oj.uz

Submission #248475

# Submission time Handle Problem Language Result Execution time Memory
248475 2020-07-12T14:17:06 Z sahil_k Jakarta Skyscrapers (APIO15_skyscraper) C++14
57 / 100
 574 ms 262148 KB 
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <cmath>
using namespace std;
int main () {
	int n, m;
	cin >> n >> m;
	int rt = sqrt(n)+1;
	vector< pair<int, int> > adj[n*rt];
	int start, end;
	for (int i=0; i<n; i++) {
		for (int j=1; j<rt; j++) {
			adj[i*rt+j].push_back({i*rt, 0});
			if (i-j >= 0) adj[i*rt+j].push_back({(i-j)*rt+j, 1});
			if (i+j < n) adj[i*rt+j].push_back({(i+j)*rt+j, 1});
		}
	}
	int bi, pi;
	for (int i=0; i<m; i++) {
		cin >> bi >> pi;
		if (i == 0) start = bi;
		if (i == 1) end = bi;
		if (pi < rt) {
			adj[bi*rt].push_back({bi*rt+pi, 0});
		} else {
			for (int j=1; j<n; j++) {
				if (bi-j*pi < 0 && bi+j*pi >= n) break;
				if (bi-j*pi >= 0) adj[bi*rt].push_back({(bi-j*pi)*rt, j});
				if (bi+j*pi < n) adj[bi*rt].push_back({(bi+j*pi)*rt, j});
			}
		}
	}
	bool vis[n*rt];
	long long dist[n*rt];
	for (int i=0; i<n*rt; i++) {
		vis[i] = false;
		dist[i] = 1e16;
	}
	set< pair<long long, int> > ord;
	dist[start*rt] = 0;
	ord.insert({0, start*rt});
	while (ord.size() > 0) {
		pair<long long, int> cur = *ord.begin();
		ord.erase(ord.begin());
		vis[cur.second] = true;
		for (auto i: adj[cur.second]) {
			if (cur.first+i.second < dist[i.first]) {
				ord.erase({dist[i.first], i.first});
				dist[i.first] = cur.first+i.second;
				ord.insert({dist[i.first], i.first});
			}
		}
	}
	if (dist[end*rt] == 1e16) {
		cout << -1 << endl;
	} else {
		cout << dist[end*rt] << endl;
	}
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:35:7: warning: variable 'vis' set but not used [-Wunused-but-set-variable]
  bool vis[n*rt];
       ^~~
skyscraper.cpp:42:12: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
  dist[start*rt] = 0;
       ~~~~~^~~
skyscraper.cpp:56:14: warning: 'end' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if (dist[end*rt] == 1e16) {
           ~~~^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 384 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 2 ms 512 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 512 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 2 ms 512 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 512 KB Output is correct
15 Correct 2 ms 512 KB Output is correct
16 Correct 1 ms 512 KB Output is correct
17 Correct 8 ms 2048 KB Output is correct
18 Correct 13 ms 6016 KB Output is correct
19 Correct 16 ms 7296 KB Output is correct
20 Correct 17 ms 7424 KB Output is correct
21 Correct 2 ms 896 KB Output is correct
22 Correct 13 ms 6272 KB Output is correct
23 Correct 15 ms 5376 KB Output is correct
24 Correct 18 ms 6912 KB Output is correct
25 Correct 26 ms 7424 KB Output is correct
26 Correct 18 ms 7424 KB Output is correct
27 Correct 17 ms 7424 KB Output is correct
28 Correct 19 ms 7424 KB Output is correct
29 Correct 33 ms 7424 KB Output is correct
30 Correct 19 ms 7296 KB Output is correct
31 Correct 24 ms 7424 KB Output is correct
32 Correct 19 ms 7552 KB Output is correct
33 Correct 36 ms 7936 KB Output is correct
34 Correct 37 ms 7928 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 2 ms 512 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 2 ms 512 KB Output is correct
15 Correct 2 ms 512 KB Output is correct
16 Correct 1 ms 512 KB Output is correct
17 Correct 7 ms 2048 KB Output is correct
18 Correct 13 ms 6016 KB Output is correct
19 Correct 15 ms 7296 KB Output is correct
20 Correct 17 ms 7424 KB Output is correct
21 Correct 2 ms 896 KB Output is correct
22 Correct 13 ms 6272 KB Output is correct
23 Correct 12 ms 5376 KB Output is correct
24 Correct 18 ms 6912 KB Output is correct
25 Correct 17 ms 7424 KB Output is correct
26 Correct 17 ms 7424 KB Output is correct
27 Correct 18 ms 7424 KB Output is correct
28 Correct 22 ms 7552 KB Output is correct
29 Correct 29 ms 7424 KB Output is correct
30 Correct 18 ms 7296 KB Output is correct
31 Correct 22 ms 7424 KB Output is correct
32 Correct 19 ms 7552 KB Output is correct
33 Correct 34 ms 7936 KB Output is correct
34 Correct 37 ms 7936 KB Output is correct
35 Correct 36 ms 5376 KB Output is correct
36 Correct 15 ms 3328 KB Output is correct
37 Correct 50 ms 8568 KB Output is correct
38 Correct 55 ms 8696 KB Output is correct
39 Correct 54 ms 8696 KB Output is correct
40 Correct 56 ms 8696 KB Output is correct
41 Correct 56 ms 8696 KB Output is correct
42 Correct 37 ms 7924 KB Output is correct
43 Correct 38 ms 7924 KB Output is correct
44 Correct 33 ms 7924 KB Output is correct
45 Correct 58 ms 11384 KB Output is correct
46 Correct 58 ms 11384 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 2 ms 512 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 512 KB Output is correct
15 Correct 2 ms 512 KB Output is correct
16 Correct 1 ms 512 KB Output is correct
17 Correct 8 ms 2176 KB Output is correct
18 Correct 13 ms 6016 KB Output is correct
19 Correct 15 ms 7296 KB Output is correct
20 Correct 17 ms 7424 KB Output is correct
21 Correct 3 ms 896 KB Output is correct
22 Correct 15 ms 6272 KB Output is correct
23 Correct 12 ms 5376 KB Output is correct
24 Correct 18 ms 6912 KB Output is correct
25 Correct 18 ms 7424 KB Output is correct
26 Correct 20 ms 7424 KB Output is correct
27 Correct 18 ms 7424 KB Output is correct
28 Correct 23 ms 7424 KB Output is correct
29 Correct 31 ms 7424 KB Output is correct
30 Correct 19 ms 7296 KB Output is correct
31 Correct 25 ms 7424 KB Output is correct
32 Correct 20 ms 7552 KB Output is correct
33 Correct 38 ms 7936 KB Output is correct
34 Correct 38 ms 7932 KB Output is correct
35 Correct 40 ms 5368 KB Output is correct
36 Correct 12 ms 3328 KB Output is correct
37 Correct 61 ms 8696 KB Output is correct
38 Correct 66 ms 8704 KB Output is correct
39 Correct 56 ms 8696 KB Output is correct
40 Correct 62 ms 8696 KB Output is correct
41 Correct 62 ms 8696 KB Output is correct
42 Correct 34 ms 7924 KB Output is correct
43 Correct 36 ms 7924 KB Output is correct
44 Correct 34 ms 7924 KB Output is correct
45 Correct 61 ms 11384 KB Output is correct
46 Correct 62 ms 11496 KB Output is correct
47 Correct 463 ms 114296 KB Output is correct
48 Runtime error 574 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
49 Halted 0 ms 0 KB -