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답안 #607494

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
607494 2022-07-26T18:38:28 Z Temmie Sky Walking (IOI19_walk) C++17
57 / 100
 823 ms 107772 KB 
#include <bits/stdc++.h>

struct SG {
	
	int h, l, r;
	
	SG() { }
	
	SG(int a, int b, int c) : h(a) , l(b) , r(c) { }
	
};

int n, m;
std::vector <std::pair <int, int>> g[2];
std::vector <std::vector <std::pair <int, int>>> gg;
std::vector <std::vector <int>> del[2];
std::vector <int> h;
std::vector <SG> sg;

void fix(int node) {
	std::vector <std::pair <int, int>> dir[2];
	dir[0] = dir[1] = { { h[node], node } };
	for (int i = node + 1; i < n; i++) {
		if (h[i] <= dir[1].back().first) {
			continue;
		}
		dir[1].emplace_back(h[i], i);
	}
	for (int i = node - 1; i >= 0; i--) {
		if (h[i] <= dir[0].back().first) {
			continue;
		}
		dir[0].emplace_back(h[i], i);
	}
	auto cop = sg;
	cop.clear();
	for (const auto& s : sg) {
		if (s.l < node && node < s.r) {
			int lb[2] = {
				(int) (std::lower_bound(dir[0].begin(), dir[0].end(), std::make_pair(s.h, -1)) - dir[0].begin()),
				(int) (std::lower_bound(dir[1].begin(), dir[1].end(), std::make_pair(s.h, -1)) - dir[1].begin())
			};
			if (s.l != dir[0][lb[0]].second) {
				cop.emplace_back(s.h, s.l, dir[0][lb[0]].second);
			}
			if (dir[0][lb[0]].second != dir[1][lb[1]].second) {
				cop.emplace_back(s.h, dir[0][lb[0]].second, dir[1][lb[1]].second);
			}
			if (dir[1][lb[1]].second != s.r) {
				cop.emplace_back(s.h, dir[1][lb[1]].second, s.r);
			}
		} else {
			cop.emplace_back(s);
		}
	}
	sg = cop;
}

long long min_distance(std::vector <int> a, std::vector <int> _h, std::vector <int> l, std::vector <int> r, std::vector <int> y, int f, int t) {
	n = a.size();
	m = l.size();
	sg.resize(m);
	h = _h;
	for (int i = 0; i < m; i++) {
		sg[i] = { y[i], l[i], r[i] };
	}
	fix(f);
	fix(t);
	del[0].resize(400'000);
	del[1].resize(400'000);
	for (const auto& s : sg) {
		del[0][s.l].emplace_back(s.h);
		del[1][s.r].emplace_back(s.h);
	}
	std::multiset <int> st = { 0 };
	for (int i = 0; i < n; i++) {
		for (int x : del[0][i]) {
			st.insert(x);
		}
		for (int k = 0; k < 2; k++) {
			for (int x : del[k][i]) {
				g[0].emplace_back(a[i], x);
				g[0].emplace_back(a[i], *prev(st.lower_bound(x)));
			}
		}
		for (int x : del[1][i]) {
			st.erase(st.find(x));
		}
	}
	std::sort(g[0].begin(), g[0].end());
	g[0].resize(std::unique(g[0].begin(), g[0].end()) - g[0].begin());
	//for (auto p : g[0]) {
		//if (g[1].empty() || g[1].back() != p) {
			//g[1].push_back(p);
		//}
	//}
	//g[0] = g[1];
	//g[1].clear();
	for (auto p : g[0]) {
		g[1].emplace_back(p.second, p.first);
	}
	std::sort(g[1].begin(), g[1].end());
	gg.resize(400'000);
	for (int i = 1; i < (int) g[0].size(); i++) {
		if (g[0][i - 1].first != g[0][i].first) {
			continue;
		}
		gg[i - 1].emplace_back(i - 0, g[0][i].second - g[0][i - 1].second);
		gg[i - 0].emplace_back(i - 1, g[0][i].second - g[0][i - 1].second);
	}
	for (const auto& s : sg) {
		int lb = std::lower_bound(g[1].begin(), g[1].end(), std::make_pair(s.h, a[s.l])) - g[1].begin();
		while (g[1][lb] != (std::pair <int, int>) { s.h, a[s.r] }) {
			std::pair <int, int> p[2] = {
				{ g[1][lb - 0].second, g[1][lb - 0].first },
				{ g[1][lb + 1].second, g[1][lb + 1].first }
			};
			lb++;
			gg[std::lower_bound(g[0].begin(), g[0].end(), p[0]) - g[0].begin()].emplace_back(std::lower_bound(g[0].begin(), g[0].end(), p[1]) - g[0].begin(), p[1].first - p[0].first);
			gg[std::lower_bound(g[0].begin(), g[0].end(), p[1]) - g[0].begin()].emplace_back(std::lower_bound(g[0].begin(), g[0].end(), p[0]) - g[0].begin(), p[1].first - p[0].first);
		}
	}
	std::vector <long long> dd(400'000, 1LL << 60);
	std::priority_queue <std::pair <long long, int>> pq;
	{
		int tmp = std::lower_bound(g[0].begin(), g[0].end(), std::make_pair(a[f], 0)) - g[0].begin();
		if (tmp == (int) g[0].size() || g[0][tmp] != (std::pair <int, int>) { a[f], 0 }) {
			return -1;
		}
		pq.push({ dd[tmp] = 0, tmp });
	}
	while (pq.size()) {
		int v = pq.top().second;
		pq.pop();
		for (auto p : gg[v]) {
			if (dd[p.first] <= dd[v] + p.second) {
				continue;
			}
			dd[p.first] = dd[v] + p.second;
			pq.push({ -dd[p.first], p.first });
		}
	}
	int lb = std::lower_bound(g[0].begin(), g[0].end(), std::make_pair(a[t], 0)) - g[0].begin();
	return lb == (int) g[0].size() || g[0][lb] != (std::pair <int, int>) { a[t], 0 } || dd[lb] == (1LL << 60) ? -1LL : dd[lb];
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 31572 KB Output is correct
2 Correct 14 ms 31612 KB Output is correct
3 Correct 16 ms 31532 KB Output is correct
4 Correct 15 ms 31600 KB Output is correct
5 Correct 15 ms 31524 KB Output is correct
6 Correct 15 ms 31628 KB Output is correct
7 Correct 16 ms 31572 KB Output is correct
8 Correct 15 ms 31560 KB Output is correct
9 Correct 15 ms 31572 KB Output is correct
10 Correct 17 ms 31616 KB Output is correct
11 Correct 17 ms 31508 KB Output is correct
12 Correct 15 ms 31572 KB Output is correct
13 Correct 17 ms 31572 KB Output is correct
14 Correct 16 ms 31556 KB Output is correct
15 Correct 16 ms 31572 KB Output is correct
16 Correct 20 ms 31616 KB Output is correct
17 Correct 15 ms 31572 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 31572 KB Output is correct
2 Correct 15 ms 31572 KB Output is correct
3 Correct 485 ms 60984 KB Output is correct
4 Correct 455 ms 65756 KB Output is correct
5 Correct 301 ms 57288 KB Output is correct
6 Correct 291 ms 56588 KB Output is correct
7 Correct 302 ms 57268 KB Output is correct
8 Correct 503 ms 62136 KB Output is correct
9 Correct 423 ms 63032 KB Output is correct
10 Correct 511 ms 64984 KB Output is correct
11 Correct 427 ms 59120 KB Output is correct
12 Correct 293 ms 62948 KB Output is correct
13 Correct 473 ms 67484 KB Output is correct
14 Correct 292 ms 57440 KB Output is correct
15 Correct 301 ms 61264 KB Output is correct
16 Correct 304 ms 60552 KB Output is correct
17 Correct 287 ms 59660 KB Output is correct
18 Correct 408 ms 58036 KB Output is correct
19 Correct 23 ms 32860 KB Output is correct
20 Correct 102 ms 45152 KB Output is correct
21 Correct 295 ms 58736 KB Output is correct
22 Correct 283 ms 62916 KB Output is correct
23 Correct 404 ms 63484 KB Output is correct
24 Correct 298 ms 61532 KB Output is correct
25 Correct 286 ms 59528 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 104 ms 39888 KB Output is correct
2 Correct 599 ms 64596 KB Output is correct
3 Correct 617 ms 65396 KB Output is correct
4 Correct 662 ms 68820 KB Output is correct
5 Correct 823 ms 70344 KB Output is correct
6 Correct 683 ms 68080 KB Output is correct
7 Correct 290 ms 52180 KB Output is correct
8 Correct 301 ms 62940 KB Output is correct
9 Correct 662 ms 68656 KB Output is correct
10 Correct 329 ms 59312 KB Output is correct
11 Correct 26 ms 32592 KB Output is correct

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 104 ms 39888 KB Output is correct
2 Correct 599 ms 64596 KB Output is correct
3 Correct 617 ms 65396 KB Output is correct
4 Correct 662 ms 68820 KB Output is correct
5 Correct 823 ms 70344 KB Output is correct
6 Correct 683 ms 68080 KB Output is correct
7 Correct 290 ms 52180 KB Output is correct
8 Correct 301 ms 62940 KB Output is correct
9 Correct 662 ms 68656 KB Output is correct
10 Correct 329 ms 59312 KB Output is correct
11 Correct 26 ms 32592 KB Output is correct
12 Correct 622 ms 65288 KB Output is correct
13 Correct 594 ms 67768 KB Output is correct
14 Correct 748 ms 70244 KB Output is correct
15 Correct 572 ms 67324 KB Output is correct
16 Correct 482 ms 63884 KB Output is correct
17 Correct 550 ms 67636 KB Output is correct
18 Correct 540 ms 67380 KB Output is correct
19 Correct 522 ms 64032 KB Output is correct
20 Correct 346 ms 51164 KB Output is correct
21 Correct 42 ms 33824 KB Output is correct
22 Correct 444 ms 60588 KB Output is correct
23 Correct 373 ms 60248 KB Output is correct
24 Correct 303 ms 57588 KB Output is correct
25 Correct 341 ms 58920 KB Output is correct
26 Correct 263 ms 57504 KB Output is correct
27 Correct 708 ms 70452 KB Output is correct
28 Correct 551 ms 67704 KB Output is correct
29 Correct 720 ms 67964 KB Output is correct
30 Correct 286 ms 52184 KB Output is correct
31 Correct 629 ms 68424 KB Output is correct
32 Correct 305 ms 58964 KB Output is correct
33 Correct 308 ms 61064 KB Output is correct
34 Correct 355 ms 60808 KB Output is correct
35 Correct 355 ms 62128 KB Output is correct
36 Correct 327 ms 60292 KB Output is correct
37 Correct 297 ms 58780 KB Output is correct
38 Correct 288 ms 62964 KB Output is correct
39 Correct 385 ms 63420 KB Output is correct
40 Correct 298 ms 61540 KB Output is correct
41 Correct 281 ms 59340 KB Output is correct

Subtask #5
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 31572 KB Output is correct
2 Correct 14 ms 31612 KB Output is correct
3 Correct 16 ms 31532 KB Output is correct
4 Correct 15 ms 31600 KB Output is correct
5 Correct 15 ms 31524 KB Output is correct
6 Correct 15 ms 31628 KB Output is correct
7 Correct 16 ms 31572 KB Output is correct
8 Correct 15 ms 31560 KB Output is correct
9 Correct 15 ms 31572 KB Output is correct
10 Correct 17 ms 31616 KB Output is correct
11 Correct 17 ms 31508 KB Output is correct
12 Correct 15 ms 31572 KB Output is correct
13 Correct 17 ms 31572 KB Output is correct
14 Correct 16 ms 31556 KB Output is correct
15 Correct 16 ms 31572 KB Output is correct
16 Correct 20 ms 31616 KB Output is correct
17 Correct 15 ms 31572 KB Output is correct
18 Correct 16 ms 31572 KB Output is correct
19 Correct 15 ms 31572 KB Output is correct
20 Correct 485 ms 60984 KB Output is correct
21 Correct 455 ms 65756 KB Output is correct
22 Correct 301 ms 57288 KB Output is correct
23 Correct 291 ms 56588 KB Output is correct
24 Correct 302 ms 57268 KB Output is correct
25 Correct 503 ms 62136 KB Output is correct
26 Correct 423 ms 63032 KB Output is correct
27 Correct 511 ms 64984 KB Output is correct
28 Correct 427 ms 59120 KB Output is correct
29 Correct 293 ms 62948 KB Output is correct
30 Correct 473 ms 67484 KB Output is correct
31 Correct 292 ms 57440 KB Output is correct
32 Correct 301 ms 61264 KB Output is correct
33 Correct 304 ms 60552 KB Output is correct
34 Correct 287 ms 59660 KB Output is correct
35 Correct 408 ms 58036 KB Output is correct
36 Correct 23 ms 32860 KB Output is correct
37 Correct 102 ms 45152 KB Output is correct
38 Correct 295 ms 58736 KB Output is correct
39 Correct 283 ms 62916 KB Output is correct
40 Correct 404 ms 63484 KB Output is correct
41 Correct 298 ms 61532 KB Output is correct
42 Correct 286 ms 59528 KB Output is correct
43 Correct 104 ms 39888 KB Output is correct
44 Correct 599 ms 64596 KB Output is correct
45 Correct 617 ms 65396 KB Output is correct
46 Correct 662 ms 68820 KB Output is correct
47 Correct 823 ms 70344 KB Output is correct
48 Correct 683 ms 68080 KB Output is correct
49 Correct 290 ms 52180 KB Output is correct
50 Correct 301 ms 62940 KB Output is correct
51 Correct 662 ms 68656 KB Output is correct
52 Correct 329 ms 59312 KB Output is correct
53 Correct 26 ms 32592 KB Output is correct
54 Correct 622 ms 65288 KB Output is correct
55 Correct 594 ms 67768 KB Output is correct
56 Correct 748 ms 70244 KB Output is correct
57 Correct 572 ms 67324 KB Output is correct
58 Correct 482 ms 63884 KB Output is correct
59 Correct 550 ms 67636 KB Output is correct
60 Correct 540 ms 67380 KB Output is correct
61 Correct 522 ms 64032 KB Output is correct
62 Correct 346 ms 51164 KB Output is correct
63 Correct 42 ms 33824 KB Output is correct
64 Correct 444 ms 60588 KB Output is correct
65 Correct 373 ms 60248 KB Output is correct
66 Correct 303 ms 57588 KB Output is correct
67 Correct 341 ms 58920 KB Output is correct
68 Correct 263 ms 57504 KB Output is correct
69 Correct 708 ms 70452 KB Output is correct
70 Correct 551 ms 67704 KB Output is correct
71 Correct 720 ms 67964 KB Output is correct
72 Correct 286 ms 52184 KB Output is correct
73 Correct 629 ms 68424 KB Output is correct
74 Correct 305 ms 58964 KB Output is correct
75 Correct 308 ms 61064 KB Output is correct
76 Correct 355 ms 60808 KB Output is correct
77 Correct 355 ms 62128 KB Output is correct
78 Correct 327 ms 60292 KB Output is correct
79 Correct 297 ms 58780 KB Output is correct
80 Correct 288 ms 62964 KB Output is correct
81 Correct 385 ms 63420 KB Output is correct
82 Correct 298 ms 61540 KB Output is correct
83 Correct 281 ms 59340 KB Output is correct
84 Correct 86 ms 38516 KB Output is correct
85 Runtime error 228 ms 107772 KB Execution killed with signal 11
86 Halted 0 ms 0 KB -