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Submission #1059018

# Submission time Handle Problem Language Result Execution time Memory
1059018 2024-08-14T16:05:20 Z sammyuri Jakarta Skyscrapers (APIO15_skyscraper) C++17
100 / 100
 31 ms 15572 KB 
#include <bits/stdc++.h>
using namespace std;

/*
we run dijkstra
let B = 100
for all doges that have p >= b, just simulate the jumps
how do we deal with the "small" doges??
note that the answer is never more than 30000...
*/

const int SMALL = 100;
const int MAXN = 30000;
const int INF = 1e9;
int mintime[MAXN][SMALL + 1];
int dist[MAXN];
vector<int> doges[MAXN];
priority_queue<pair<int, int>> pq;

int main() {
    int n; cin >> n;
    int m; cin >> m;
    for (int i = 0; i < n; i ++)
        for (int j = 1; j <= SMALL; j ++)
            mintime[i][j] = INF;
    for (int i = 0; i < n; i ++)
        dist[i] = INF;
    int startnode = -1, target = -1;
    for (int i = 0; i < m; i ++) {
        int b, p; cin >> b >> p;
        if (i == 0)
            startnode = b;
        else if (i == 1)
            target = b;
        doges[b].push_back(p);
    }
    if (startnode == target) {
        cout << 0 << endl; return 0;
    }
    pq.push({0, startnode});
    dist[startnode] = 0;
    while (pq.size()) {
        pair<int, int> xx = pq.top(); pq.pop();
        int t = -xx.first;
        int curnode = xx.second;
        if (dist[curnode] != t)
            continue;
        for (auto doge : doges[curnode]) {
            // big doge
            if (doge > SMALL) {
                int extratime = 0;
                for (int j = curnode - doge; j >= 0; j -= doge) {
                    extratime ++;
                    if (dist[j] > extratime + t) {
                        dist[j] = extratime + t;
                        pq.push({-dist[j], j});
                    }
                }
                extratime = 0;
                for (int j = curnode + doge; j < n; j += doge) {
                    extratime ++;
                    if (dist[j] > extratime + t) {
                        dist[j] = extratime + t;
                        pq.push({-dist[j], j});
                    }
                }
            }
            // small doge
            else {
                // ignore entirely
                if (mintime[curnode][doge] <= t)
                    continue;
                mintime[curnode][doge] = t;
                int extratime = 0;
                for (int j = curnode - doge; j >= 0; j -= doge) {
                    extratime ++;
                    // stop
                    if (mintime[j][doge] <= t + extratime)
                        break;
                    mintime[j][doge] = t + extratime;
                    if (dist[j] > extratime + t) {
                        dist[j] = extratime + t;
                        pq.push({-dist[j], j});
                    }
                }
                extratime = 0;
                for (int j = curnode + doge; j < n; j += doge) {
                    extratime ++;
                    // stop
                    if (mintime[j][doge] <= t + extratime)
                        break;
                    mintime[j][doge] = t + extratime;
                    if (dist[j] > extratime + t) {
                        dist[j] = extratime + t;
                        pq.push({-dist[j], j});
                    }
                }
            }
        }
        if (curnode == target) {
            break;
        }
    }
    if (dist[target] == INF) {
        cout << -1 << endl;
    } else cout << dist[target] << endl;
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2652 KB Output is correct
2 Correct 0 ms 2652 KB Output is correct
3 Correct 0 ms 2652 KB Output is correct
4 Correct 0 ms 2652 KB Output is correct
5 Correct 0 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 0 ms 2652 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2808 KB Output is correct
2 Correct 0 ms 2652 KB Output is correct
3 Correct 0 ms 2652 KB Output is correct
4 Correct 0 ms 2652 KB Output is correct
5 Correct 0 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 0 ms 2652 KB Output is correct
8 Correct 0 ms 2652 KB Output is correct
9 Correct 0 ms 2652 KB Output is correct
10 Correct 1 ms 2648 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2648 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2648 KB Output is correct
2 Correct 0 ms 2648 KB Output is correct
3 Correct 0 ms 2648 KB Output is correct
4 Correct 0 ms 2652 KB Output is correct
5 Correct 0 ms 2652 KB Output is correct
6 Correct 0 ms 2652 KB Output is correct
7 Correct 0 ms 2652 KB Output is correct
8 Correct 0 ms 2652 KB Output is correct
9 Correct 0 ms 2652 KB Output is correct
10 Correct 0 ms 2652 KB Output is correct
11 Correct 1 ms 2648 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2700 KB Output is correct
19 Correct 1 ms 2652 KB Output is correct
20 Correct 1 ms 2652 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 1 ms 2652 KB Output is correct
25 Correct 2 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2652 KB Output is correct
28 Correct 1 ms 2652 KB Output is correct
29 Correct 1 ms 2652 KB Output is correct
30 Correct 1 ms 2652 KB Output is correct
31 Correct 1 ms 2652 KB Output is correct
32 Correct 1 ms 2652 KB Output is correct
33 Correct 1 ms 2652 KB Output is correct
34 Correct 1 ms 2680 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2648 KB Output is correct
2 Correct 0 ms 2652 KB Output is correct
3 Correct 0 ms 2652 KB Output is correct
4 Correct 0 ms 2648 KB Output is correct
5 Correct 0 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 0 ms 2656 KB Output is correct
8 Correct 0 ms 2652 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 0 ms 2652 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2648 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 0 ms 2652 KB Output is correct
20 Correct 1 ms 2652 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 1 ms 2664 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2904 KB Output is correct
28 Correct 1 ms 2652 KB Output is correct
29 Correct 1 ms 2652 KB Output is correct
30 Correct 1 ms 2776 KB Output is correct
31 Correct 1 ms 2652 KB Output is correct
32 Correct 1 ms 2652 KB Output is correct
33 Correct 1 ms 2756 KB Output is correct
34 Correct 1 ms 2908 KB Output is correct
35 Correct 7 ms 2920 KB Output is correct
36 Correct 2 ms 2652 KB Output is correct
37 Correct 5 ms 2908 KB Output is correct
38 Correct 8 ms 3164 KB Output is correct
39 Correct 7 ms 3036 KB Output is correct
40 Correct 8 ms 3164 KB Output is correct
41 Correct 10 ms 3032 KB Output is correct
42 Correct 7 ms 2908 KB Output is correct
43 Correct 6 ms 2984 KB Output is correct
44 Correct 6 ms 2904 KB Output is correct
45 Correct 8 ms 3160 KB Output is correct
46 Correct 7 ms 3160 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 0 ms 2652 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 0 ms 2652 KB Output is correct
7 Correct 0 ms 2652 KB Output is correct
8 Correct 0 ms 2652 KB Output is correct
9 Correct 0 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2652 KB Output is correct
19 Correct 0 ms 2652 KB Output is correct
20 Correct 1 ms 2652 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 2 ms 2652 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2652 KB Output is correct
28 Correct 1 ms 2652 KB Output is correct
29 Correct 1 ms 2652 KB Output is correct
30 Correct 1 ms 2652 KB Output is correct
31 Correct 1 ms 2652 KB Output is correct
32 Correct 1 ms 2652 KB Output is correct
33 Correct 1 ms 2652 KB Output is correct
34 Correct 2 ms 2908 KB Output is correct
35 Correct 7 ms 3064 KB Output is correct
36 Correct 2 ms 2652 KB Output is correct
37 Correct 6 ms 2908 KB Output is correct
38 Correct 8 ms 3164 KB Output is correct
39 Correct 8 ms 3164 KB Output is correct
40 Correct 8 ms 3200 KB Output is correct
41 Correct 8 ms 3164 KB Output is correct
42 Correct 6 ms 2908 KB Output is correct
43 Correct 6 ms 3000 KB Output is correct
44 Correct 6 ms 2908 KB Output is correct
45 Correct 7 ms 3196 KB Output is correct
46 Correct 11 ms 3164 KB Output is correct
47 Correct 13 ms 7900 KB Output is correct
48 Correct 8 ms 11540 KB Output is correct
49 Correct 10 ms 13400 KB Output is correct
50 Correct 7 ms 13404 KB Output is correct
51 Correct 17 ms 15112 KB Output is correct
52 Correct 17 ms 14556 KB Output is correct
53 Correct 12 ms 14428 KB Output is correct
54 Correct 3 ms 13148 KB Output is correct
55 Correct 3 ms 13148 KB Output is correct
56 Correct 11 ms 14552 KB Output is correct
57 Correct 4 ms 14300 KB Output is correct
58 Correct 8 ms 13404 KB Output is correct
59 Correct 9 ms 13660 KB Output is correct
60 Correct 9 ms 13660 KB Output is correct
61 Correct 10 ms 13620 KB Output is correct
62 Correct 12 ms 14172 KB Output is correct
63 Correct 19 ms 14644 KB Output is correct
64 Correct 18 ms 14556 KB Output is correct
65 Correct 20 ms 14556 KB Output is correct
66 Correct 31 ms 15572 KB Output is correct
67 Correct 25 ms 15568 KB Output is correct