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Submission #48488

# Submission time Handle Problem Language Result Execution time Memory
48488 2018-05-14T13:17:40 Z Kmcode Jakarta Skyscrapers (APIO15_skyscraper) C++14
100 / 100
 834 ms 176180 KB 
#include "bits/stdc++.h"
using namespace std;

int n;
int m;

map<pair<int, int>, vector<int> > mp;
vector<pair<int, int> > bs;
vector<int> con;
vector<int> dist;

vector<int> g[300002];

deque<int> q;

int main() {
	cin >> n >> m;
	for (int i = 0; i < n; i++)bs.push_back(make_pair(-1, -1));
	for (int i = 0; i < n; i++)con.push_back(-1);
	for (int i = 0; i < n; i++)dist.push_back(-1);
	int idx = n;
	int star = -1;
	int en = -1;
	for (int i = 0; i < m; i++) {
		int b, p;
		scanf("%d%d", &b, &p);
		if (i == 0)star = b;
		if (i == 1)en = b;
		pair<int, int> base = make_pair(b%p, p);
		if (!mp.count(base)) {
			mp[base].clear();
			auto &v = mp[base];
			for (int pos = base.first; pos < n; pos += p) {
				v.push_back(idx);
				idx++;
				bs.push_back(base);
				con.push_back(pos);
				dist.push_back(-1);
			}
		}
		int ID = (b - base.first) / p;
		g[b].push_back(mp[base][ID]);
	}
	dist[star] = 0;
	q.push_back(star);
	while (!q.empty()) {
		int b = q.front();
		q.pop_front();
		if (b < n) {
			for (int go : g[b]) {
				if (dist[go] == -1) {
					dist[go] = dist[b];
					q.push_front(go);
				}
			}
		}
		else {
			if (con[b] != -1) {
				if (dist[con[b]] == -1) {
					dist[con[b]] = dist[b];
					q.push_front(con[b]);
				}
			}
			
				if (bs[b] == bs[b - 1]&&dist[b-1]==-1) {
					dist[b - 1] = dist[b] + 1;
					q.push_back(b - 1);
				}
				if (b + 1 < bs.size() && bs[b] == bs[b + 1] && dist[b + 1] == -1) {
					dist[b + 1] = dist[b] + 1;
					q.push_back(b + 1);
				}
		}
	}
	printf("%d\n", dist[en]);
	return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:69:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (b + 1 < bs.size() && bs[b] == bs[b + 1] && dist[b + 1] == -1) {
         ~~~~~~^~~~~~~~~~~
skyscraper.cpp:26:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &b, &p);
   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 7288 KB Output is correct
2 Correct 7 ms 7400 KB Output is correct
3 Correct 7 ms 7480 KB Output is correct
4 Correct 8 ms 7620 KB Output is correct
5 Correct 7 ms 7620 KB Output is correct
6 Correct 7 ms 7620 KB Output is correct
7 Correct 7 ms 7620 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 7664 KB Output is correct
2 Correct 7 ms 7692 KB Output is correct
3 Correct 7 ms 7696 KB Output is correct
4 Correct 7 ms 7696 KB Output is correct
5 Correct 7 ms 7704 KB Output is correct
6 Correct 7 ms 7704 KB Output is correct
7 Correct 7 ms 7704 KB Output is correct
8 Correct 7 ms 7716 KB Output is correct
9 Correct 7 ms 7716 KB Output is correct
10 Correct 7 ms 7852 KB Output is correct
11 Correct 9 ms 8048 KB Output is correct
12 Correct 7 ms 8048 KB Output is correct
13 Correct 8 ms 8048 KB Output is correct
14 Correct 10 ms 8048 KB Output is correct
15 Correct 9 ms 8048 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 8048 KB Output is correct
2 Correct 7 ms 8048 KB Output is correct
3 Correct 7 ms 8048 KB Output is correct
4 Correct 8 ms 8048 KB Output is correct
5 Correct 7 ms 8048 KB Output is correct
6 Correct 7 ms 8048 KB Output is correct
7 Correct 7 ms 8048 KB Output is correct
8 Correct 7 ms 8048 KB Output is correct
9 Correct 7 ms 8048 KB Output is correct
10 Correct 8 ms 8048 KB Output is correct
11 Correct 10 ms 8100 KB Output is correct
12 Correct 8 ms 8100 KB Output is correct
13 Correct 8 ms 8100 KB Output is correct
14 Correct 13 ms 8236 KB Output is correct
15 Correct 10 ms 8248 KB Output is correct
16 Correct 8 ms 8248 KB Output is correct
17 Correct 10 ms 8348 KB Output is correct
18 Correct 9 ms 8348 KB Output is correct
19 Correct 8 ms 8348 KB Output is correct
20 Correct 8 ms 8348 KB Output is correct
21 Correct 9 ms 8348 KB Output is correct
22 Correct 8 ms 8348 KB Output is correct
23 Correct 9 ms 8348 KB Output is correct
24 Correct 10 ms 8508 KB Output is correct
25 Correct 10 ms 8508 KB Output is correct
26 Correct 9 ms 8508 KB Output is correct
27 Correct 8 ms 8508 KB Output is correct
28 Correct 12 ms 8756 KB Output is correct
29 Correct 12 ms 9480 KB Output is correct
30 Correct 8 ms 9480 KB Output is correct
31 Correct 10 ms 9480 KB Output is correct
32 Correct 10 ms 9480 KB Output is correct
33 Correct 16 ms 11036 KB Output is correct
34 Correct 16 ms 11052 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11052 KB Output is correct
2 Correct 7 ms 11052 KB Output is correct
3 Correct 7 ms 11052 KB Output is correct
4 Correct 7 ms 11052 KB Output is correct
5 Correct 7 ms 11052 KB Output is correct
6 Correct 7 ms 11052 KB Output is correct
7 Correct 8 ms 11052 KB Output is correct
8 Correct 7 ms 11052 KB Output is correct
9 Correct 7 ms 11052 KB Output is correct
10 Correct 7 ms 11052 KB Output is correct
11 Correct 9 ms 11052 KB Output is correct
12 Correct 7 ms 11052 KB Output is correct
13 Correct 7 ms 11052 KB Output is correct
14 Correct 12 ms 11052 KB Output is correct
15 Correct 9 ms 11052 KB Output is correct
16 Correct 8 ms 11052 KB Output is correct
17 Correct 10 ms 11052 KB Output is correct
18 Correct 11 ms 11052 KB Output is correct
19 Correct 8 ms 11052 KB Output is correct
20 Correct 8 ms 11052 KB Output is correct
21 Correct 9 ms 11052 KB Output is correct
22 Correct 8 ms 11052 KB Output is correct
23 Correct 9 ms 11052 KB Output is correct
24 Correct 10 ms 11052 KB Output is correct
25 Correct 11 ms 11052 KB Output is correct
26 Correct 8 ms 11052 KB Output is correct
27 Correct 8 ms 11052 KB Output is correct
28 Correct 11 ms 11052 KB Output is correct
29 Correct 12 ms 11052 KB Output is correct
30 Correct 8 ms 11052 KB Output is correct
31 Correct 10 ms 11052 KB Output is correct
32 Correct 10 ms 11052 KB Output is correct
33 Correct 17 ms 11296 KB Output is correct
34 Correct 17 ms 11376 KB Output is correct
35 Correct 50 ms 13568 KB Output is correct
36 Correct 14 ms 13568 KB Output is correct
37 Correct 54 ms 14564 KB Output is correct
38 Correct 68 ms 15788 KB Output is correct
39 Correct 64 ms 16036 KB Output is correct
40 Correct 63 ms 16316 KB Output is correct
41 Correct 64 ms 16532 KB Output is correct
42 Correct 14 ms 16532 KB Output is correct
43 Correct 14 ms 16532 KB Output is correct
44 Correct 14 ms 16532 KB Output is correct
45 Correct 90 ms 24228 KB Output is correct
46 Correct 93 ms 24392 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 24392 KB Output is correct
2 Correct 7 ms 24392 KB Output is correct
3 Correct 7 ms 24392 KB Output is correct
4 Correct 7 ms 24392 KB Output is correct
5 Correct 7 ms 24392 KB Output is correct
6 Correct 7 ms 24392 KB Output is correct
7 Correct 7 ms 24392 KB Output is correct
8 Correct 7 ms 24392 KB Output is correct
9 Correct 7 ms 24392 KB Output is correct
10 Correct 8 ms 24392 KB Output is correct
11 Correct 9 ms 24392 KB Output is correct
12 Correct 7 ms 24392 KB Output is correct
13 Correct 8 ms 24392 KB Output is correct
14 Correct 9 ms 24392 KB Output is correct
15 Correct 10 ms 24392 KB Output is correct
16 Correct 8 ms 24392 KB Output is correct
17 Correct 10 ms 24392 KB Output is correct
18 Correct 9 ms 24392 KB Output is correct
19 Correct 8 ms 24392 KB Output is correct
20 Correct 8 ms 24392 KB Output is correct
21 Correct 8 ms 24392 KB Output is correct
22 Correct 8 ms 24392 KB Output is correct
23 Correct 9 ms 24392 KB Output is correct
24 Correct 11 ms 24392 KB Output is correct
25 Correct 10 ms 24392 KB Output is correct
26 Correct 8 ms 24392 KB Output is correct
27 Correct 8 ms 24392 KB Output is correct
28 Correct 11 ms 24392 KB Output is correct
29 Correct 11 ms 24392 KB Output is correct
30 Correct 8 ms 24392 KB Output is correct
31 Correct 10 ms 24392 KB Output is correct
32 Correct 9 ms 24392 KB Output is correct
33 Correct 17 ms 24392 KB Output is correct
34 Correct 17 ms 24392 KB Output is correct
35 Correct 51 ms 24392 KB Output is correct
36 Correct 14 ms 24392 KB Output is correct
37 Correct 49 ms 24392 KB Output is correct
38 Correct 64 ms 24392 KB Output is correct
39 Correct 63 ms 24392 KB Output is correct
40 Correct 63 ms 24392 KB Output is correct
41 Correct 63 ms 24392 KB Output is correct
42 Correct 15 ms 24392 KB Output is correct
43 Correct 14 ms 24392 KB Output is correct
44 Correct 14 ms 24392 KB Output is correct
45 Correct 88 ms 27072 KB Output is correct
46 Correct 90 ms 27284 KB Output is correct
47 Correct 121 ms 34524 KB Output is correct
48 Correct 51 ms 34524 KB Output is correct
49 Correct 46 ms 34524 KB Output is correct
50 Correct 35 ms 34524 KB Output is correct
51 Correct 89 ms 34524 KB Output is correct
52 Correct 92 ms 34524 KB Output is correct
53 Correct 60 ms 34524 KB Output is correct
54 Correct 9 ms 34524 KB Output is correct
55 Correct 11 ms 34524 KB Output is correct
56 Correct 21 ms 34524 KB Output is correct
57 Correct 38 ms 34524 KB Output is correct
58 Correct 16 ms 34524 KB Output is correct
59 Correct 19 ms 34524 KB Output is correct
60 Correct 22 ms 34524 KB Output is correct
61 Correct 24 ms 34524 KB Output is correct
62 Correct 86 ms 34524 KB Output is correct
63 Correct 288 ms 86112 KB Output is correct
64 Correct 338 ms 94524 KB Output is correct
65 Correct 473 ms 114252 KB Output is correct
66 Correct 834 ms 176108 KB Output is correct
67 Correct 828 ms 176180 KB Output is correct