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Submission #666176

# Submission time Handle Problem Language Result Execution time Memory
666176 2022-11-27T16:51:02 Z ParsaS Jakarta Skyscrapers (APIO15_skyscraper) C++17
100 / 100
 108 ms 6548 KB 
// In the name of God
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define mp make_pair
typedef long long ll;
const int N = 3e4 + 5;
int n, m;
int dis[N];
unordered_set<int> S[N];
bool vis[N];

void solve() {
    cin >> n >> m;
    int s = -1, t = -1;
    memset(dis, 63, sizeof dis);
    for (int i = 0; i < m; i++) {
        int b, p; cin >> b >> p;
        if (s != -1 && t == -1)
            t = b;
        if (s == -1)
            s = b;
        S[b].insert(p);
    }
    priority_queue<pair<int, int> > pq;
    pq.push(mp(0, s));
    dis[s] = 0;
    while (!pq.empty()) {
        int i = pq.top().se;
        pq.pop();
        if (vis[i])
            continue;
        vis[i] = true;
        int prv = -1;
        for (auto p : S[i]) {
            for (int j = i + p; j < n; j += p) {
                //cout << "check " << j << ' ' << dis[j] << '-' << dis[i] + (j - i) / p << endl;

                if (dis[j] > dis[i] + (j - i) / p) {
                    dis[j] = dis[i] + (j - i) / p;
                    pq.push(mp(-dis[j], j));
                }
                if (S[j].count(p))
                    break;
            }
            for (int j = i - p; j >= 0; j -= p) {
                //cout << "check " << j << ' ' << dis[j] << '-' << dis[i] + (i - j) / p << endl;
                if (dis[j] > dis[i] + (i - j) / p) {
                    dis[j] = dis[i] + (i - j) / p;
                    pq.push(mp(-dis[j], j));
                }
                if (S[j].count(p))
                    break;
            }
        }
    }
    cout << (dis[t] < 1e9 ? dis[t] : -1) << '\n';
}

int32_t main() {
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    solve();

    return 0;
}

Compilation message

skyscraper.cpp: In function 'void solve()':
skyscraper.cpp:36:13: warning: unused variable 'prv' [-Wunused-variable]
   36 |         int prv = -1;
      |             ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2004 KB Output is correct
2 Correct 2 ms 2004 KB Output is correct
3 Correct 1 ms 2004 KB Output is correct
4 Correct 1 ms 2004 KB Output is correct
5 Correct 1 ms 2004 KB Output is correct
6 Correct 1 ms 2004 KB Output is correct
7 Correct 2 ms 2004 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1976 KB Output is correct
2 Correct 1 ms 2004 KB Output is correct
3 Correct 1 ms 1972 KB Output is correct
4 Correct 1 ms 2004 KB Output is correct
5 Correct 1 ms 1980 KB Output is correct
6 Correct 1 ms 1976 KB Output is correct
7 Correct 1 ms 2004 KB Output is correct
8 Correct 2 ms 2004 KB Output is correct
9 Correct 1 ms 2004 KB Output is correct
10 Correct 1 ms 2004 KB Output is correct
11 Correct 2 ms 2176 KB Output is correct
12 Correct 2 ms 2004 KB Output is correct
13 Correct 2 ms 2004 KB Output is correct
14 Correct 2 ms 2132 KB Output is correct
15 Correct 2 ms 2132 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2004 KB Output is correct
2 Correct 2 ms 2004 KB Output is correct
3 Correct 2 ms 2004 KB Output is correct
4 Correct 1 ms 2004 KB Output is correct
5 Correct 2 ms 1960 KB Output is correct
6 Correct 1 ms 1968 KB Output is correct
7 Correct 1 ms 2004 KB Output is correct
8 Correct 1 ms 1976 KB Output is correct
9 Correct 2 ms 1972 KB Output is correct
10 Correct 2 ms 2104 KB Output is correct
11 Correct 2 ms 2132 KB Output is correct
12 Correct 2 ms 2004 KB Output is correct
13 Correct 2 ms 2108 KB Output is correct
14 Correct 2 ms 2132 KB Output is correct
15 Correct 2 ms 2108 KB Output is correct
16 Correct 1 ms 2108 KB Output is correct
17 Correct 2 ms 2260 KB Output is correct
18 Correct 2 ms 2132 KB Output is correct
19 Correct 2 ms 2132 KB Output is correct
20 Correct 2 ms 2368 KB Output is correct
21 Correct 2 ms 2104 KB Output is correct
22 Correct 2 ms 2104 KB Output is correct
23 Correct 2 ms 2132 KB Output is correct
24 Correct 2 ms 2260 KB Output is correct
25 Correct 3 ms 2260 KB Output is correct
26 Correct 2 ms 2004 KB Output is correct
27 Correct 2 ms 2132 KB Output is correct
28 Correct 2 ms 2372 KB Output is correct
29 Correct 3 ms 2132 KB Output is correct
30 Correct 2 ms 2100 KB Output is correct
31 Correct 2 ms 2132 KB Output is correct
32 Correct 2 ms 2132 KB Output is correct
33 Correct 4 ms 2232 KB Output is correct
34 Correct 4 ms 2260 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2004 KB Output is correct
2 Correct 1 ms 2004 KB Output is correct
3 Correct 1 ms 2004 KB Output is correct
4 Correct 2 ms 2004 KB Output is correct
5 Correct 1 ms 2004 KB Output is correct
6 Correct 1 ms 1972 KB Output is correct
7 Correct 1 ms 2004 KB Output is correct
8 Correct 1 ms 2004 KB Output is correct
9 Correct 1 ms 2004 KB Output is correct
10 Correct 2 ms 2004 KB Output is correct
11 Correct 2 ms 2132 KB Output is correct
12 Correct 2 ms 2004 KB Output is correct
13 Correct 2 ms 2104 KB Output is correct
14 Correct 2 ms 2132 KB Output is correct
15 Correct 2 ms 2132 KB Output is correct
16 Correct 1 ms 2132 KB Output is correct
17 Correct 2 ms 2260 KB Output is correct
18 Correct 2 ms 2132 KB Output is correct
19 Correct 2 ms 2132 KB Output is correct
20 Correct 2 ms 2260 KB Output is correct
21 Correct 2 ms 2132 KB Output is correct
22 Correct 1 ms 2132 KB Output is correct
23 Correct 2 ms 2132 KB Output is correct
24 Correct 4 ms 2260 KB Output is correct
25 Correct 4 ms 2260 KB Output is correct
26 Correct 2 ms 2132 KB Output is correct
27 Correct 2 ms 2132 KB Output is correct
28 Correct 4 ms 2368 KB Output is correct
29 Correct 3 ms 2132 KB Output is correct
30 Correct 2 ms 2132 KB Output is correct
31 Correct 2 ms 2132 KB Output is correct
32 Correct 2 ms 2132 KB Output is correct
33 Correct 3 ms 2260 KB Output is correct
34 Correct 4 ms 2260 KB Output is correct
35 Correct 11 ms 3392 KB Output is correct
36 Correct 3 ms 2356 KB Output is correct
37 Correct 12 ms 3156 KB Output is correct
38 Correct 15 ms 3716 KB Output is correct
39 Correct 14 ms 3796 KB Output is correct
40 Correct 15 ms 3796 KB Output is correct
41 Correct 15 ms 3720 KB Output is correct
42 Correct 5 ms 2260 KB Output is correct
43 Correct 5 ms 2240 KB Output is correct
44 Correct 5 ms 2516 KB Output is correct
45 Correct 14 ms 3668 KB Output is correct
46 Correct 14 ms 3696 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2004 KB Output is correct
2 Correct 1 ms 2004 KB Output is correct
3 Correct 1 ms 2004 KB Output is correct
4 Correct 1 ms 2004 KB Output is correct
5 Correct 2 ms 2088 KB Output is correct
6 Correct 2 ms 2004 KB Output is correct
7 Correct 1 ms 1964 KB Output is correct
8 Correct 2 ms 1976 KB Output is correct
9 Correct 1 ms 2004 KB Output is correct
10 Correct 1 ms 2004 KB Output is correct
11 Correct 2 ms 2132 KB Output is correct
12 Correct 2 ms 1984 KB Output is correct
13 Correct 2 ms 2004 KB Output is correct
14 Correct 2 ms 2132 KB Output is correct
15 Correct 2 ms 2132 KB Output is correct
16 Correct 2 ms 2132 KB Output is correct
17 Correct 2 ms 2260 KB Output is correct
18 Correct 2 ms 2152 KB Output is correct
19 Correct 2 ms 2104 KB Output is correct
20 Correct 2 ms 2260 KB Output is correct
21 Correct 2 ms 2108 KB Output is correct
22 Correct 2 ms 2104 KB Output is correct
23 Correct 3 ms 2108 KB Output is correct
24 Correct 3 ms 2260 KB Output is correct
25 Correct 3 ms 2336 KB Output is correct
26 Correct 2 ms 2112 KB Output is correct
27 Correct 2 ms 2132 KB Output is correct
28 Correct 2 ms 2368 KB Output is correct
29 Correct 3 ms 2228 KB Output is correct
30 Correct 2 ms 2132 KB Output is correct
31 Correct 3 ms 2132 KB Output is correct
32 Correct 2 ms 2100 KB Output is correct
33 Correct 4 ms 2260 KB Output is correct
34 Correct 4 ms 2260 KB Output is correct
35 Correct 12 ms 3452 KB Output is correct
36 Correct 3 ms 2368 KB Output is correct
37 Correct 12 ms 3144 KB Output is correct
38 Correct 16 ms 3768 KB Output is correct
39 Correct 16 ms 3760 KB Output is correct
40 Correct 17 ms 3776 KB Output is correct
41 Correct 15 ms 3668 KB Output is correct
42 Correct 5 ms 2260 KB Output is correct
43 Correct 5 ms 2316 KB Output is correct
44 Correct 5 ms 2516 KB Output is correct
45 Correct 14 ms 3668 KB Output is correct
46 Correct 14 ms 3668 KB Output is correct
47 Correct 27 ms 4824 KB Output is correct
48 Correct 11 ms 4564 KB Output is correct
49 Correct 9 ms 4564 KB Output is correct
50 Correct 8 ms 3924 KB Output is correct
51 Correct 32 ms 6076 KB Output is correct
52 Correct 37 ms 6088 KB Output is correct
53 Correct 22 ms 6016 KB Output is correct
54 Correct 2 ms 2260 KB Output is correct
55 Correct 3 ms 2356 KB Output is correct
56 Correct 12 ms 6484 KB Output is correct
57 Correct 27 ms 3024 KB Output is correct
58 Correct 7 ms 2388 KB Output is correct
59 Correct 8 ms 2516 KB Output is correct
60 Correct 10 ms 2516 KB Output is correct
61 Correct 9 ms 2772 KB Output is correct
62 Correct 21 ms 6548 KB Output is correct
63 Correct 47 ms 4816 KB Output is correct
64 Correct 51 ms 4748 KB Output is correct
65 Correct 68 ms 4796 KB Output is correct
66 Correct 107 ms 4724 KB Output is correct
67 Correct 108 ms 4684 KB Output is correct