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Submission #786108

# Submission time Handle Problem Language Result Execution time Memory
786108 2023-07-18T03:40:02 Z devariaota Jakarta Skyscrapers (APIO15_skyscraper) C++17
57 / 100
 26 ms 34636 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ull unsigned long long
#define ld long double
#define fi first
#define se second

queue<pair<int, int>> q;
vector<int> adj[30005];
int dist[2005][2005];
bool vis[2005];

int main() { 
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    int n, m;
    cin >> n >> m;
    int s, f;
    for (int i = 0; i < m; i++) {
        int u, v;
        cin >> u >> v;
        adj[u].push_back(v);
        if (i == 0) s = u;
        if (i == 1) f = u;
    }
    for (int i = 0; i <= 2000; i++) {
        for (int j = 0; j <= 2000; j++) dist[i][j] = -1;
    }
    for (auto x : adj[s]) {
        q.push({s, x});
        dist[s][x] = 0;
    }
    vis[s] = 1;
    while (!q.empty()) {
        int x = q.front().fi, d = q.front().se;
        q.pop();
        if (x == f) {
            cout << dist[x][d] << "\n";
            return 0;
        }
        if (x - d >= 0 and !vis[x - d]) {
            vis[x - d] = 1;
            for (auto u : adj[x - d]) {
                q.push({x - d, u});
                dist[x - d][u] = dist[x][d] + 1;
            }
        }
        if (x - d >= 0 and dist[x - d][d] == -1) {
            q.push({x - d, d});
            dist[x - d][d] = dist[x][d] + 1;
        }
        if (x + d < n and !vis[x + d]) {
            vis[x + d] = 1;
            for (auto u : adj[x + d]) {
                q.push({x + d, u});
                dist[x + d][u] = dist[x][d] + 1;
            }
        }
        if (x + d < n and dist[x + d][d] == -1) {
            q.push({x + d, d});
            dist[x + d][d] = dist[x][d] + 1;
        }
    }
    cout << -1 << "\n";
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:18:9: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
   18 |     int s, f;
      |         ^
skyscraper.cpp:37:9: warning: 'f' may be used uninitialized in this function [-Wmaybe-uninitialized]
   37 |         if (x == f) {
      |         ^~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 16724 KB Output is correct
2 Correct 8 ms 16720 KB Output is correct
3 Correct 8 ms 16724 KB Output is correct
4 Correct 7 ms 16724 KB Output is correct
5 Correct 7 ms 16724 KB Output is correct
6 Correct 7 ms 16724 KB Output is correct
7 Correct 7 ms 16724 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 16632 KB Output is correct
2 Correct 7 ms 16724 KB Output is correct
3 Correct 7 ms 16648 KB Output is correct
4 Correct 7 ms 16724 KB Output is correct
5 Correct 7 ms 16724 KB Output is correct
6 Correct 7 ms 16708 KB Output is correct
7 Correct 7 ms 16724 KB Output is correct
8 Correct 7 ms 16712 KB Output is correct
9 Correct 7 ms 16724 KB Output is correct
10 Correct 7 ms 16724 KB Output is correct
11 Correct 7 ms 16752 KB Output is correct
12 Correct 7 ms 16724 KB Output is correct
13 Correct 7 ms 16724 KB Output is correct
14 Correct 8 ms 16724 KB Output is correct
15 Correct 9 ms 16652 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 16724 KB Output is correct
2 Correct 7 ms 16724 KB Output is correct
3 Correct 7 ms 16724 KB Output is correct
4 Correct 7 ms 16724 KB Output is correct
5 Correct 7 ms 16724 KB Output is correct
6 Correct 7 ms 16724 KB Output is correct
7 Correct 7 ms 16652 KB Output is correct
8 Correct 7 ms 16732 KB Output is correct
9 Correct 7 ms 16724 KB Output is correct
10 Correct 7 ms 16664 KB Output is correct
11 Correct 7 ms 16724 KB Output is correct
12 Correct 8 ms 16660 KB Output is correct
13 Correct 10 ms 16652 KB Output is correct
14 Correct 7 ms 16676 KB Output is correct
15 Correct 8 ms 16684 KB Output is correct
16 Correct 7 ms 16724 KB Output is correct
17 Correct 7 ms 16792 KB Output is correct
18 Correct 7 ms 16724 KB Output is correct
19 Correct 7 ms 16724 KB Output is correct
20 Correct 8 ms 16796 KB Output is correct
21 Correct 8 ms 16656 KB Output is correct
22 Correct 7 ms 16760 KB Output is correct
23 Correct 9 ms 16768 KB Output is correct
24 Correct 8 ms 16724 KB Output is correct
25 Correct 7 ms 16724 KB Output is correct
26 Correct 8 ms 16660 KB Output is correct
27 Correct 7 ms 16660 KB Output is correct
28 Correct 9 ms 16788 KB Output is correct
29 Correct 8 ms 16748 KB Output is correct
30 Correct 7 ms 16656 KB Output is correct
31 Correct 10 ms 16740 KB Output is correct
32 Correct 7 ms 16724 KB Output is correct
33 Correct 8 ms 16724 KB Output is correct
34 Correct 8 ms 16784 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 16724 KB Output is correct
2 Correct 6 ms 16724 KB Output is correct
3 Correct 7 ms 16620 KB Output is correct
4 Correct 7 ms 16648 KB Output is correct
5 Correct 7 ms 16724 KB Output is correct
6 Correct 7 ms 16724 KB Output is correct
7 Correct 7 ms 16724 KB Output is correct
8 Correct 7 ms 16724 KB Output is correct
9 Correct 6 ms 16724 KB Output is correct
10 Correct 7 ms 16724 KB Output is correct
11 Correct 7 ms 16724 KB Output is correct
12 Correct 7 ms 16656 KB Output is correct
13 Correct 7 ms 16696 KB Output is correct
14 Correct 7 ms 16724 KB Output is correct
15 Correct 7 ms 16724 KB Output is correct
16 Correct 7 ms 16652 KB Output is correct
17 Correct 7 ms 16724 KB Output is correct
18 Correct 7 ms 16660 KB Output is correct
19 Correct 8 ms 16724 KB Output is correct
20 Correct 8 ms 16788 KB Output is correct
21 Correct 8 ms 16652 KB Output is correct
22 Correct 7 ms 16652 KB Output is correct
23 Correct 7 ms 16724 KB Output is correct
24 Correct 8 ms 16788 KB Output is correct
25 Correct 7 ms 16668 KB Output is correct
26 Correct 7 ms 16756 KB Output is correct
27 Correct 7 ms 16724 KB Output is correct
28 Correct 8 ms 16792 KB Output is correct
29 Correct 8 ms 16724 KB Output is correct
30 Correct 7 ms 16724 KB Output is correct
31 Correct 8 ms 16648 KB Output is correct
32 Correct 8 ms 16724 KB Output is correct
33 Correct 12 ms 16724 KB Output is correct
34 Correct 8 ms 16724 KB Output is correct
35 Correct 12 ms 17364 KB Output is correct
36 Correct 8 ms 16792 KB Output is correct
37 Correct 11 ms 17236 KB Output is correct
38 Correct 13 ms 17376 KB Output is correct
39 Correct 11 ms 17160 KB Output is correct
40 Correct 11 ms 17236 KB Output is correct
41 Correct 12 ms 17424 KB Output is correct
42 Correct 10 ms 17156 KB Output is correct
43 Correct 11 ms 17284 KB Output is correct
44 Correct 11 ms 17236 KB Output is correct
45 Correct 21 ms 17288 KB Output is correct
46 Correct 14 ms 17364 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 16612 KB Output is correct
2 Correct 8 ms 16656 KB Output is correct
3 Correct 7 ms 16724 KB Output is correct
4 Correct 7 ms 16668 KB Output is correct
5 Correct 7 ms 16724 KB Output is correct
6 Correct 7 ms 16652 KB Output is correct
7 Correct 7 ms 16616 KB Output is correct
8 Correct 9 ms 16668 KB Output is correct
9 Correct 7 ms 16724 KB Output is correct
10 Correct 7 ms 16724 KB Output is correct
11 Correct 7 ms 16676 KB Output is correct
12 Correct 8 ms 16724 KB Output is correct
13 Correct 7 ms 16724 KB Output is correct
14 Correct 7 ms 16724 KB Output is correct
15 Correct 7 ms 16724 KB Output is correct
16 Correct 7 ms 16724 KB Output is correct
17 Correct 8 ms 16724 KB Output is correct
18 Correct 7 ms 16724 KB Output is correct
19 Correct 7 ms 16648 KB Output is correct
20 Correct 8 ms 16724 KB Output is correct
21 Correct 9 ms 16648 KB Output is correct
22 Correct 7 ms 16724 KB Output is correct
23 Correct 7 ms 16724 KB Output is correct
24 Correct 8 ms 16672 KB Output is correct
25 Correct 7 ms 16724 KB Output is correct
26 Correct 8 ms 16724 KB Output is correct
27 Correct 7 ms 16724 KB Output is correct
28 Correct 8 ms 16724 KB Output is correct
29 Correct 8 ms 16748 KB Output is correct
30 Correct 7 ms 16724 KB Output is correct
31 Correct 7 ms 16724 KB Output is correct
32 Correct 8 ms 16736 KB Output is correct
33 Correct 9 ms 16724 KB Output is correct
34 Correct 8 ms 16724 KB Output is correct
35 Correct 13 ms 17328 KB Output is correct
36 Correct 8 ms 16724 KB Output is correct
37 Correct 11 ms 17252 KB Output is correct
38 Correct 16 ms 17424 KB Output is correct
39 Correct 12 ms 17236 KB Output is correct
40 Correct 11 ms 17272 KB Output is correct
41 Correct 13 ms 17448 KB Output is correct
42 Correct 10 ms 17152 KB Output is correct
43 Correct 10 ms 17240 KB Output is correct
44 Correct 11 ms 17236 KB Output is correct
45 Correct 17 ms 17384 KB Output is correct
46 Correct 14 ms 17284 KB Output is correct
47 Runtime error 26 ms 34636 KB Execution killed with signal 11
48 Halted 0 ms 0 KB -