oj.uz

Submission #390944

# Submission time Handle Problem Language Result Execution time Memory
390944 2021-04-17T12:26:56 Z SuhaibSawalha1 Sky Walking (IOI19_walk) C++17
10 / 100
 4000 ms 499036 KB 
#include "walk.h"
#include <bits/stdc++.h>
using namespace std;

int dist (array<int, 2> &a, array<int, 2> &b) {
	return abs(a[0] - b[0]) + abs(a[1] - b[1]);
}

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 src, int snk) {
	vector<array<int, 2>> p;
	int n = x.size(), m = y.size();
	vector<vector<int>> seg(n + m), adj, S(n), E(n);
	auto add = [&] (int i) {
		adj.push_back({i});
		seg[i].push_back(p.size());
	};
	auto add2 = [&] (int i, int j) {
		adj.push_back({i, j});
		seg[i].push_back(p.size());
		seg[j].push_back(p.size());
	};
	for (int i = 0; i < n; ++i) {
		add(i);
		p.push_back({x[i], 0});
		add(i);
		p.push_back({x[i], h[i]});
	}
	for (int i = 0; i < m; ++i) {
		add2(l[i], n + i);
		p.push_back({x[l[i]], y[i]});
		add2(r[i], n + i);
		p.push_back({x[r[i]], y[i]});
		S[l[i]].push_back(i);
		E[r[i]].push_back(i);
	}
	set<array<int, 2>> s;
	for (int i = 0; i < n; ++i) {
		for (int v : S[i]) {
			s.insert({y[v], v});
		}
		for (auto &v : s) {
			if (v[0] > h[i]) {
				break;
			}
			add2(i, n + v[1]);
			p.push_back({x[i], v[0]});
		}
		for (int v : E[i]) {
			s.erase({y[v], v});
		}
	}
	priority_queue<pair<long long, int>> pq;
	pq.push({0, 2 * src});
	vector<long long> dis(adj.size(), 1e18);
	dis[2 * src] = 0;
	while (pq.size()) {
		long long d = -pq.top().first;
		int u = pq.top().second;
		pq.pop();
		if (d != dis[u]) {
			continue;
		}
		for (int e : adj[u]) {
			for (int v : seg[e]) {
				int dd = dist(p[u], p[v]);
				if (d + dd < dis[v]) {
					dis[v] = d + dd;
					pq.push({-dis[v], v});
				}
			}
		}
	}
	return dis[2 * snk] == 1e18 ? -1 : dis[2 * snk];
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 432 KB Output is correct
17 Correct 2 ms 332 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 3719 ms 109012 KB Output is correct
4 Correct 976 ms 122492 KB Output is correct
5 Correct 440 ms 97200 KB Output is correct
6 Correct 443 ms 90948 KB Output is correct
7 Correct 464 ms 97420 KB Output is correct
8 Execution timed out 4064 ms 153648 KB Time limit exceeded
9 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 218 ms 23476 KB Output is correct
2 Execution timed out 4069 ms 499036 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 218 ms 23476 KB Output is correct
2 Execution timed out 4069 ms 499036 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 432 KB Output is correct
17 Correct 2 ms 332 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 3719 ms 109012 KB Output is correct
21 Correct 976 ms 122492 KB Output is correct
22 Correct 440 ms 97200 KB Output is correct
23 Correct 443 ms 90948 KB Output is correct
24 Correct 464 ms 97420 KB Output is correct
25 Execution timed out 4064 ms 153648 KB Time limit exceeded
26 Halted 0 ms 0 KB -