Submission #510295

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
510295	2022-01-14T22:46:50 Z	thiago_bastos	Jakarta Skyscrapers (APIO15_skyscraper)	C++17	57 / 100	1000 ms	34456 KB

skyscraper

#include "bits/stdc++.h"
#include <ext/pb_ds/assoc_container.hpp>

using namespace __gnu_pbds;
using namespace std;
 
using i64 = long long;
using u64 = unsigned long long;
using i32 = int;
using u32 = unsigned;
using i16 = short;
using u16 = unsigned short;
using ld = long double;
using ii = pair<int, int>;
 
const int N = 3e4 + 100, INF = 1e9;
 
vector<int> P[N];
gp_hash_table<int, int> jumps[N];
 
void solve() {
	int n, m;
 
	cin >> n >> m;
 
	vector<int> cnt(n, INF);
	queue<ii> q;
	vector<ii> a(m);
 
	int x0 = -1, x1 = -1;
 
	for(int i = 0; i < m; ++i) {
		int b, p;
		cin >> b >> p;
		if(!i) x0 = b;
		else if(i == 1) x1 = b;
		a[i] = {p, b};
	}
 
	sort(a.begin(), a.end());
 
	for(auto [p, b] : a) {
		if(!P[b].empty() && P[b].back() == p) continue;
		for(int x = b % p; x < n; x += p) jumps[x][p] = -1;
		P[b].push_back(p);
	}
 
	while(!P[x0].empty()) {
		int k = P[x0].back();
		P[x0].pop_back();
		if(jumps[x0][k] == -1) {
			jumps[x0][k] = 0;
			q.emplace(x0, k);
		}
	}
 
	while(!q.empty()) {
		auto [x, p] = q.front();
		q.pop();
 
		int j = jumps[x][p];
	
		cnt[x] = min(cnt[x], j);
 
		if(x == x1) break;
 
		if(x >= p && jumps[x - p][p] == -1) {
			jumps[x - p][p] = 1 + j;
			q.emplace(x - p, p);
		}
 
		if(x + p < n && jumps[x + p][p] == -1) {
			jumps[x + p][p] = 1 + j;
			q.emplace(x + p, p);
		}
 
		while(!P[x].empty()) {
			int k = P[x].back();
 
			P[x].pop_back();
 
			if(x >= k && jumps[x - k][k] == -1) {
				jumps[x - k][k] = 1 + j;
				q.emplace(x - k, k);
			}
 
			if(x + k < n && jumps[x + k][k] == -1) {
				jumps[x + k][k] = 1 + j;
				q.emplace(x + k, k);
			}
		}
	}
 
	if(cnt[x1] == INF) cout << "-1\n";
	else cout << cnt[x1] << '\n';
}
 
int main() {
	ios_base :: sync_with_stdio(false);
	cin.tie(0);
	int t = 1;
	//cin >> t;
	while(t--) solve();
	return 0;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	7372 KB	Output is correct
2	Correct	5 ms	7372 KB	Output is correct
3	Correct	6 ms	7372 KB	Output is correct
4	Correct	9 ms	7372 KB	Output is correct
5	Correct	9 ms	7268 KB	Output is correct
6	Correct	5 ms	7372 KB	Output is correct
7	Correct	9 ms	7348 KB	Output is correct

Subtask #2
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	7372 KB	Output is correct
2	Correct	6 ms	7372 KB	Output is correct
3	Correct	6 ms	7372 KB	Output is correct
4	Correct	5 ms	7372 KB	Output is correct
5	Correct	7 ms	7372 KB	Output is correct
6	Correct	6 ms	7272 KB	Output is correct
7	Correct	6 ms	7372 KB	Output is correct
8	Correct	5 ms	7372 KB	Output is correct
9	Correct	7 ms	7388 KB	Output is correct
10	Correct	5 ms	7372 KB	Output is correct
11	Correct	6 ms	7584 KB	Output is correct
12	Correct	10 ms	7372 KB	Output is correct
13	Correct	6 ms	7372 KB	Output is correct
14	Correct	7 ms	7500 KB	Output is correct
15	Correct	6 ms	7500 KB	Output is correct

Subtask #3
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	7372 KB	Output is correct
2	Correct	6 ms	7372 KB	Output is correct
3	Correct	6 ms	7372 KB	Output is correct
4	Correct	6 ms	7372 KB	Output is correct
5	Correct	6 ms	7372 KB	Output is correct
6	Correct	5 ms	7372 KB	Output is correct
7	Correct	6 ms	7372 KB	Output is correct
8	Correct	6 ms	7372 KB	Output is correct
9	Correct	8 ms	7372 KB	Output is correct
10	Correct	6 ms	7372 KB	Output is correct
11	Correct	7 ms	7500 KB	Output is correct
12	Correct	7 ms	7372 KB	Output is correct
13	Correct	10 ms	7336 KB	Output is correct
14	Correct	7 ms	7500 KB	Output is correct
15	Correct	7 ms	7500 KB	Output is correct
16	Correct	7 ms	7500 KB	Output is correct
17	Correct	9 ms	7884 KB	Output is correct
18	Correct	7 ms	7500 KB	Output is correct
19	Correct	7 ms	7500 KB	Output is correct
20	Correct	41 ms	7412 KB	Output is correct
21	Correct	7 ms	7500 KB	Output is correct
22	Correct	7 ms	7512 KB	Output is correct
23	Correct	9 ms	7564 KB	Output is correct
24	Correct	9 ms	7776 KB	Output is correct
25	Correct	7 ms	7632 KB	Output is correct
26	Correct	7 ms	7500 KB	Output is correct
27	Correct	7 ms	7500 KB	Output is correct
28	Correct	11 ms	8012 KB	Output is correct
29	Correct	18 ms	9616 KB	Output is correct
30	Correct	9 ms	7944 KB	Output is correct
31	Correct	13 ms	8832 KB	Output is correct
32	Correct	9 ms	8044 KB	Output is correct
33	Correct	19 ms	10924 KB	Output is correct
34	Correct	17 ms	10856 KB	Output is correct

Subtask #4
21.0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	7372 KB	Output is correct
2	Correct	6 ms	7372 KB	Output is correct
3	Correct	5 ms	7372 KB	Output is correct
4	Correct	6 ms	7256 KB	Output is correct
5	Correct	6 ms	7244 KB	Output is correct
6	Correct	5 ms	7372 KB	Output is correct
7	Correct	10 ms	7372 KB	Output is correct
8	Correct	6 ms	7260 KB	Output is correct
9	Correct	7 ms	7316 KB	Output is correct
10	Correct	10 ms	7464 KB	Output is correct
11	Correct	8 ms	7500 KB	Output is correct
12	Correct	9 ms	7372 KB	Output is correct
13	Correct	6 ms	7372 KB	Output is correct
14	Correct	7 ms	7600 KB	Output is correct
15	Correct	7 ms	7592 KB	Output is correct
16	Correct	7 ms	7500 KB	Output is correct
17	Correct	8 ms	7956 KB	Output is correct
18	Correct	10 ms	7500 KB	Output is correct
19	Correct	10 ms	7500 KB	Output is correct
20	Correct	47 ms	7428 KB	Output is correct
21	Correct	9 ms	7504 KB	Output is correct
22	Correct	6 ms	7500 KB	Output is correct
23	Correct	7 ms	7512 KB	Output is correct
24	Correct	8 ms	7800 KB	Output is correct
25	Correct	7 ms	7500 KB	Output is correct
26	Correct	9 ms	7500 KB	Output is correct
27	Correct	9 ms	7500 KB	Output is correct
28	Correct	10 ms	8044 KB	Output is correct
29	Correct	12 ms	9676 KB	Output is correct
30	Correct	8 ms	8012 KB	Output is correct
31	Correct	10 ms	8748 KB	Output is correct
32	Correct	8 ms	8012 KB	Output is correct
33	Correct	17 ms	10828 KB	Output is correct
34	Correct	15 ms	10828 KB	Output is correct
35	Correct	23 ms	12084 KB	Output is correct
36	Correct	9 ms	8020 KB	Output is correct
37	Correct	26 ms	13980 KB	Output is correct
38	Correct	29 ms	14120 KB	Output is correct
39	Correct	31 ms	14156 KB	Output is correct
40	Correct	28 ms	14168 KB	Output is correct
41	Correct	30 ms	14220 KB	Output is correct
42	Correct	10 ms	7804 KB	Output is correct
43	Correct	10 ms	7704 KB	Output is correct
44	Correct	44 ms	7772 KB	Output is correct
45	Correct	56 ms	20796 KB	Output is correct
46	Correct	44 ms	20736 KB	Output is correct

Subtask #5
0 / 43.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	7372 KB	Output is correct
2	Correct	5 ms	7372 KB	Output is correct
3	Correct	6 ms	7372 KB	Output is correct
4	Correct	5 ms	7372 KB	Output is correct
5	Correct	5 ms	7372 KB	Output is correct
6	Correct	6 ms	7372 KB	Output is correct
7	Correct	6 ms	7372 KB	Output is correct
8	Correct	5 ms	7372 KB	Output is correct
9	Correct	6 ms	7372 KB	Output is correct
10	Correct	6 ms	7408 KB	Output is correct
11	Correct	11 ms	7500 KB	Output is correct
12	Correct	6 ms	7372 KB	Output is correct
13	Correct	6 ms	7372 KB	Output is correct
14	Correct	7 ms	7500 KB	Output is correct
15	Correct	7 ms	7596 KB	Output is correct
16	Correct	6 ms	7500 KB	Output is correct
17	Correct	8 ms	7872 KB	Output is correct
18	Correct	7 ms	7452 KB	Output is correct
19	Correct	7 ms	7408 KB	Output is correct
20	Correct	39 ms	7372 KB	Output is correct
21	Correct	6 ms	7500 KB	Output is correct
22	Correct	6 ms	7500 KB	Output is correct
23	Correct	7 ms	7500 KB	Output is correct
24	Correct	8 ms	7796 KB	Output is correct
25	Correct	7 ms	7628 KB	Output is correct
26	Correct	7 ms	7500 KB	Output is correct
27	Correct	7 ms	7548 KB	Output is correct
28	Correct	10 ms	8108 KB	Output is correct
29	Correct	12 ms	9676 KB	Output is correct
30	Correct	8 ms	7964 KB	Output is correct
31	Correct	11 ms	8780 KB	Output is correct
32	Correct	8 ms	7920 KB	Output is correct
33	Correct	17 ms	10828 KB	Output is correct
34	Correct	14 ms	10904 KB	Output is correct
35	Correct	23 ms	12056 KB	Output is correct
36	Correct	9 ms	8072 KB	Output is correct
37	Correct	26 ms	13980 KB	Output is correct
38	Correct	29 ms	14156 KB	Output is correct
39	Correct	28 ms	14156 KB	Output is correct
40	Correct	29 ms	14092 KB	Output is correct
41	Correct	30 ms	14164 KB	Output is correct
42	Correct	10 ms	7800 KB	Output is correct
43	Correct	10 ms	7744 KB	Output is correct
44	Correct	43 ms	7648 KB	Output is correct
45	Correct	56 ms	20688 KB	Output is correct
46	Correct	45 ms	20704 KB	Output is correct
47	Correct	100 ms	34456 KB	Output is correct
48	Correct	43 ms	14792 KB	Output is correct
49	Correct	32 ms	11540 KB	Output is correct
50	Correct	29 ms	11264 KB	Output is correct
51	Correct	72 ms	17464 KB	Output is correct
52	Correct	76 ms	18364 KB	Output is correct
53	Correct	24 ms	9532 KB	Output is correct
54	Correct	7 ms	7500 KB	Output is correct
55	Correct	12 ms	7500 KB	Output is correct
56	Execution timed out	1087 ms	8028 KB	Time limit exceeded
57	Halted	0 ms	0 KB	-

Submission #510295

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 12.0 / 12.0

Subtask #3 14.0 / 14.0

Subtask #4 21.0 / 21.0

Subtask #5 0 / 43.0

Subtask #1
10.0 / 10.0

Subtask #2
12.0 / 12.0

Subtask #3
14.0 / 14.0

Subtask #4
21.0 / 21.0

Subtask #5
0 / 43.0