms 35832 KB Output is correct
17 Correct 170 ms 35112 KB Output is correct
18 Correct 191 ms 36708 KB Output is correct
19 Correct 7 ms 2184 KB Output is correct
20 Correct 85 ms 17008 KB Output is correct
21 Correct 120 ms 33128 KB Output is correct
22 Correct 151 ms 36676 KB Output is correct
23 Correct 242 ms 43620 KB Output is correct
24 Correct 144 ms 36224 KB Output is correct
25 Correct 135 ms 34328 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 44 ms 9980 KB Output is correct
2 Correct 314 ms 36760 KB Output is correct
3 Correct 332 ms 36028 KB Output is correct
4 Correct 432 ms 47676 KB Output is correct
5 Correct 538 ms 48780 KB Output is correct
6 Correct 538 ms 49076 KB Output is correct
7 Correct 206 ms 30312 KB Output is correct
8 Correct 138 ms 33872 KB Output is correct
9 Correct 465 ms 50252 KB Output is correct
10 Correct 204 ms 33516 KB Output is correct
11 Correct 24 ms 6516 KB Output is correct

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 44 ms 9980 KB Output is correct
2 Correct 314 ms 36760 KB Output is correct
3 Correct 332 ms 36028 KB Output is correct
4 Correct 432 ms 47676 KB Output is correct
5 Correct 538 ms 48780 KB Output is correct
6 Correct 538 ms 49076 KB Output is correct
7 Correct 206 ms 30312 KB Output is correct
8 Correct 138 ms 33872 KB Output is correct
9 Correct 465 ms 50252 KB Output is correct
10 Correct 204 ms 33516 KB Output is correct
11 Correct 24 ms 6516 KB Output is correct
12 Correct 335 ms 35660 KB Output is correct
13 Correct 361 ms 47348 KB Output is correct
14 Correct 546 ms 48728 KB Output is correct
15 Correct 295 ms 41560 KB Output is correct
16 Correct 325 ms 42740 KB Output is correct
17 Correct 353 ms 46804 KB Output is correct
18 Correct 304 ms 41612 KB Output is correct
19 Correct 333 ms 43868 KB Output is correct
20 Correct 265 ms 29884 KB Output is correct
21 Correct 82 ms 12264 KB Output is correct
22 Correct 235 ms 39420 KB Output is correct
23 Correct 213 ms 39476 KB Output is correct
24 Correct 175 ms 32996 KB Output is correct
25 Correct 194 ms 39236 KB Output is correct
26 Correct 151 ms 30168 KB Output is correct
27 Correct 559 ms 52512 KB Output is correct
28 Correct 306 ms 47044 KB Output is correct
29 Correct 565 ms 49048 KB Output is correct
30 Correct 211 ms 30156 KB Output is correct
31 Correct 513 ms 49964 KB Output is correct
32 Correct 164 ms 31832 KB Output is correct
33 Correct 171 ms 33500 KB Output is correct
34 Correct 218 ms 38436 KB Output is correct
35 Correct 243 ms 35936 KB Output is correct
36 Correct 160 ms 33628 KB Output is correct
37 Correct 119 ms 30352 KB Output is correct
38 Correct 146 ms 33492 KB Output is correct
39 Correct 246 ms 40644 KB Output is correct
40 Correct 140 ms 33044 KB Output is correct
41 Correct 140 ms 31664 KB Output is correct

Subtask #5
43.0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 296 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 292 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 227 ms 31228 KB Output is correct
21 Correct 263 ms 44468 KB Output is correct
22 Correct 172 ms 34908 KB Output is correct
23 Correct 187 ms 33260 KB Output is correct
24 Correct 171 ms 38496 KB Output is correct
25 Correct 229 ms 32192 KB Output is correct
26 Correct 212 ms 42160 KB Output is correct
27 Correct 281 ms 47076 KB Output is correct
28 Correct 188 ms 33780 KB Output is correct
29 Correct 166 ms 37916 KB Output is correct
30 Correct 262 ms 50136 KB Output is correct
31 Correct 166 ms 33896 KB Output is correct
32 Correct 173 ms 35320 KB Output is correct
33 Correct 154 ms 35832 KB Output is correct
34 Correct 170 ms 35112 KB Output is correct
35 Correct 191 ms 36708 KB Output is correct
36 Correct 7 ms 2184 KB Output is correct
37 Correct 85 ms 17008 KB Output is correct
38 Correct 120 ms 33128 KB Output is correct
39 Correct 151 ms 36676 KB Output is correct
40 Correct 242 ms 43620 KB Output is correct
41 Correct 144 ms 36224 KB Output is correct
42 Correct 135 ms 34328 KB Output is correct
43 Correct 44 ms 9980 KB Output is correct
44 Correct 314 ms 36760 KB Output is correct
45 Correct 332 ms 36028 KB Output is correct
46 Correct 432 ms 47676 KB Output is correct
47 Correct 538 ms 48780 KB Output is correct
48 Correct 538 ms 49076 KB Output is correct
49 Correct 206 ms 30312 KB Output is correct
50 Correct 138 ms 33872 KB Output is correct
51 Correct 465 ms 50252 KB Output is correct
52 Correct 204 ms 33516 KB Output is correct
53 Correct 24 ms 6516 KB Output is correct
54 Correct 335 ms 35660 KB Output is correct
55 Correct 361 ms 47348 KB Output is correct
56 Correct 546 ms 48728 KB Output is correct
57 Correct 295 ms 41560 KB Output is correct
58 Correct 325 ms 42740 KB Output is correct
59 Correct 353 ms 46804 KB Output is correct
60 Correct 304 ms 41612 KB Output is correct
61 Correct 333 ms 43868 KB Output is correct
62 Correct 265 ms 29884 KB Output is correct
63 Correct 82 ms 12264 KB Output is correct
64 Correct 235 ms 39420 KB Output is correct
65 Correct 213 ms 39476 KB Output is correct
66 Correct 175 ms 32996 KB Output is correct
67 Correct 194 ms 39236 KB Output is correct
68 Correct 151 ms 30168 KB Output is correct
69 Correct 559 ms 52512 KB Output is correct
70 Correct 306 ms 47044 KB Output is correct
71 Correct 565 ms 49048 KB Output is correct
72 Correct 211 ms 30156 KB Output is correct
73 Correct 513 ms 49964 KB Output is correct
74 Correct 164 ms 31832 KB Output is correct
75 Correct 171 ms 33500 KB Output is correct
76 Correct 218 ms 38436 KB Output is correct
77 Correct 243 ms 35936 KB Output is correct
78 Correct 160 ms 33628 KB Output is correct
79 Correct 119 ms 30352 KB Output is correct
80 Correct 146 ms 33492 KB Output is correct
81 Correct 246 ms 40644 KB Output is correct
82 Correct 140 ms 33044 KB Output is correct
83 Correct 140 ms 31664 KB Output is correct
84 Correct 39 ms 8288 KB Output is correct
85 Correct 344 ms 39320 KB Output is correct
86 Correct 633 ms 62968 KB Output is correct
87 Correct 81 ms 15804 KB Output is correct
88 Correct 99 ms 17232 KB Output is correct
89 Correct 69 ms 15740 KB Output is correct
90 Correct 14 ms 3824 KB Output is correct
91 Correct 1 ms 468 KB Output is correct
92 Correct 14 ms 2900 KB Output is correct
93 Correct 177 ms 26508 KB Output is correct
94 Correct 80 ms 16596 KB Output is correct
95 Correct 255 ms 44484 KB Output is correct
96 Correct 214 ms 43320 KB Output is correct
97 Correct 180 ms 36816 KB Output is correct
98 Correct 199 ms 42976 KB Output is correct
99 Correct 807 ms 80720 KB Output is correct
100 Correct 448 ms 51420 KB Output is correct
101 Correct 606 ms 60628 KB Output is correct
102 Correct 230 ms 33248 KB Output is correct
103 Correct 166 ms 34860 KB Output is correct
104 Correct 186 ms 36524 KB Output is correct
105 Correct 214 ms 38804 KB Output is correct
106 Correct 198 ms 35760 KB Output is correct
107 Correct 219 ms 38564 KB Output is correct
108 Correct 25 ms 4508 KB Output is correct
109 Correct 427 ms 44300 KB Output is correct
110 Correct 339 ms 49960 KB Output is correct
111 Correct 295 ms 48928 KB Output is correct
112 Correct 200 ms 38264 KB Output is correct
113 Correct 193 ms 41120 KB Output is correct