oj.uz

Submission #248514

# Submission time Handle Problem Language Result Execution time Memory
248514 2020-07-12T14:57:58 Z sahil_k Jakarta Skyscrapers (APIO15_skyscraper) C++14
57 / 100
 435 ms 262144 KB 
#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <cmath>
#include <queue>
using namespace std;
int n, m;
vector< pair<int, int> > adj[2000000];
long long dist[2000000];
bool vis[2000000];
priority_queue< pair<long long, int> > ord;
int main () {
	cin >> n >> m;
	int rt = sqrt(n);
	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});
			}
		}
	}
	for (int i=0; i<n*rt; i++) {
		dist[i] = 1e16;
		vis[i] = false;
	}
	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:58:14: warning: 'end' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if (dist[end*rt] == 1e16) {
           ~~~^~~
skyscraper.cpp:43:12: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
  dist[start*rt] = 0;
       ~~~~~^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 47232 KB Output is correct
2 Correct 27 ms 47232 KB Output is correct
3 Correct 26 ms 47232 KB Output is correct
4 Correct 26 ms 47232 KB Output is correct
5 Correct 26 ms 47232 KB Output is correct
6 Correct 26 ms 47232 KB Output is correct
7 Correct 26 ms 47232 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 47232 KB Output is correct
2 Correct 26 ms 47232 KB Output is correct
3 Correct 27 ms 47232 KB Output is correct
4 Correct 28 ms 47224 KB Output is correct
5 Correct 27 ms 47256 KB Output is correct
6 Correct 28 ms 47232 KB Output is correct
7 Correct 28 ms 47232 KB Output is correct
8 Correct 31 ms 47480 KB Output is correct
9 Correct 28 ms 47352 KB Output is correct
10 Correct 28 ms 47352 KB Output is correct
11 Correct 29 ms 47360 KB Output is correct
12 Correct 30 ms 47352 KB Output is correct
13 Correct 29 ms 47360 KB Output is correct
14 Correct 30 ms 47352 KB Output is correct
15 Correct 29 ms 47360 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 47232 KB Output is correct
2 Correct 28 ms 47268 KB Output is correct
3 Correct 28 ms 47224 KB Output is correct
4 Correct 28 ms 47300 KB Output is correct
5 Correct 28 ms 47232 KB Output is correct
6 Correct 28 ms 47224 KB Output is correct
7 Correct 28 ms 47232 KB Output is correct
8 Correct 30 ms 47352 KB Output is correct
9 Correct 29 ms 47352 KB Output is correct
10 Correct 28 ms 47360 KB Output is correct
11 Correct 29 ms 47360 KB Output is correct
12 Correct 30 ms 47360 KB Output is correct
13 Correct 30 ms 47360 KB Output is correct
14 Correct 30 ms 47360 KB Output is correct
15 Correct 31 ms 47356 KB Output is correct
16 Correct 29 ms 47488 KB Output is correct
17 Correct 34 ms 48508 KB Output is correct
18 Correct 39 ms 51192 KB Output is correct
19 Correct 42 ms 52088 KB Output is correct
20 Correct 51 ms 52088 KB Output is correct
21 Correct 32 ms 47744 KB Output is correct
22 Correct 39 ms 51320 KB Output is correct
23 Correct 38 ms 50680 KB Output is correct
24 Correct 50 ms 51808 KB Output is correct
25 Correct 42 ms 52088 KB Output is correct
26 Correct 43 ms 52096 KB Output is correct
27 Correct 45 ms 52216 KB Output is correct
28 Correct 48 ms 52216 KB Output is correct
29 Correct 49 ms 52088 KB Output is correct
30 Correct 45 ms 52088 KB Output is correct
31 Correct 48 ms 52216 KB Output is correct
32 Correct 54 ms 52344 KB Output is correct
33 Correct 57 ms 52600 KB Output is correct
34 Correct 60 ms 52600 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 47232 KB Output is correct
2 Correct 28 ms 47232 KB Output is correct
3 Correct 29 ms 47232 KB Output is correct
4 Correct 29 ms 47360 KB Output is correct
5 Correct 37 ms 47232 KB Output is correct
6 Correct 37 ms 47224 KB Output is correct
7 Correct 28 ms 47224 KB Output is correct
8 Correct 28 ms 47232 KB Output is correct
9 Correct 28 ms 47360 KB Output is correct
10 Correct 28 ms 47352 KB Output is correct
11 Correct 29 ms 47360 KB Output is correct
12 Correct 29 ms 47360 KB Output is correct
13 Correct 30 ms 47352 KB Output is correct
14 Correct 29 ms 47376 KB Output is correct
15 Correct 29 ms 47360 KB Output is correct
16 Correct 28 ms 47488 KB Output is correct
17 Correct 33 ms 48512 KB Output is correct
18 Correct 39 ms 51192 KB Output is correct
19 Correct 41 ms 52088 KB Output is correct
20 Correct 44 ms 52096 KB Output is correct
21 Correct 29 ms 47744 KB Output is correct
22 Correct 38 ms 51328 KB Output is correct
23 Correct 38 ms 50688 KB Output is correct
24 Correct 41 ms 51832 KB Output is correct
25 Correct 42 ms 52088 KB Output is correct
26 Correct 43 ms 52352 KB Output is correct
27 Correct 42 ms 52088 KB Output is correct
28 Correct 42 ms 52216 KB Output is correct
29 Correct 49 ms 52088 KB Output is correct
30 Correct 58 ms 52068 KB Output is correct
31 Correct 45 ms 52216 KB Output is correct
32 Correct 43 ms 52480 KB Output is correct
33 Correct 56 ms 52728 KB Output is correct
34 Correct 56 ms 52600 KB Output is correct
35 Correct 61 ms 50936 KB Output is correct
36 Correct 36 ms 49272 KB Output is correct
37 Correct 70 ms 53368 KB Output is correct
38 Correct 77 ms 53240 KB Output is correct
39 Correct 76 ms 53240 KB Output is correct
40 Correct 75 ms 53240 KB Output is correct
41 Correct 76 ms 53240 KB Output is correct
42 Correct 58 ms 52428 KB Output is correct
43 Correct 60 ms 52468 KB Output is correct
44 Correct 56 ms 52468 KB Output is correct
45 Correct 77 ms 56184 KB Output is correct
46 Correct 79 ms 56188 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 47232 KB Output is correct
2 Correct 28 ms 47232 KB Output is correct
3 Correct 31 ms 47360 KB Output is correct
4 Correct 29 ms 47348 KB Output is correct
5 Correct 28 ms 47232 KB Output is correct
6 Correct 28 ms 47232 KB Output is correct
7 Correct 28 ms 47232 KB Output is correct
8 Correct 29 ms 47360 KB Output is correct
9 Correct 28 ms 47352 KB Output is correct
10 Correct 28 ms 47360 KB Output is correct
11 Correct 30 ms 47480 KB Output is correct
12 Correct 30 ms 47352 KB Output is correct
13 Correct 30 ms 47352 KB Output is correct
14 Correct 29 ms 47360 KB Output is correct
15 Correct 29 ms 47352 KB Output is correct
16 Correct 29 ms 47484 KB Output is correct
17 Correct 33 ms 48512 KB Output is correct
18 Correct 38 ms 51192 KB Output is correct
19 Correct 40 ms 52088 KB Output is correct
20 Correct 41 ms 52160 KB Output is correct
21 Correct 30 ms 47736 KB Output is correct
22 Correct 38 ms 51320 KB Output is correct
23 Correct 40 ms 50680 KB Output is correct
24 Correct 41 ms 51832 KB Output is correct
25 Correct 44 ms 52088 KB Output is correct
26 Correct 42 ms 52088 KB Output is correct
27 Correct 41 ms 52088 KB Output is correct
28 Correct 43 ms 52216 KB Output is correct
29 Correct 49 ms 52088 KB Output is correct
30 Correct 43 ms 52088 KB Output is correct
31 Correct 47 ms 52216 KB Output is correct
32 Correct 44 ms 52344 KB Output is correct
33 Correct 56 ms 52600 KB Output is correct
34 Correct 56 ms 52600 KB Output is correct
35 Correct 61 ms 50936 KB Output is correct
36 Correct 38 ms 49280 KB Output is correct
37 Correct 72 ms 53368 KB Output is correct
38 Correct 74 ms 53240 KB Output is correct
39 Correct 76 ms 53240 KB Output is correct
40 Correct 77 ms 53240 KB Output is correct
41 Correct 75 ms 53240 KB Output is correct
42 Correct 58 ms 52600 KB Output is correct
43 Correct 57 ms 52468 KB Output is correct
44 Correct 59 ms 52468 KB Output is correct
45 Correct 78 ms 56184 KB Output is correct
46 Correct 84 ms 56184 KB Output is correct
47 Correct 435 ms 127956 KB Output is correct
48 Runtime error 433 ms 262144 KB Execution killed with signal 11 (could be triggered by violating memory limits)
49 Halted 0 ms 0 KB -