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답안 #1026302

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1026302 2024-07-17T19:28:30 Z xnqs Jakarta Skyscrapers (APIO15_skyscraper) C++17
100 / 100
 753 ms 35300 KB 
#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
#include <utility>
#include <algorithm>
#include <cstring>

const int BLK_SIZE = 269;

int x, d;
int src, dest;
int dist[30005][BLK_SIZE+1];
std::vector<int> dogs_less_than_sqrt[30005];
std::vector<int> dogs_greater_than_sqrt[30005];
 
int bfs(int src, int dest) {
	memset(dist,0x3f,sizeof(dist));
	std::priority_queue<std::tuple<int,int,int>, std::vector<std::tuple<int,int,int>>, std::greater<std::tuple<int,int,int>>> q;
	q.emplace(0,src,0);
	dist[src][0] = 0;
 
	while (!q.empty()) {
		auto [c, k, cap] = q.top();
		q.pop();
 
		// switch dog (<= sqrt)
		if (dist[k][0]>dist[k][cap]) {
			dist[k][0] = dist[k][cap];
			q.emplace(dist[k][0], k, 0);
		}
		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 (int 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 (int 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 (cap!=0) {
			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);
			}
		}
	}
 
	int ret = 0x3f3f3f3f;
	for (int i = 0; i < BLK_SIZE; i++) {
		ret = std::min(ret, dist[dest][i]);
	}
 
	return ((ret==0x3f3f3f3f) ? -1 : ret);
}
 
int main() {
	std::ios_base::sync_with_stdio(false);
	std::cin.tie(NULL);
	std::cout.tie(NULL);
 
	std::cin >> x >> d;
 
	for (int i = 0, a, b; i < d; i++) {
		std::cin >> a >> b;
		if (i==0) {
			src = a;
		}
		else if (i==1) {
			dest = a;
		}
 
		if (b<=BLK_SIZE) {
			dogs_less_than_sqrt[a].emplace_back(b);
		}
		else {
			dogs_greater_than_sqrt[a].emplace_back(b);
		}
	}
 
	for (int i = 0; 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 10 ms 33368 KB Output is correct
2 Correct 15 ms 33368 KB Output is correct
3 Correct 9 ms 33372 KB Output is correct
4 Correct 9 ms 33372 KB Output is correct
5 Correct 9 ms 33372 KB Output is correct
6 Correct 9 ms 33516 KB Output is correct
7 Correct 9 ms 33372 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 33368 KB Output is correct
2 Correct 11 ms 33372 KB Output is correct
3 Correct 8 ms 33372 KB Output is correct
4 Correct 8 ms 33372 KB Output is correct
5 Correct 8 ms 33376 KB Output is correct
6 Correct 9 ms 33372 KB Output is correct
7 Correct 8 ms 33516 KB Output is correct
8 Correct 8 ms 33408 KB Output is correct
9 Correct 8 ms 33372 KB Output is correct
10 Correct 9 ms 33372 KB Output is correct
11 Correct 9 ms 33596 KB Output is correct
12 Correct 9 ms 33372 KB Output is correct
13 Correct 8 ms 33448 KB Output is correct
14 Correct 11 ms 33628 KB Output is correct
15 Correct 9 ms 33628 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 33428 KB Output is correct
2 Correct 9 ms 33368 KB Output is correct
3 Correct 9 ms 33416 KB Output is correct
4 Correct 9 ms 33372 KB Output is correct
5 Correct 8 ms 33508 KB Output is correct
6 Correct 9 ms 33332 KB Output is correct
7 Correct 10 ms 33368 KB Output is correct
8 Correct 9 ms 33372 KB Output is correct
9 Correct 9 ms 33372 KB Output is correct
10 Correct 9 ms 33372 KB Output is correct
11 Correct 10 ms 33628 KB Output is correct
12 Correct 11 ms 33372 KB Output is correct
13 Correct 8 ms 33372 KB Output is correct
14 Correct 11 ms 33544 KB Output is correct
15 Correct 10 ms 33448 KB Output is correct
16 Correct 9 ms 33372 KB Output is correct
17 Correct 11 ms 33600 KB Output is correct
18 Correct 9 ms 33368 KB Output is correct
19 Correct 9 ms 33372 KB Output is correct
20 Correct 9 ms 33628 KB Output is correct
21 Correct 8 ms 33496 KB Output is correct
22 Correct 9 ms 33372 KB Output is correct
23 Correct 9 ms 33372 KB Output is correct
24 Correct 10 ms 33444 KB Output is correct
25 Correct 10 ms 33368 KB Output is correct
26 Correct 11 ms 33372 KB Output is correct
27 Correct 9 ms 33372 KB Output is correct
28 Correct 10 ms 33628 KB Output is correct
29 Correct 13 ms 33604 KB Output is correct
30 Correct 10 ms 33368 KB Output is correct
31 Correct 11 ms 33608 KB Output is correct
32 Correct 12 ms 33452 KB Output is correct
33 Correct 18 ms 33628 KB Output is correct
34 Correct 22 ms 33628 KB Output is correct

Subtask #4
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 33368 KB Output is correct
2 Correct 9 ms 33368 KB Output is correct
3 Correct 9 ms 33372 KB Output is correct
4 Correct 8 ms 33372 KB Output is correct
5 Correct 9 ms 33368 KB Output is correct
6 Correct 9 ms 33368 KB Output is correct
7 Correct 9 ms 33360 KB Output is correct
8 Correct 8 ms 33368 KB Output is correct
9 Correct 12 ms 33368 KB Output is correct
10 Correct 8 ms 33404 KB Output is correct
11 Correct 10 ms 33628 KB Output is correct
12 Correct 13 ms 33372 KB Output is correct
13 Correct 9 ms 33368 KB Output is correct
14 Correct 9 ms 33628 KB Output is correct
15 Correct 10 ms 33452 KB Output is correct
16 Correct 10 ms 33352 KB Output is correct
17 Correct 11 ms 33628 KB Output is correct
18 Correct 9 ms 33368 KB Output is correct
19 Correct 9 ms 33372 KB Output is correct
20 Correct 9 ms 33628 KB Output is correct
21 Correct 8 ms 33496 KB Output is correct
22 Correct 8 ms 33368 KB Output is correct
23 Correct 10 ms 33372 KB Output is correct
24 Correct 10 ms 33628 KB Output is correct
25 Correct 10 ms 33416 KB Output is correct
26 Correct 9 ms 33372 KB Output is correct
27 Correct 9 ms 33372 KB Output is correct
28 Correct 12 ms 33628 KB Output is correct
29 Correct 15 ms 33372 KB Output is correct
30 Correct 10 ms 33372 KB Output is correct
31 Correct 14 ms 33372 KB Output is correct
32 Correct 10 ms 33368 KB Output is correct
33 Correct 19 ms 33628 KB Output is correct
34 Correct 18 ms 33624 KB Output is correct
35 Correct 25 ms 33884 KB Output is correct
36 Correct 11 ms 33628 KB Output is correct
37 Correct 34 ms 33880 KB Output is correct
38 Correct 33 ms 33880 KB Output is correct
39 Correct 33 ms 33884 KB Output is correct
40 Correct 32 ms 33880 KB Output is correct
41 Correct 32 ms 34008 KB Output is correct
42 Correct 12 ms 33628 KB Output is correct
43 Correct 11 ms 33628 KB Output is correct
44 Correct 12 ms 33624 KB Output is correct
45 Correct 66 ms 34136 KB Output is correct
46 Correct 69 ms 34136 KB Output is correct

Subtask #5
43.0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 33372 KB Output is correct
2 Correct 9 ms 33372 KB Output is correct
3 Correct 8 ms 33368 KB Output is correct
4 Correct 9 ms 33372 KB Output is correct
5 Correct 9 ms 33372 KB Output is correct
6 Correct 10 ms 33412 KB Output is correct
7 Correct 8 ms 33412 KB Output is correct
8 Correct 9 ms 33372 KB Output is correct
9 Correct 9 ms 33368 KB Output is correct
10 Correct 9 ms 33372 KB Output is correct
11 Correct 10 ms 33628 KB Output is correct
12 Correct 8 ms 33372 KB Output is correct
13 Correct 12 ms 33536 KB Output is correct
14 Correct 10 ms 33624 KB Output is correct
15 Correct 10 ms 33580 KB Output is correct
16 Correct 9 ms 33372 KB Output is correct
17 Correct 10 ms 33628 KB Output is correct
18 Correct 8 ms 33372 KB Output is correct
19 Correct 9 ms 33372 KB Output is correct
20 Correct 9 ms 33624 KB Output is correct
21 Correct 8 ms 33372 KB Output is correct
22 Correct 12 ms 33372 KB Output is correct
23 Correct 9 ms 33372 KB Output is correct
24 Correct 10 ms 33624 KB Output is correct
25 Correct 10 ms 33428 KB Output is correct
26 Correct 9 ms 33368 KB Output is correct
27 Correct 9 ms 33524 KB Output is correct
28 Correct 11 ms 33640 KB Output is correct
29 Correct 13 ms 33460 KB Output is correct
30 Correct 10 ms 33372 KB Output is correct
31 Correct 12 ms 33604 KB Output is correct
32 Correct 10 ms 33432 KB Output is correct
33 Correct 18 ms 33628 KB Output is correct
34 Correct 20 ms 33628 KB Output is correct
35 Correct 25 ms 33980 KB Output is correct
36 Correct 12 ms 33628 KB Output is correct
37 Correct 35 ms 33920 KB Output is correct
38 Correct 34 ms 33884 KB Output is correct
39 Correct 32 ms 33880 KB Output is correct
40 Correct 32 ms 33884 KB Output is correct
41 Correct 32 ms 33884 KB Output is correct
42 Correct 12 ms 33624 KB Output is correct
43 Correct 11 ms 33640 KB Output is correct
44 Correct 11 ms 33624 KB Output is correct
45 Correct 66 ms 34136 KB Output is correct
46 Correct 69 ms 34136 KB Output is correct
47 Correct 104 ms 34332 KB Output is correct
48 Correct 13 ms 33900 KB Output is correct
49 Correct 13 ms 33884 KB Output is correct
50 Correct 12 ms 33884 KB Output is correct
51 Correct 44 ms 34592 KB Output is correct
52 Correct 61 ms 34588 KB Output is correct
53 Correct 19 ms 34392 KB Output is correct
54 Correct 9 ms 33372 KB Output is correct
55 Correct 10 ms 33372 KB Output is correct
56 Correct 15 ms 34396 KB Output is correct
57 Correct 53 ms 33628 KB Output is correct
58 Correct 13 ms 33628 KB Output is correct
59 Correct 15 ms 33628 KB Output is correct
60 Correct 17 ms 33628 KB Output is correct
61 Correct 16 ms 33628 KB Output is correct
62 Correct 36 ms 34396 KB Output is correct
63 Correct 139 ms 35284 KB Output is correct
64 Correct 264 ms 35276 KB Output is correct
65 Correct 651 ms 35300 KB Output is correct
66 Correct 719 ms 34132 KB Output is correct
67 Correct 753 ms 34396 KB Output is correct