oj.uz

Submission #1071534

# Submission time Handle Problem Language Result Execution time Memory
1071534 2024-08-23T08:26:07 Z Gromp15 Sky Walking (IOI19_walk) C++17
24 / 100
 4000 ms 685404 KB 
#include <bits/stdc++.h>
#define ll long long
#define ar array
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#include "walk.h"
using namespace std;
template<typename T> bool ckmin(T &a, const T &b) { return a > b ? a = b, 1 : 0; }
template<typename T> bool ckmax(T &a, const T &b) { return a < b ? a = b, 1 : 0; }

const ll INF = 1e18;

long long min_distance(std::vector<int> x, std::vector<int> h, std::vector<int> l, std::vector<int> r, std::vector<int> y, int s, int g) {
	int n = sz(x), m = sz(l);
	vector<int> idx(n);
	iota(all(idx), 0);
	sort(all(idx), [&](int x, int y) { return h[x] > h[y]; });
	vector<int> idx2(m);
	iota(all(idx2), 0);
	sort(all(idx2), [&](int X, int Y) { return y[X] > y[Y]; });
	set<int> who;
	vector<ar<int, 3>> edges;
	for (int i = 0, on = 0; i < m; i++) {
		int L = l[idx2[i]], R = r[idx2[i]], H = y[idx2[i]];
		while (on < n && h[idx[on]] >= H) {
			who.insert(idx[on++]);
		}
		int lst = -1;
		auto it1 = who.lower_bound(L);
		if (it1 == who.end() || *it1 > R) continue;
		lst = *it1;
		while (1) {
			auto it = who.upper_bound(lst);
			if (it == who.end() || *it > R) break;
			edges.push_back({lst, *it, H});
			lst = *it;
		}
	}
	vector<vector<int>> nodes(n);
	vector<map<int, vector<int>>> adj(n);
	for (auto [l, r, H] : edges) {
		nodes[l].emplace_back(H);
		nodes[r].emplace_back(H);
		adj[l][H].push_back(r);
		adj[r][H].push_back(l);
	}
	nodes[s].emplace_back(0);
	nodes[g].emplace_back(0);
	for (int i = 0; i < n; i++) {
		sort(all(nodes[i]));
		nodes[i].erase(unique(all(nodes[i])), nodes[i].end());
	}
	vector<map<int, ll>> dist(n);
	dist[s][0] = 0;
	priority_queue<ar<ll, 3>, vector<ar<ll, 3>>, greater<ar<ll, 3>>> q;
	q.push({0, s, 0});
	auto rlx = [&](int v1, int x1, int v2, int x2) {
		ll new_dist = dist[v1][x1] + abs(x[v1] - x[v2]) + abs(x1 - x2);
		if (!dist[v2].count(x2) || dist[v2][x2] > new_dist) {
			dist[v2][x2] = new_dist;
			q.push({dist[v2][x2], v2, x2});
		}
	};
	while (q.size()) {
		auto [cost, v, i] = q.top(); q.pop();
		if (cost != dist[v][i]) continue;
		auto it = upper_bound(all(nodes[v]), i);
		if (it != nodes[v].end() && *it <= h[v]) {
			rlx(v, i, v, *it);
		}
		assert(it != nodes[v].begin());
		it--;
		if (it != nodes[v].begin() && i <= h[v]) {
			rlx(v, i, v, *prev(it));
		}
		for (int x : adj[v][i]) {
			rlx(v, i, x, i);
		}
	}
	return dist[g].count(0) ? dist[g][0] : -1;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 604 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1425 ms 141516 KB Output is correct
4 Correct 901 ms 158956 KB Output is correct
5 Correct 436 ms 99844 KB Output is correct
6 Correct 312 ms 89624 KB Output is correct
7 Correct 415 ms 99832 KB Output is correct
8 Correct 1957 ms 179544 KB Output is correct
9 Correct 574 ms 102908 KB Output is correct
10 Correct 1255 ms 216564 KB Output is correct
11 Correct 433 ms 77004 KB Output is correct
12 Correct 265 ms 60160 KB Output is correct
13 Correct 997 ms 192588 KB Output is correct
14 Correct 152 ms 46236 KB Output is correct
15 Correct 201 ms 60184 KB Output is correct
16 Correct 197 ms 60364 KB Output is correct
17 Correct 250 ms 58612 KB Output is correct
18 Correct 357 ms 55424 KB Output is correct
19 Correct 6 ms 3164 KB Output is correct
20 Correct 67 ms 28948 KB Output is correct
21 Correct 174 ms 54804 KB Output is correct
22 Correct 213 ms 60136 KB Output is correct
23 Correct 274 ms 70660 KB Output is correct
24 Correct 218 ms 60108 KB Output is correct
25 Correct 200 ms 57584 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 53 ms 15560 KB Output is correct
2 Execution timed out 4067 ms 685404 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 53 ms 15560 KB Output is correct
2 Execution timed out 4067 ms 685404 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1425 ms 141516 KB Output is correct
21 Correct 901 ms 158956 KB Output is correct
22 Correct 436 ms 99844 KB Output is correct
23 Correct 312 ms 89624 KB Output is correct
24 Correct 415 ms 99832 KB Output is correct
25 Correct 1957 ms 179544 KB Output is correct
26 Correct 574 ms 102908 KB Output is correct
27 Correct 1255 ms 216564 KB Output is correct
28 Correct 433 ms 77004 KB Output is correct
29 Correct 265 ms 60160 KB Output is correct
30 Correct 997 ms 192588 KB Output is correct
31 Correct 152 ms 46236 KB Output is correct
32 Correct 201 ms 60184 KB Output is correct
33 Correct 197 ms 60364 KB Output is correct
34 Correct 250 ms 58612 KB Output is correct
35 Correct 357 ms 55424 KB Output is correct
36 Correct 6 ms 3164 KB Output is correct
37 Correct 67 ms 28948 KB Output is correct
38 Correct 174 ms 54804 KB Output is correct
39 Correct 213 ms 60136 KB Output is correct
40 Correct 274 ms 70660 KB Output is correct
41 Correct 218 ms 60108 KB Output is correct
42 Correct 200 ms 57584 KB Output is correct
43 Correct 53 ms 15560 KB Output is correct
44 Execution timed out 4067 ms 685404 KB Time limit exceeded
45 Halted 0 ms 0 KB -