Submission #585359

# Submission time Handle Problem Language Result Execution time Memory
585359 2022-06-28T17:47:16 Z GusterGoose27 Jakarta Skyscrapers (APIO15_skyscraper) C++11
36 / 100
666 ms 262144 KB
#include <bits/stdc++.h>
 
using namespace std;
 
typedef pair<int, int> pii;
 
const int MAXN = 3e4;
const int inf = 1e9;
vector<pii> edges[MAXN];
unordered_set<int> at[MAXN];
int n, m;
int dist[MAXN];
vector<int> jump_occs[MAXN+1];
int occ_pos[MAXN+1];
vector<int> valsat[MAXN];
 
void dijkstra(int s) {
	fill(dist, dist+n, inf);
	dist[s] = 0;
	priority_queue<pii> pq;
	pq.push(pii(0, s));
	while (!pq.empty()) {
		pii p = pq.top();
		pq.pop();
		int cur = p.second;
		if (dist[cur] < p.first) continue;
		for (pii e: edges[cur]) {
			if (dist[cur]+e.second < dist[e.first]) {
				dist[e.first] = dist[cur]+e.second;
				pq.push(pii(dist[e.first], e.first));
			}
		}
	}
}
 
int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	cin >> n >> m;
	int posf;
	int poss;
	for (int i = 0; i < m; i++) {
		int x, y; cin >> x >> y;
		if (i == 1) posf = x;
		if (i == 0) poss = x;
		jump_occs[y].push_back(x);
		occ_pos[y]++;
		valsat[x].push_back(y);
		//at[x].insert(y);
	}
	for (int i = n-1; i >= 0; i--) {
		for (int p: valsat[i]) {
			occ_pos[p]--;
			int cur = occ_pos[p];
			int psize = jump_occs[p].size();
			for (int j = i+p; j < n; j += p) {
				edges[i].push_back(pii(j, (j-i)/p));
				while (cur < psize && jump_occs[p][cur] < j) cur++;
				if (cur < psize && jump_occs[p][cur] == j) break;
			}
		}
	}
	for (int i = 0; i < n; i++) {
		for (int p: valsat[i]) {
			int cur = occ_pos[p];
			for (int j = i-p; j >= 0; j -= p) {
				edges[i].push_back(pii(j, (i-j)/p));
				while (cur >= 0 && jump_occs[p][cur] > j) cur--;
				if (cur >= 0 && jump_occs[p][cur] == j) break;
			}
			occ_pos[p]++;
		}
	}
	dijkstra(poss);
	cout << ((dist[posf] == inf) ? (-1) : dist[posf]) << "\n";
	return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:73:10: warning: 'poss' may be used uninitialized in this function [-Wmaybe-uninitialized]
   73 |  dijkstra(poss);
      |  ~~~~~~~~^~~~~~
skyscraper.cpp:74:21: warning: 'posf' may be used uninitialized in this function [-Wmaybe-uninitialized]
   74 |  cout << ((dist[posf] == inf) ? (-1) : dist[posf]) << "\n";
      |            ~~~~~~~~~^
# Verdict Execution time Memory Grader output
1 Correct 3 ms 4052 KB Output is correct
2 Correct 2 ms 4052 KB Output is correct
3 Correct 3 ms 4052 KB Output is correct
4 Correct 2 ms 4052 KB Output is correct
5 Correct 2 ms 4052 KB Output is correct
6 Correct 2 ms 4052 KB Output is correct
7 Correct 2 ms 4052 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 4052 KB Output is correct
2 Correct 2 ms 4052 KB Output is correct
3 Correct 2 ms 4052 KB Output is correct
4 Correct 2 ms 4052 KB Output is correct
5 Correct 3 ms 4052 KB Output is correct
6 Correct 2 ms 4052 KB Output is correct
7 Correct 2 ms 4052 KB Output is correct
8 Correct 3 ms 4052 KB Output is correct
9 Correct 4 ms 4052 KB Output is correct
10 Correct 3 ms 4052 KB Output is correct
11 Correct 4 ms 4180 KB Output is correct
12 Correct 8 ms 6272 KB Output is correct
13 Correct 6 ms 5324 KB Output is correct
14 Correct 3 ms 4052 KB Output is correct
15 Correct 3 ms 4052 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 4052 KB Output is correct
2 Correct 2 ms 4052 KB Output is correct
3 Correct 2 ms 4052 KB Output is correct
4 Correct 3 ms 4052 KB Output is correct
5 Correct 3 ms 4052 KB Output is correct
6 Correct 2 ms 4052 KB Output is correct
7 Correct 2 ms 4052 KB Output is correct
8 Correct 2 ms 4052 KB Output is correct
9 Correct 2 ms 4052 KB Output is correct
10 Correct 3 ms 4052 KB Output is correct
11 Correct 4 ms 4180 KB Output is correct
12 Correct 9 ms 6244 KB Output is correct
13 Correct 7 ms 5324 KB Output is correct
14 Correct 3 ms 4052 KB Output is correct
15 Correct 3 ms 4180 KB Output is correct
16 Correct 4 ms 4052 KB Output is correct
17 Correct 18 ms 4308 KB Output is correct
18 Correct 3 ms 4180 KB Output is correct
19 Correct 3 ms 4180 KB Output is correct
20 Correct 36 ms 25804 KB Output is correct
21 Correct 2 ms 4052 KB Output is correct
22 Correct 3 ms 4180 KB Output is correct
23 Correct 6 ms 4180 KB Output is correct
24 Correct 27 ms 4308 KB Output is correct
25 Correct 8 ms 4180 KB Output is correct
26 Correct 64 ms 36976 KB Output is correct
27 Correct 63 ms 37116 KB Output is correct
28 Correct 3 ms 4308 KB Output is correct
29 Correct 4 ms 4692 KB Output is correct
30 Correct 3 ms 4308 KB Output is correct
31 Correct 4 ms 4436 KB Output is correct
32 Correct 4 ms 4308 KB Output is correct
33 Correct 5 ms 5332 KB Output is correct
34 Correct 5 ms 5332 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 4052 KB Output is correct
2 Correct 2 ms 4052 KB Output is correct
3 Correct 2 ms 4036 KB Output is correct
4 Correct 2 ms 4028 KB Output is correct
5 Correct 2 ms 4052 KB Output is correct
6 Correct 2 ms 4052 KB Output is correct
7 Correct 2 ms 4052 KB Output is correct
8 Correct 2 ms 4052 KB Output is correct
9 Correct 2 ms 4052 KB Output is correct
10 Correct 4 ms 4052 KB Output is correct
11 Correct 4 ms 4180 KB Output is correct
12 Correct 8 ms 6304 KB Output is correct
13 Correct 6 ms 5324 KB Output is correct
14 Correct 3 ms 4052 KB Output is correct
15 Correct 4 ms 4052 KB Output is correct
16 Correct 4 ms 4052 KB Output is correct
17 Correct 18 ms 4308 KB Output is correct
18 Correct 4 ms 4180 KB Output is correct
19 Correct 2 ms 4180 KB Output is correct
20 Correct 35 ms 25828 KB Output is correct
21 Correct 2 ms 4052 KB Output is correct
22 Correct 2 ms 4180 KB Output is correct
23 Correct 6 ms 4180 KB Output is correct
24 Correct 27 ms 4308 KB Output is correct
25 Correct 6 ms 4180 KB Output is correct
26 Correct 69 ms 37040 KB Output is correct
27 Correct 59 ms 37044 KB Output is correct
28 Correct 4 ms 4424 KB Output is correct
29 Correct 5 ms 4692 KB Output is correct
30 Correct 3 ms 4308 KB Output is correct
31 Correct 4 ms 4436 KB Output is correct
32 Correct 4 ms 4308 KB Output is correct
33 Correct 5 ms 5332 KB Output is correct
34 Correct 5 ms 5332 KB Output is correct
35 Correct 119 ms 5716 KB Output is correct
36 Correct 25 ms 4392 KB Output is correct
37 Correct 314 ms 7124 KB Output is correct
38 Correct 294 ms 6764 KB Output is correct
39 Correct 332 ms 6868 KB Output is correct
40 Correct 336 ms 6800 KB Output is correct
41 Correct 313 ms 6612 KB Output is correct
42 Runtime error 612 ms 262144 KB Execution killed with signal 9
43 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 2 ms 4040 KB Output is correct
2 Correct 3 ms 4084 KB Output is correct
3 Correct 2 ms 4052 KB Output is correct
4 Correct 3 ms 4052 KB Output is correct
5 Correct 2 ms 4084 KB Output is correct
6 Correct 3 ms 4084 KB Output is correct
7 Correct 2 ms 4052 KB Output is correct
8 Correct 3 ms 4088 KB Output is correct
9 Correct 2 ms 4052 KB Output is correct
10 Correct 3 ms 4084 KB Output is correct
11 Correct 3 ms 4096 KB Output is correct
12 Correct 8 ms 6224 KB Output is correct
13 Correct 5 ms 5324 KB Output is correct
14 Correct 3 ms 4180 KB Output is correct
15 Correct 4 ms 4180 KB Output is correct
16 Correct 3 ms 4052 KB Output is correct
17 Correct 18 ms 4308 KB Output is correct
18 Correct 3 ms 4220 KB Output is correct
19 Correct 3 ms 4180 KB Output is correct
20 Correct 37 ms 25804 KB Output is correct
21 Correct 3 ms 4164 KB Output is correct
22 Correct 4 ms 4180 KB Output is correct
23 Correct 6 ms 4180 KB Output is correct
24 Correct 26 ms 4308 KB Output is correct
25 Correct 6 ms 4308 KB Output is correct
26 Correct 68 ms 36988 KB Output is correct
27 Correct 62 ms 37108 KB Output is correct
28 Correct 3 ms 4436 KB Output is correct
29 Correct 4 ms 4692 KB Output is correct
30 Correct 4 ms 4308 KB Output is correct
31 Correct 4 ms 4436 KB Output is correct
32 Correct 4 ms 4308 KB Output is correct
33 Correct 5 ms 5372 KB Output is correct
34 Correct 5 ms 5372 KB Output is correct
35 Correct 131 ms 5916 KB Output is correct
36 Correct 25 ms 4308 KB Output is correct
37 Correct 327 ms 7244 KB Output is correct
38 Correct 294 ms 6888 KB Output is correct
39 Correct 320 ms 6992 KB Output is correct
40 Correct 346 ms 7036 KB Output is correct
41 Correct 298 ms 6832 KB Output is correct
42 Runtime error 666 ms 262144 KB Execution killed with signal 9
43 Halted 0 ms 0 KB -