oj.uz

답안 #1048965

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1048965 2024-08-08T11:42:57 Z dozer Sky Walking (IOI19_walk) C++14
10 / 100
 4000 ms 357584 KB 
#include "walk.h"
#include <bits/stdc++.h>
using namespace std;
#define sp " "
#define endl "\n"
#define pb push_back
#define pii pair<ll, ll>
#define st first
#define nd second
#define fileio() freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#define fastio() cin.tie(0), ios_base::sync_with_stdio(0)
#define LL node * 2
#define RR node * 2 + 1
#define ll long long


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) {
	ll n = x.size(), m = l.size();
	vector<map<ll, long long>> dist(n);
	vector<vector<pii>> adj(n);
	vector<vector<ll>> points(n);
	vector<array<ll, 3>> events;
	vector<ll> last(m, -1);

	set<pii> open;
	for (ll i = 0; i < m; i++)
		events.pb({l[i], i, -1}), events.pb({r[i] + 1, i, 1});
	sort(events.begin(), events.end());


	ll it = 0;

	for (ll i = 0; i < n; i++){
		while(it < events.size() && events[it][0] == i){
			ll t = events[it][2], ind = events[it][1];
			if (t == -1) open.insert({-y[ind], ind});
			else open.erase({-y[ind], ind});
			it++;
		}

		auto it2 = open.lower_bound({-h[i], 0});
		while(it2 != open.end()){
			points[i].pb(-it2->st);
			ll ind = it2->nd;
			if (last[ind] != -1){
				adj[i].pb({y[ind], last[ind]});
				adj[last[ind]].pb({y[ind], i});
			}
			last[ind] = i;
			it2++;
		}
		points[i].pb(0);
	}

	for (ll i = 0; i < n; i++){
		sort(points[i].begin(), points[i].end());
		sort(adj[i].begin(), adj[i].end());
	}

	priority_queue<array<long long, 3>> q;
	q.push({0, s, 0});
	dist[s][0] = 0;
	while(!q.empty()){
		array<ll, 3> tmp = q.top();
		q.pop();
		long long X = tmp[1], y = tmp[2], d = -tmp[0];
		if (dist[X][y] < d) continue;
		//cout<<X<<sp<<y<<sp<<d<<endl;
		ll pos = lower_bound(points[X].begin(), points[X].end(), y) - points[X].begin();
		if (pos > 0){
			ll to = points[X][pos - 1];
			ll tmp = d + abs(to - y);
			if (dist[X].count(to) == 0 || dist[X][to] > tmp){
				dist[X][to] = tmp;
				q.push({-tmp, X, to});
			}
		}
		if (pos < points[X].size()){
			ll to = points[X][pos + 1];
			ll tmp = d + abs(to - y);
			if (dist[X].count(to) == 0 || dist[X][to] > tmp){
				dist[X][to] = tmp;
				q.push({-tmp, X, to});
			}
		}

		pos = lower_bound(adj[X].begin(), adj[X].end(), make_pair(y, (ll)0)) - adj[X].begin();
		while(pos < adj[X].size() && adj[X][pos].st == y){
			ll to = adj[X][pos].nd;
			ll tmp = d + (ll)abs(x[X] - x[to]);
			if (dist[to].count(y) == 0 || dist[to][y] > tmp){
				dist[to][y] = tmp;
				q.push({-tmp, to, y});
			}
			pos++;
		}
	}

	if (dist[g].count(0)) return dist[g][0];
	return -1;
}
/*

int main() {
	fileio();
	int n, m;
	assert(2 == scanf("%d%d", &n, &m));
	vector<int> x(n), h(n);
	for (int i = 0; i < n; i++)
		assert(2 == scanf("%d%d", &x[i], &h[i]));
	vector<int> l(m), r(m), y(m);
	for (int i = 0; i < m; i++)
		assert(3 == scanf("%d%d%d", &l[i], &r[i], &y[i]));
	int s, g;
	assert(2 == scanf("%d%d", &s, &g));
	fclose(stdin);

	long long result = min_distance(x, h, l, r, y, s, g);

	printf("%lld\n", result);
	fclose(stdout);
	return 0;
}*/

Compilation message

walk.cpp: In function 'long long int min_distance(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, int, int)':
walk.cpp:34:12: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::array<long long int, 3> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |   while(it < events.size() && events[it][0] == i){
      |         ~~~^~~~~~~~~~~~~~~
walk.cpp:78:11: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |   if (pos < points[X].size()){
      |       ~~~~^~~~~~~~~~~~~~~~~~
walk.cpp:88:13: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   88 |   while(pos < adj[X].size() && adj[X][pos].st == y){
      |         ~~~~^~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 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 0 ms 364 KB Output is correct
17 Correct 1 ms 348 KB Output is correct

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 553 ms 94912 KB Output is correct
4 Correct 336 ms 109936 KB Output is correct
5 Correct 102 ms 54508 KB Output is correct
6 Correct 103 ms 51124 KB Output is correct
7 Correct 102 ms 54420 KB Output is correct
8 Correct 844 ms 115748 KB Output is correct
9 Correct 151 ms 60348 KB Output is correct
10 Correct 529 ms 149440 KB Output is correct
11 Correct 199 ms 56888 KB Output is correct
12 Correct 99 ms 51244 KB Output is correct
13 Correct 386 ms 137072 KB Output is correct
14 Correct 77 ms 32448 KB Output is correct
15 Correct 111 ms 52032 KB Output is correct
16 Incorrect 110 ms 50952 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 34 ms 14276 KB Output is correct
2 Execution timed out 4046 ms 357584 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 34 ms 14276 KB Output is correct
2 Execution timed out 4046 ms 357584 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 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 0 ms 364 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 553 ms 94912 KB Output is correct
21 Correct 336 ms 109936 KB Output is correct
22 Correct 102 ms 54508 KB Output is correct
23 Correct 103 ms 51124 KB Output is correct
24 Correct 102 ms 54420 KB Output is correct
25 Correct 844 ms 115748 KB Output is correct
26 Correct 151 ms 60348 KB Output is correct
27 Correct 529 ms 149440 KB Output is correct
28 Correct 199 ms 56888 KB Output is correct
29 Correct 99 ms 51244 KB Output is correct
30 Correct 386 ms 137072 KB Output is correct
31 Correct 77 ms 32448 KB Output is correct
32 Correct 111 ms 52032 KB Output is correct
33 Incorrect 110 ms 50952 KB Output isn't correct
34 Halted 0 ms 0 KB -