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Submission #519868

# Submission time Handle Problem Language Result Execution time Memory
519868 2022-01-27T13:00:39 Z naal Jakarta Skyscrapers (APIO15_skyscraper) C++14
100 / 100
 317 ms 112304 KB 
// https://oj.uz/problem/view/APIO15_skyscraper
#include <bits/stdc++.h>
using namespace std;
 
#define Fname ((string) "io")
#define ii pair <int, int>
#define iii pair <int, ii>
#define fi first
#define se second
#define endl '\n'
const int N = 3e4 + 5;
 
int n, m, goal;
bitset <N> d[N], used;
vector <int> a[N];
deque <iii> dq;
 
int find(int u) {
	dq.push_back({0, {u, 0}});
	while (dq.size()) {
		u = dq.front().se.fi;
		int step = dq.front().se.se, total = dq.front().fi;
		dq.pop_front();
		if (u == goal)
			return total;
		if (d[u][step])
			continue;
		d[u][step] = 1;
		if (!used[u]) {
			used[u] = 1;
			for (int &step : a[u])
				if (!d[u][step])
					dq.push_front({total, {u, step}});
		}
		if (u + step <= n && !d[u + step][step]) 
			dq.push_back({total + 1, {u + step, step}});
		if (u - step > 0 && !d[u - step][step])
			dq.push_back({total + 1, {u - step, step}});
	}
	return -1;
}
 
signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	#ifdef lan_ngu
		freopen((Fname + ".inp").c_str(), "r", stdin);
		freopen((Fname + ".out").c_str(), "w", stdout);
	#endif
 
	// int _nt; cin >> _nt;
	int _nt = 1;
	while (_nt--) {
		cin >> n >> m;
		int init;
		for (int i = 1; i <= m; i++) {
			int b, p; cin >> b >> p;
			b++;
			a[b].push_back(p);
			if (i == 1)
				init = b;
			else if (i == 2)
				goal = b;
		}	
		cout << find(init);
	}
	return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:65:20: warning: 'init' may be used uninitialized in this function [-Wmaybe-uninitialized]
   65 |   cout << find(init);
      |                    ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct
8 Correct 1 ms 968 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1228 KB Output is correct
11 Correct 1 ms 972 KB Output is correct
12 Correct 1 ms 1228 KB Output is correct
13 Correct 1 ms 1356 KB Output is correct
14 Correct 2 ms 1356 KB Output is correct
15 Correct 1 ms 1228 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 1 ms 968 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct
8 Correct 1 ms 972 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1228 KB Output is correct
11 Correct 1 ms 972 KB Output is correct
12 Correct 1 ms 1228 KB Output is correct
13 Correct 1 ms 1356 KB Output is correct
14 Correct 1 ms 1356 KB Output is correct
15 Correct 2 ms 1228 KB Output is correct
16 Correct 1 ms 972 KB Output is correct
17 Correct 2 ms 2892 KB Output is correct
18 Correct 1 ms 972 KB Output is correct
19 Correct 1 ms 972 KB Output is correct
20 Correct 5 ms 8396 KB Output is correct
21 Correct 1 ms 972 KB Output is correct
22 Correct 1 ms 972 KB Output is correct
23 Correct 4 ms 6348 KB Output is correct
24 Correct 5 ms 7500 KB Output is correct
25 Correct 2 ms 2380 KB Output is correct
26 Correct 4 ms 7244 KB Output is correct
27 Correct 5 ms 7628 KB Output is correct
28 Correct 6 ms 8396 KB Output is correct
29 Correct 6 ms 8268 KB Output is correct
30 Correct 6 ms 8396 KB Output is correct
31 Correct 9 ms 8396 KB Output is correct
32 Correct 7 ms 8268 KB Output is correct
33 Correct 11 ms 8396 KB Output is correct
34 Correct 9 ms 8396 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct
8 Correct 1 ms 972 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1228 KB Output is correct
11 Correct 1 ms 972 KB Output is correct
12 Correct 1 ms 1228 KB Output is correct
13 Correct 1 ms 1356 KB Output is correct
14 Correct 1 ms 1356 KB Output is correct
15 Correct 2 ms 1228 KB Output is correct
16 Correct 1 ms 984 KB Output is correct
17 Correct 2 ms 2892 KB Output is correct
18 Correct 1 ms 972 KB Output is correct
19 Correct 1 ms 972 KB Output is correct
20 Correct 5 ms 8396 KB Output is correct
21 Correct 1 ms 972 KB Output is correct
22 Correct 1 ms 972 KB Output is correct
23 Correct 4 ms 6348 KB Output is correct
24 Correct 6 ms 7500 KB Output is correct
25 Correct 2 ms 2380 KB Output is correct
26 Correct 5 ms 7244 KB Output is correct
27 Correct 5 ms 7680 KB Output is correct
28 Correct 7 ms 8396 KB Output is correct
29 Correct 8 ms 8268 KB Output is correct
30 Correct 6 ms 8268 KB Output is correct
31 Correct 5 ms 8268 KB Output is correct
32 Correct 6 ms 8268 KB Output is correct
33 Correct 7 ms 8396 KB Output is correct
34 Correct 6 ms 8396 KB Output is correct
35 Correct 11 ms 6588 KB Output is correct
36 Correct 3 ms 2124 KB Output is correct
37 Correct 8 ms 6220 KB Output is correct
38 Correct 10 ms 4044 KB Output is correct
39 Correct 5 ms 1228 KB Output is correct
40 Correct 6 ms 2124 KB Output is correct
41 Correct 9 ms 7696 KB Output is correct
42 Correct 8 ms 7504 KB Output is correct
43 Correct 8 ms 7884 KB Output is correct
44 Correct 11 ms 8604 KB Output is correct
45 Correct 23 ms 8944 KB Output is correct
46 Correct 13 ms 8780 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct
8 Correct 1 ms 972 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1228 KB Output is correct
11 Correct 1 ms 972 KB Output is correct
12 Correct 1 ms 1228 KB Output is correct
13 Correct 1 ms 1356 KB Output is correct
14 Correct 1 ms 1356 KB Output is correct
15 Correct 1 ms 1228 KB Output is correct
16 Correct 1 ms 972 KB Output is correct
17 Correct 2 ms 2892 KB Output is correct
18 Correct 1 ms 972 KB Output is correct
19 Correct 1 ms 972 KB Output is correct
20 Correct 5 ms 8396 KB Output is correct
21 Correct 1 ms 972 KB Output is correct
22 Correct 1 ms 972 KB Output is correct
23 Correct 4 ms 6284 KB Output is correct
24 Correct 6 ms 7460 KB Output is correct
25 Correct 2 ms 2380 KB Output is correct
26 Correct 4 ms 7244 KB Output is correct
27 Correct 5 ms 7628 KB Output is correct
28 Correct 6 ms 8396 KB Output is correct
29 Correct 6 ms 8292 KB Output is correct
30 Correct 5 ms 8268 KB Output is correct
31 Correct 5 ms 8268 KB Output is correct
32 Correct 5 ms 8268 KB Output is correct
33 Correct 7 ms 8396 KB Output is correct
34 Correct 9 ms 8356 KB Output is correct
35 Correct 11 ms 6676 KB Output is correct
36 Correct 2 ms 2124 KB Output is correct
37 Correct 9 ms 6256 KB Output is correct
38 Correct 8 ms 4020 KB Output is correct
39 Correct 5 ms 1228 KB Output is correct
40 Correct 10 ms 2188 KB Output is correct
41 Correct 10 ms 7772 KB Output is correct
42 Correct 7 ms 7500 KB Output is correct
43 Correct 7 ms 7884 KB Output is correct
44 Correct 9 ms 8544 KB Output is correct
45 Correct 16 ms 8924 KB Output is correct
46 Correct 12 ms 8780 KB Output is correct
47 Correct 18 ms 19992 KB Output is correct
48 Correct 6 ms 1640 KB Output is correct
49 Correct 7 ms 1684 KB Output is correct
50 Correct 7 ms 1484 KB Output is correct
51 Correct 51 ms 79940 KB Output is correct
52 Correct 60 ms 87116 KB Output is correct
53 Correct 17 ms 18708 KB Output is correct
54 Correct 33 ms 61116 KB Output is correct
55 Correct 51 ms 77784 KB Output is correct
56 Correct 68 ms 112276 KB Output is correct
57 Correct 2 ms 2636 KB Output is correct
58 Correct 62 ms 111708 KB Output is correct
59 Correct 68 ms 103932 KB Output is correct
60 Correct 68 ms 103880 KB Output is correct
61 Correct 67 ms 98696 KB Output is correct
62 Correct 111 ms 112304 KB Output is correct
63 Correct 135 ms 111748 KB Output is correct
64 Correct 166 ms 111940 KB Output is correct
65 Correct 276 ms 111864 KB Output is correct
66 Correct 317 ms 111812 KB Output is correct
67 Correct 214 ms 111860 KB Output is correct