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Submission #636883

# Submission time Handle Problem Language Result Execution time Memory
636883 2022-08-30T11:12:17 Z classic Jakarta Skyscrapers (APIO15_skyscraper) C++14
100 / 100
 818 ms 29504 KB 
#include <bits/stdc++.h>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    vector<int> b(m), p(m);
    vector<vector<int>> doge(n + 1);
    for (int i = 0; i < m; i++) {
        cin >> b[i] >> p[i];
        doge[b[i]].emplace_back(i);
    }
    priority_queue<pair<int, pair<int, int>>, vector<pair<int, pair<int, int>>>, greater<pair<int, pair<int, int>>>> pq;
    pq.push({0, {b[0], 0}});
    vector<vector<int>> dist(n, vector<int>(200, 1e9));
    dist[b[0]][0] = 0;
    int limit = (int)sqrt(n);
    int res = 1e9;
    while (!pq.empty()) {
        pair<int, pair<int, int>> cur = pq.top();
        pq.pop();
        int du = cur.first;
        int u = cur.second.first;
        if (u == b[1]) {
            res = min(res, du);
        }
        int pu = cur.second.second;
        if (pu == 0) {
            for (int id : doge[u]) {
                if (p[id] <= limit) { // nsqrt(n)
                    if (dist[u][p[id]] > du) {
                        dist[u][p[id]] = du;
                        pq.push({du, {u, p[id]}});
                    }
                } else { // msqrt(n)
                    int pv = p[id];
                    for (int j = 1; u - j * pv >= 0; j++) {
                        int v = u - j * pv;
                        int dv = du + j;
                        if (dist[v][0] > dv) {
                            dist[v][0] = dv;
                            pq.push({dv, {v, 0}});
                        }
                    }
                    for (int j = 1; u + j * pv < n; j++) {
                        int v = u + j * pv;
                        int dv = du + j;
                        if (dist[v][0] > dv) {
                            dist[v][0] = dv;
                            pq.push({dv, {v, 0}});
                        }
                    }
                }
            }
        } else {
            if (dist[u][0] > du) { // nsqrt(n)
                dist[u][0] = du;
                pq.push({dist[u][0], {u, 0}});
            }
            // 2nsqrt(n)
            if (u + pu < n && dist[u + pu][pu] > dist[u][pu] + 1) {
                int dv = dist[u][pu] + 1;
                int v = u + pu;
                dist[v][pu] = dist[u][pu] + 1;
                pq.push({dv, {v, pu}});
            }
            if (u - pu >= 0 && dist[u - pu][pu] > dist[u][pu] + 1) {
                int dv = dist[u][pu] + 1;
                int v = u - pu;
                dist[v][pu] = dist[u][pu] + 1;
                pq.push({dv, {v, pu}});
            }
        }
    }
    cout << (res == 1e9 ? -1 : res);
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 320 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 316 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 2 ms 452 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 320 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 2 ms 980 KB Output is correct
18 Correct 1 ms 1748 KB Output is correct
19 Correct 1 ms 1992 KB Output is correct
20 Correct 2 ms 2004 KB Output is correct
21 Correct 1 ms 584 KB Output is correct
22 Correct 1 ms 1760 KB Output is correct
23 Correct 2 ms 1632 KB Output is correct
24 Correct 2 ms 1992 KB Output is correct
25 Correct 2 ms 2004 KB Output is correct
26 Correct 2 ms 2004 KB Output is correct
27 Correct 1 ms 2004 KB Output is correct
28 Correct 2 ms 2000 KB Output is correct
29 Correct 7 ms 2052 KB Output is correct
30 Correct 3 ms 2004 KB Output is correct
31 Correct 6 ms 2004 KB Output is correct
32 Correct 3 ms 1988 KB Output is correct
33 Correct 11 ms 2124 KB Output is correct
34 Correct 12 ms 2128 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 224 KB Output is correct
2 Correct 1 ms 224 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 224 KB Output is correct
5 Correct 0 ms 224 KB Output is correct
6 Correct 1 ms 224 KB Output is correct
7 Correct 0 ms 220 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 448 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 2 ms 980 KB Output is correct
18 Correct 1 ms 1748 KB Output is correct
19 Correct 1 ms 1992 KB Output is correct
20 Correct 2 ms 2004 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 1748 KB Output is correct
23 Correct 2 ms 1620 KB Output is correct
24 Correct 3 ms 1992 KB Output is correct
25 Correct 3 ms 1992 KB Output is correct
26 Correct 2 ms 1992 KB Output is correct
27 Correct 2 ms 2008 KB Output is correct
28 Correct 2 ms 2008 KB Output is correct
29 Correct 8 ms 1996 KB Output is correct
30 Correct 3 ms 2012 KB Output is correct
31 Correct 6 ms 2068 KB Output is correct
32 Correct 3 ms 2112 KB Output is correct
33 Correct 11 ms 2192 KB Output is correct
34 Correct 11 ms 2136 KB Output is correct
35 Correct 10 ms 2264 KB Output is correct
36 Correct 4 ms 1264 KB Output is correct
37 Correct 18 ms 2516 KB Output is correct
38 Correct 14 ms 2848 KB Output is correct
39 Correct 15 ms 2892 KB Output is correct
40 Correct 15 ms 2772 KB Output is correct
41 Correct 15 ms 2896 KB Output is correct
42 Correct 5 ms 2516 KB Output is correct
43 Correct 5 ms 2504 KB Output is correct
44 Correct 5 ms 2516 KB Output is correct
45 Correct 15 ms 2780 KB Output is correct
46 Correct 15 ms 2772 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 316 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 216 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 0 ms 320 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 352 KB Output is correct
11 Correct 1 ms 480 KB Output is correct
12 Correct 1 ms 352 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 472 KB Output is correct
17 Correct 2 ms 980 KB Output is correct
18 Correct 1 ms 1748 KB Output is correct
19 Correct 2 ms 2004 KB Output is correct
20 Correct 2 ms 2008 KB Output is correct
21 Correct 1 ms 628 KB Output is correct
22 Correct 1 ms 1748 KB Output is correct
23 Correct 2 ms 1620 KB Output is correct
24 Correct 2 ms 2004 KB Output is correct
25 Correct 2 ms 2092 KB Output is correct
26 Correct 2 ms 2004 KB Output is correct
27 Correct 2 ms 2004 KB Output is correct
28 Correct 2 ms 1988 KB Output is correct
29 Correct 8 ms 1988 KB Output is correct
30 Correct 4 ms 2004 KB Output is correct
31 Correct 6 ms 2004 KB Output is correct
32 Correct 3 ms 2004 KB Output is correct
33 Correct 13 ms 2180 KB Output is correct
34 Correct 12 ms 2184 KB Output is correct
35 Correct 10 ms 2260 KB Output is correct
36 Correct 3 ms 1364 KB Output is correct
37 Correct 13 ms 2540 KB Output is correct
38 Correct 14 ms 2780 KB Output is correct
39 Correct 14 ms 2772 KB Output is correct
40 Correct 14 ms 2852 KB Output is correct
41 Correct 15 ms 2772 KB Output is correct
42 Correct 5 ms 2516 KB Output is correct
43 Correct 8 ms 2516 KB Output is correct
44 Correct 5 ms 2516 KB Output is correct
45 Correct 15 ms 2772 KB Output is correct
46 Correct 16 ms 2772 KB Output is correct
47 Correct 84 ms 12028 KB Output is correct
48 Correct 14 ms 20820 KB Output is correct
49 Correct 15 ms 22604 KB Output is correct
50 Correct 14 ms 24472 KB Output is correct
51 Correct 55 ms 27288 KB Output is correct
52 Correct 64 ms 27304 KB Output is correct
53 Correct 25 ms 26776 KB Output is correct
54 Correct 13 ms 25684 KB Output is correct
55 Correct 17 ms 25604 KB Output is correct
56 Correct 26 ms 27068 KB Output is correct
57 Correct 83 ms 25824 KB Output is correct
58 Correct 19 ms 26068 KB Output is correct
59 Correct 21 ms 26196 KB Output is correct
60 Correct 25 ms 26188 KB Output is correct
61 Correct 23 ms 26292 KB Output is correct
62 Correct 44 ms 27092 KB Output is correct
63 Correct 59 ms 27980 KB Output is correct
64 Correct 65 ms 27972 KB Output is correct
65 Correct 279 ms 27940 KB Output is correct
66 Correct 811 ms 29504 KB Output is correct
67 Correct 818 ms 29436 KB Output is correct