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답안 #1026293

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1026293 2024-07-17T19:10:22 Z xnqs Jakarta Skyscrapers (APIO15_skyscraper) C++17
57 / 100
 159 ms 87548 KB 
#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
#include <utility>
#include <algorithm>
#include <cstring>

int64_t x, d;
int64_t src, dest;
int64_t dist[30005][175];
std::vector<int64_t> dogs_less_than_sqrt[30005];
std::vector<int64_t> dogs_greater_than_sqrt[30005];

int64_t bfs(int64_t src, int64_t dest) {
	memset(dist,0x3f,sizeof(dist));
	std::priority_queue<std::tuple<int64_t,int64_t,int64_t>, std::vector<std::tuple<int64_t,int64_t,int64_t>>, std::greater<std::tuple<int64_t,int64_t,int64_t>>> q;
	q.emplace(0,src,0);
	dist[src][0] = 0;

	while (!q.empty()) {
		auto [c, k, cap] = q.top();
		q.pop();

		// switch dog (<= sqrt)
		for (const auto& i : dogs_less_than_sqrt[k]) {
			if (dist[k][i]>dist[k][cap]) {
				dist[k][i] = dist[k][cap];
				q.emplace(dist[k][i], k, i);
			}
		}

		// try to go as far as possible (> sqrt)
		for (const auto& i : dogs_greater_than_sqrt[k]) {
			for (int64_t j = 1; k+j*i < x; j++) {
				if (dist[k+j*i][0]>dist[k][cap]+j) {
					dist[k+j*i][0] = dist[k][cap]+j;
					q.emplace(dist[k+j*i][0], k+j*i, 0);
				}
			}
			for (int64_t j = 1; k-j*i >= 0; j++) {
				if (dist[k-j*i][0]>dist[k][cap]+j) {
					dist[k-j*i][0] = dist[k][cap]+j;
					q.emplace(dist[k+j*i][0], k-j*i, 0);
				}
			}
		}

		// use the current dog (<= sqrt)
		if (k-cap>=0&&dist[k-cap][cap]>dist[k][cap]+1) {
			dist[k-cap][cap] = dist[k][cap]+1;
			q.emplace(dist[k-cap][cap], k-cap, cap);
		}
		if (k+cap<x&&dist[k+cap][cap]>dist[k][cap]+1) {
			dist[k+cap][cap] = dist[k][cap]+1;
			q.emplace(dist[k+cap][cap], k+cap, cap);
		}
	}

	int64_t ret = 0x3f3f3f3f3f3f3f3f;
	for (int64_t i = 0; i < 175; i++) {
		ret = std::min(ret, dist[dest][i]);
	}

	return ((ret==0x3f3f3f3f3f3f3f3f) ? -1 : ret);
}

int main() {
	std::ios_base::sync_with_stdio(false);
	std::cin.tie(NULL);
	std::cout.tie(NULL);

	std::cin >> x >> d;

	for (int64_t i = 0, a, b; i < d; i++) {
		std::cin >> a >> b;
		if (i==0) {
			src = a;
		}
		else if (i==1) {
			dest = a;
		}

		if (b<=173) {
			dogs_less_than_sqrt[a].emplace_back(b);
		}
		else {
			dogs_greater_than_sqrt[a].emplace_back(b);
		}
	}

	for (int64_t i = 1; i <= x; i++) {
		std::sort(dogs_less_than_sqrt[i].begin(), dogs_less_than_sqrt[i].end());
		std::sort(dogs_greater_than_sqrt[i].begin(), dogs_greater_than_sqrt[i].end());
		dogs_less_than_sqrt[i].erase(std::unique(dogs_less_than_sqrt[i].begin(), dogs_less_than_sqrt[i].end()),
		                             dogs_less_than_sqrt[i].end());
		dogs_greater_than_sqrt[i].erase(std::unique(dogs_greater_than_sqrt[i].begin(), dogs_greater_than_sqrt[i].end()),
		                             dogs_greater_than_sqrt[i].end());
	}

	std::cout << bfs(src,dest) << "\n";
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 42844 KB Output is correct
2 Correct 16 ms 42756 KB Output is correct
3 Correct 16 ms 42772 KB Output is correct
4 Correct 16 ms 42876 KB Output is correct
5 Correct 16 ms 42880 KB Output is correct
6 Correct 16 ms 42844 KB Output is correct
7 Correct 16 ms 42888 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 42840 KB Output is correct
2 Correct 16 ms 42840 KB Output is correct
3 Correct 16 ms 42788 KB Output is correct
4 Correct 16 ms 42844 KB Output is correct
5 Correct 18 ms 42844 KB Output is correct
6 Correct 16 ms 42932 KB Output is correct
7 Correct 16 ms 42868 KB Output is correct
8 Correct 16 ms 42840 KB Output is correct
9 Correct 16 ms 42840 KB Output is correct
10 Correct 16 ms 42972 KB Output is correct
11 Correct 17 ms 42840 KB Output is correct
12 Correct 16 ms 42840 KB Output is correct
13 Correct 16 ms 42892 KB Output is correct
14 Correct 17 ms 42840 KB Output is correct
15 Correct 17 ms 43044 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 42840 KB Output is correct
2 Correct 16 ms 42840 KB Output is correct
3 Correct 16 ms 42840 KB Output is correct
4 Correct 16 ms 42844 KB Output is correct
5 Correct 16 ms 42732 KB Output is correct
6 Correct 17 ms 42800 KB Output is correct
7 Correct 21 ms 42708 KB Output is correct
8 Correct 15 ms 42844 KB Output is correct
9 Correct 16 ms 42960 KB Output is correct
10 Correct 16 ms 42840 KB Output is correct
11 Correct 19 ms 43100 KB Output is correct
12 Correct 16 ms 42888 KB Output is correct
13 Correct 22 ms 42844 KB Output is correct
14 Correct 17 ms 43088 KB Output is correct
15 Correct 17 ms 42844 KB Output is correct
16 Correct 16 ms 42952 KB Output is correct
17 Correct 20 ms 42844 KB Output is correct
18 Correct 16 ms 42844 KB Output is correct
19 Correct 17 ms 42844 KB Output is correct
20 Correct 17 ms 42844 KB Output is correct
21 Correct 16 ms 42844 KB Output is correct
22 Correct 21 ms 42940 KB Output is correct
23 Correct 18 ms 42844 KB Output is correct
24 Correct 21 ms 43052 KB Output is correct
25 Correct 19 ms 42844 KB Output is correct
26 Correct 17 ms 42888 KB Output is correct
27 Correct 16 ms 42800 KB Output is correct
28 Correct 18 ms 43024 KB Output is correct
29 Correct 20 ms 42844 KB Output is correct
30 Correct 17 ms 42844 KB Output is correct
31 Correct 19 ms 42840 KB Output is correct
32 Correct 18 ms 42844 KB Output is correct
33 Correct 27 ms 43096 KB Output is correct
34 Correct 25 ms 42844 KB Output is correct

Subtask #4
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 16 ms 42840 KB Output is correct
2 Correct 16 ms 42840 KB Output is correct
3 Correct 16 ms 42844 KB Output is correct
4 Correct 16 ms 42844 KB Output is correct
5 Correct 16 ms 42848 KB Output is correct
6 Correct 16 ms 42844 KB Output is correct
7 Correct 17 ms 42908 KB Output is correct
8 Correct 17 ms 42840 KB Output is correct
9 Correct 16 ms 42844 KB Output is correct
10 Correct 17 ms 42844 KB Output is correct
11 Correct 17 ms 42844 KB Output is correct
12 Correct 16 ms 42764 KB Output is correct
13 Correct 19 ms 42844 KB Output is correct
14 Correct 17 ms 42844 KB Output is correct
15 Correct 17 ms 42844 KB Output is correct
16 Correct 17 ms 42844 KB Output is correct
17 Correct 19 ms 42900 KB Output is correct
18 Correct 16 ms 42844 KB Output is correct
19 Correct 16 ms 42920 KB Output is correct
20 Correct 17 ms 42840 KB Output is correct
21 Correct 17 ms 42844 KB Output is correct
22 Correct 17 ms 42952 KB Output is correct
23 Correct 18 ms 42792 KB Output is correct
24 Correct 20 ms 43056 KB Output is correct
25 Correct 21 ms 42840 KB Output is correct
26 Correct 17 ms 42772 KB Output is correct
27 Correct 16 ms 42844 KB Output is correct
28 Correct 18 ms 42844 KB Output is correct
29 Correct 21 ms 42872 KB Output is correct
30 Correct 17 ms 42776 KB Output is correct
31 Correct 19 ms 43096 KB Output is correct
32 Correct 18 ms 42844 KB Output is correct
33 Correct 26 ms 43088 KB Output is correct
34 Correct 26 ms 42844 KB Output is correct
35 Correct 48 ms 43608 KB Output is correct
36 Correct 22 ms 43096 KB Output is correct
37 Correct 46 ms 43552 KB Output is correct
38 Correct 72 ms 43612 KB Output is correct
39 Correct 54 ms 43612 KB Output is correct
40 Correct 98 ms 43612 KB Output is correct
41 Correct 85 ms 43600 KB Output is correct
42 Correct 19 ms 43228 KB Output is correct
43 Correct 19 ms 43232 KB Output is correct
44 Correct 19 ms 43284 KB Output is correct
45 Correct 90 ms 44120 KB Output is correct
46 Correct 90 ms 44184 KB Output is correct

Subtask #5
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 42844 KB Output is correct
2 Correct 16 ms 42844 KB Output is correct
3 Correct 16 ms 42844 KB Output is correct
4 Correct 16 ms 42840 KB Output is correct
5 Correct 16 ms 42844 KB Output is correct
6 Correct 16 ms 42844 KB Output is correct
7 Correct 16 ms 42840 KB Output is correct
8 Correct 16 ms 43096 KB Output is correct
9 Correct 16 ms 42744 KB Output is correct
10 Correct 16 ms 42844 KB Output is correct
11 Correct 16 ms 43052 KB Output is correct
12 Correct 16 ms 42844 KB Output is correct
13 Correct 16 ms 42996 KB Output is correct
14 Correct 16 ms 42928 KB Output is correct
15 Correct 17 ms 42844 KB Output is correct
16 Correct 16 ms 42844 KB Output is correct
17 Correct 20 ms 42872 KB Output is correct
18 Correct 16 ms 42992 KB Output is correct
19 Correct 19 ms 42828 KB Output is correct
20 Correct 17 ms 42848 KB Output is correct
21 Correct 16 ms 42844 KB Output is correct
22 Correct 16 ms 42844 KB Output is correct
23 Correct 17 ms 42992 KB Output is correct
24 Correct 21 ms 42844 KB Output is correct
25 Correct 19 ms 42844 KB Output is correct
26 Correct 17 ms 42844 KB Output is correct
27 Correct 16 ms 42924 KB Output is correct
28 Correct 17 ms 42840 KB Output is correct
29 Correct 20 ms 42844 KB Output is correct
30 Correct 16 ms 42844 KB Output is correct
31 Correct 18 ms 42844 KB Output is correct
32 Correct 17 ms 42844 KB Output is correct
33 Correct 28 ms 42844 KB Output is correct
34 Correct 26 ms 42844 KB Output is correct
35 Correct 48 ms 43612 KB Output is correct
36 Correct 19 ms 43096 KB Output is correct
37 Correct 43 ms 43548 KB Output is correct
38 Correct 66 ms 43612 KB Output is correct
39 Correct 45 ms 43612 KB Output is correct
40 Correct 96 ms 43664 KB Output is correct
41 Correct 81 ms 43608 KB Output is correct
42 Correct 19 ms 43112 KB Output is correct
43 Correct 19 ms 43232 KB Output is correct
44 Correct 19 ms 43264 KB Output is correct
45 Correct 89 ms 44112 KB Output is correct
46 Correct 95 ms 44112 KB Output is correct
47 Correct 159 ms 44124 KB Output is correct
48 Correct 20 ms 43352 KB Output is correct
49 Runtime error 56 ms 87548 KB Execution killed with signal 11
50 Halted 0 ms 0 KB -