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Submission #248513

# Submission time Handle Problem Language Result Execution time Memory
248513 2020-07-12T14:53:34 Z sahil_k Jakarta Skyscrapers (APIO15_skyscraper) C++14
57 / 100
 520 ms 262148 KB 
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <cmath>
#include <queue>
using namespace std;
int main () {
	int n, m;
	cin >> n >> m;
	int rt = sqrt(n);
	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});
			}
		}
	}
	long long dist[n*rt];
	bool vis[n*rt];
	for (int i=0; i<n*rt; i++) {
		dist[i] = 1e16;
		vis[i] = false;
	}
	priority_queue< pair<long long, int> > ord;
	dist[start*rt] = 0;
	ord.push({0, start*rt});
	while (ord.size() > 0) {
		pair<long long, int> cur = ord.top();
		ord.pop();
		if (vis[cur.second]) continue;
		vis[cur.second] = true;
		cur.first = -cur.first;
		for (auto i: adj[cur.second]) {
			if (!vis[i.first] && cur.first+i.second < dist[i.first]) {
				dist[i.first] = cur.first+i.second;
				ord.push({-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:43:12: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
  dist[start*rt] = 0;
       ~~~~~^~~
skyscraper.cpp:58:14: 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 1 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 256 KB Output is correct
7 Correct 1 ms 256 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 1 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 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 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 1 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 384 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 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 1 ms 512 KB Output is correct
17 Correct 6 ms 1920 KB Output is correct
18 Correct 13 ms 5888 KB Output is correct
19 Correct 16 ms 7168 KB Output is correct
20 Correct 16 ms 7168 KB Output is correct
21 Correct 2 ms 896 KB Output is correct
22 Correct 12 ms 6144 KB Output is correct
23 Correct 11 ms 5248 KB Output is correct
24 Correct 17 ms 6784 KB Output is correct
25 Correct 22 ms 7160 KB Output is correct
26 Correct 17 ms 7168 KB Output is correct
27 Correct 17 ms 7168 KB Output is correct
28 Correct 18 ms 7296 KB Output is correct
29 Correct 24 ms 7168 KB Output is correct
30 Correct 17 ms 7168 KB Output is correct
31 Correct 21 ms 7296 KB Output is correct
32 Correct 17 ms 7424 KB Output is correct
33 Correct 30 ms 7680 KB Output is correct
34 Correct 29 ms 7680 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 1 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 1 ms 256 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 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 1 ms 512 KB Output is correct
17 Correct 6 ms 1920 KB Output is correct
18 Correct 13 ms 5888 KB Output is correct
19 Correct 15 ms 7168 KB Output is correct
20 Correct 16 ms 7168 KB Output is correct
21 Correct 3 ms 896 KB Output is correct
22 Correct 13 ms 6144 KB Output is correct
23 Correct 11 ms 5248 KB Output is correct
24 Correct 16 ms 6784 KB Output is correct
25 Correct 17 ms 7168 KB Output is correct
26 Correct 17 ms 7168 KB Output is correct
27 Correct 16 ms 7168 KB Output is correct
28 Correct 18 ms 7296 KB Output is correct
29 Correct 24 ms 7168 KB Output is correct
30 Correct 17 ms 7168 KB Output is correct
31 Correct 22 ms 7296 KB Output is correct
32 Correct 20 ms 7380 KB Output is correct
33 Correct 32 ms 7844 KB Output is correct
34 Correct 29 ms 7680 KB Output is correct
35 Correct 34 ms 5112 KB Output is correct
36 Correct 10 ms 3200 KB Output is correct
37 Correct 44 ms 8440 KB Output is correct
38 Correct 51 ms 8312 KB Output is correct
39 Correct 59 ms 8412 KB Output is correct
40 Correct 54 ms 8312 KB Output is correct
41 Correct 52 ms 8388 KB Output is correct
42 Correct 34 ms 7544 KB Output is correct
43 Correct 33 ms 7540 KB Output is correct
44 Correct 43 ms 7540 KB Output is correct
45 Correct 59 ms 11256 KB Output is correct
46 Correct 59 ms 11256 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 1 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 256 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 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 1 ms 512 KB Output is correct
17 Correct 7 ms 1920 KB Output is correct
18 Correct 13 ms 5888 KB Output is correct
19 Correct 15 ms 7168 KB Output is correct
20 Correct 15 ms 7168 KB Output is correct
21 Correct 2 ms 896 KB Output is correct
22 Correct 13 ms 6144 KB Output is correct
23 Correct 12 ms 5248 KB Output is correct
24 Correct 17 ms 6784 KB Output is correct
25 Correct 16 ms 7168 KB Output is correct
26 Correct 16 ms 7168 KB Output is correct
27 Correct 17 ms 7168 KB Output is correct
28 Correct 17 ms 7296 KB Output is correct
29 Correct 24 ms 7168 KB Output is correct
30 Correct 17 ms 7168 KB Output is correct
31 Correct 20 ms 7296 KB Output is correct
32 Correct 18 ms 7424 KB Output is correct
33 Correct 30 ms 7792 KB Output is correct
34 Correct 29 ms 7680 KB Output is correct
35 Correct 39 ms 5112 KB Output is correct
36 Correct 11 ms 3200 KB Output is correct
37 Correct 44 ms 8364 KB Output is correct
38 Correct 55 ms 8312 KB Output is correct
39 Correct 50 ms 8320 KB Output is correct
40 Correct 50 ms 8312 KB Output is correct
41 Correct 50 ms 8440 KB Output is correct
42 Correct 35 ms 7544 KB Output is correct
43 Correct 36 ms 7540 KB Output is correct
44 Correct 32 ms 7540 KB Output is correct
45 Correct 52 ms 11384 KB Output is correct
46 Correct 51 ms 11256 KB Output is correct
47 Correct 431 ms 113140 KB Output is correct
48 Runtime error 520 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
49 Halted 0 ms 0 KB -