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Submission #766363

# Submission time Handle Problem Language Result Execution time Memory
766363 2023-06-25T14:48:09 Z linkret Jakarta Skyscrapers (APIO15_skyscraper) C++14
100 / 100
 650 ms 26664 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N = 3e4 + 30, B = 200;
const int inf = 2e9;

int n, m;
int dist[N][B];
bool bio[N];
vector<int> adj[N];

struct rec {
    int d, v, p;

    friend bool operator<(const rec& a, const rec& b) {
        if (a.d != b.d)
            return a.d < b.d;
        if (a.v != b.v)
            return a.v < b.v;
        return a.p < b.p;
    }
};

/*
5 3
0 2
1 1
4 1
*/

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    for(int i = 0; i < N; i++) {
        for(int j = 0; j < B; j++) {
            dist[i][j] = inf;
        }
    }

    cin >> n >> m;

    int s = 0, f = 0;
    for(int i = 0; i < m; i++) {
        int x, k;
        cin >> x >> k;
        adj[x].push_back(k);

        if(i == 0) s = x;
        if(i == 1) f = x;
    }

//    priority_queue<array<int,3>> q;
    priority_queue<rec> q;

    for(auto x : adj[s]) {
        if(x < B) {
            dist[s][x] = 0;
            q.push({dist[s][x], s, x});
        } else {
            for(int k = 1; s + k * x < N; k++) {
                dist[s + k * x][0] = k;
                q.push({-dist[s + k * x][0], s + k * x, 0});
            }

            for(int k = 1; s - k * x >= 0; k++) {
                dist[s - k * x][0] = k;
                q.push({-dist[s - k * x][0], s - k * x, 0});
            }
        }
    }
    bio[s] = 1;

    while(!q.empty()) {
        auto top = q.top();
        int d = top.d;
        int v = top.v;
        int p = top.p;
        q.pop();
        d = -d;

        if(d > dist[v][p]) continue;

        if(!bio[v]) {
              for(auto x : adj[v]) {
                    if(x < B) {
                          dist[v][x] = d;
                          q.push({-dist[v][x], v, x});
                    } else {
                          for(int k = 1; v + k * x < n; k++) {
                                if(dist[v + k * x][0] > d + k) {
                                      dist[v + k * x][0] = d + k;
                                      q.push({-dist[v + k * x][0], v + k * x, 0});
                                }
                          }

                          for(int k = 1; v - k * x >= 0; k++) {
                                if(dist[v - k * x][0] > d + k) {
                                      dist[v - k * x][0] = d + k;
                                      q.push({-dist[v - k * x][0], v - k * x, 0});
                                }
                          }
                    }
              }
              bio[v] = 1;
        }

        if(v + p < N && dist[v + p][p] > d + 1) {
              dist[v + p][p] = d + 1;
              q.push({-dist[v + p][p], v + p, p});
        }

        if(v - p >= 0 && dist[v - p][p] > d + 1) {
              dist[v - p][p] = d + 1;
              q.push({-dist[v - p][p], v - p, p});
        }
    }

    int ans = inf;
    for(int k = 0; k < B; k++)
        ans = min(ans, dist[f][k]);

    if(ans == inf)
        ans = -1;

    cout << ans << '\n';

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 24532 KB Output is correct
2 Correct 11 ms 24532 KB Output is correct
3 Correct 11 ms 24460 KB Output is correct
4 Correct 10 ms 24532 KB Output is correct
5 Correct 13 ms 24520 KB Output is correct
6 Correct 14 ms 24512 KB Output is correct
7 Correct 12 ms 24464 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 24496 KB Output is correct
2 Correct 14 ms 24532 KB Output is correct
3 Correct 11 ms 24532 KB Output is correct
4 Correct 13 ms 24528 KB Output is correct
5 Correct 13 ms 24532 KB Output is correct
6 Correct 18 ms 24560 KB Output is correct
7 Correct 12 ms 24532 KB Output is correct
8 Correct 14 ms 24520 KB Output is correct
9 Correct 20 ms 24536 KB Output is correct
10 Correct 50 ms 24496 KB Output is correct
11 Correct 115 ms 24640 KB Output is correct
12 Correct 28 ms 24532 KB Output is correct
13 Correct 15 ms 24504 KB Output is correct
14 Correct 139 ms 24604 KB Output is correct
15 Correct 139 ms 24532 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 24456 KB Output is correct
2 Correct 11 ms 24556 KB Output is correct
3 Correct 11 ms 24532 KB Output is correct
4 Correct 11 ms 24532 KB Output is correct
5 Correct 13 ms 24484 KB Output is correct
6 Correct 13 ms 24532 KB Output is correct
7 Correct 13 ms 24544 KB Output is correct
8 Correct 15 ms 24508 KB Output is correct
9 Correct 20 ms 24564 KB Output is correct
10 Correct 57 ms 24572 KB Output is correct
11 Correct 115 ms 24648 KB Output is correct
12 Correct 19 ms 24500 KB Output is correct
13 Correct 12 ms 24580 KB Output is correct
14 Correct 131 ms 24604 KB Output is correct
15 Correct 134 ms 24532 KB Output is correct
16 Correct 11 ms 24444 KB Output is correct
17 Correct 64 ms 24612 KB Output is correct
18 Correct 14 ms 24464 KB Output is correct
19 Correct 13 ms 24532 KB Output is correct
20 Correct 14 ms 24624 KB Output is correct
21 Correct 11 ms 24532 KB Output is correct
22 Correct 11 ms 24532 KB Output is correct
23 Correct 19 ms 24532 KB Output is correct
24 Correct 26 ms 24544 KB Output is correct
25 Correct 15 ms 24500 KB Output is correct
26 Correct 21 ms 24544 KB Output is correct
27 Correct 18 ms 24572 KB Output is correct
28 Correct 39 ms 24528 KB Output is correct
29 Correct 78 ms 24700 KB Output is correct
30 Correct 26 ms 24540 KB Output is correct
31 Correct 44 ms 24520 KB Output is correct
32 Correct 34 ms 24576 KB Output is correct
33 Correct 132 ms 24604 KB Output is correct
34 Correct 143 ms 24600 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 24556 KB Output is correct
2 Correct 12 ms 24532 KB Output is correct
3 Correct 11 ms 24532 KB Output is correct
4 Correct 10 ms 24448 KB Output is correct
5 Correct 12 ms 24532 KB Output is correct
6 Correct 13 ms 24532 KB Output is correct
7 Correct 11 ms 24532 KB Output is correct
8 Correct 14 ms 24560 KB Output is correct
9 Correct 20 ms 24560 KB Output is correct
10 Correct 53 ms 24532 KB Output is correct
11 Correct 120 ms 24644 KB Output is correct
12 Correct 18 ms 24624 KB Output is correct
13 Correct 12 ms 24612 KB Output is correct
14 Correct 134 ms 24604 KB Output is correct
15 Correct 133 ms 24524 KB Output is correct
16 Correct 11 ms 24468 KB Output is correct
17 Correct 63 ms 24612 KB Output is correct
18 Correct 11 ms 24488 KB Output is correct
19 Correct 12 ms 24540 KB Output is correct
20 Correct 12 ms 24532 KB Output is correct
21 Correct 12 ms 24536 KB Output is correct
22 Correct 11 ms 24532 KB Output is correct
23 Correct 20 ms 24592 KB Output is correct
24 Correct 28 ms 24548 KB Output is correct
25 Correct 15 ms 24592 KB Output is correct
26 Correct 21 ms 24508 KB Output is correct
27 Correct 18 ms 24532 KB Output is correct
28 Correct 40 ms 24556 KB Output is correct
29 Correct 70 ms 24576 KB Output is correct
30 Correct 28 ms 24468 KB Output is correct
31 Correct 52 ms 24560 KB Output is correct
32 Correct 36 ms 24560 KB Output is correct
33 Correct 144 ms 24596 KB Output is correct
34 Correct 135 ms 24596 KB Output is correct
35 Correct 144 ms 25008 KB Output is correct
36 Correct 43 ms 24544 KB Output is correct
37 Correct 171 ms 24980 KB Output is correct
38 Correct 144 ms 24892 KB Output is correct
39 Correct 151 ms 24876 KB Output is correct
40 Correct 145 ms 24952 KB Output is correct
41 Correct 144 ms 24916 KB Output is correct
42 Correct 25 ms 25232 KB Output is correct
43 Correct 22 ms 25276 KB Output is correct
44 Correct 19 ms 25276 KB Output is correct
45 Correct 584 ms 25340 KB Output is correct
46 Correct 591 ms 25196 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 24516 KB Output is correct
2 Correct 11 ms 24532 KB Output is correct
3 Correct 11 ms 24540 KB Output is correct
4 Correct 11 ms 24488 KB Output is correct
5 Correct 12 ms 24532 KB Output is correct
6 Correct 16 ms 24468 KB Output is correct
7 Correct 12 ms 24532 KB Output is correct
8 Correct 15 ms 24564 KB Output is correct
9 Correct 19 ms 24532 KB Output is correct
10 Correct 49 ms 24560 KB Output is correct
11 Correct 114 ms 24640 KB Output is correct
12 Correct 20 ms 24624 KB Output is correct
13 Correct 12 ms 24532 KB Output is correct
14 Correct 135 ms 24608 KB Output is correct
15 Correct 139 ms 24608 KB Output is correct
16 Correct 11 ms 24532 KB Output is correct
17 Correct 65 ms 24604 KB Output is correct
18 Correct 11 ms 24580 KB Output is correct
19 Correct 11 ms 24528 KB Output is correct
20 Correct 12 ms 24532 KB Output is correct
21 Correct 11 ms 24572 KB Output is correct
22 Correct 12 ms 24576 KB Output is correct
23 Correct 21 ms 24592 KB Output is correct
24 Correct 25 ms 24564 KB Output is correct
25 Correct 14 ms 24532 KB Output is correct
26 Correct 20 ms 24532 KB Output is correct
27 Correct 17 ms 24628 KB Output is correct
28 Correct 33 ms 24532 KB Output is correct
29 Correct 71 ms 24572 KB Output is correct
30 Correct 28 ms 24532 KB Output is correct
31 Correct 46 ms 24584 KB Output is correct
32 Correct 34 ms 24560 KB Output is correct
33 Correct 140 ms 24752 KB Output is correct
34 Correct 132 ms 24604 KB Output is correct
35 Correct 145 ms 24860 KB Output is correct
36 Correct 48 ms 24532 KB Output is correct
37 Correct 175 ms 24984 KB Output is correct
38 Correct 143 ms 24976 KB Output is correct
39 Correct 144 ms 24948 KB Output is correct
40 Correct 150 ms 24872 KB Output is correct
41 Correct 143 ms 24872 KB Output is correct
42 Correct 26 ms 25300 KB Output is correct
43 Correct 21 ms 25264 KB Output is correct
44 Correct 16 ms 25284 KB Output is correct
45 Correct 588 ms 25264 KB Output is correct
46 Correct 582 ms 25236 KB Output is correct
47 Correct 138 ms 25492 KB Output is correct
48 Correct 15 ms 25172 KB Output is correct
49 Correct 15 ms 25128 KB Output is correct
50 Correct 14 ms 25044 KB Output is correct
51 Correct 42 ms 25968 KB Output is correct
52 Correct 44 ms 26024 KB Output is correct
53 Correct 20 ms 25428 KB Output is correct
54 Correct 12 ms 24504 KB Output is correct
55 Correct 12 ms 24548 KB Output is correct
56 Correct 17 ms 25700 KB Output is correct
57 Correct 53 ms 24660 KB Output is correct
58 Correct 18 ms 25428 KB Output is correct
59 Correct 20 ms 25480 KB Output is correct
60 Correct 25 ms 25476 KB Output is correct
61 Correct 25 ms 25512 KB Output is correct
62 Correct 39 ms 25768 KB Output is correct
63 Correct 38 ms 25816 KB Output is correct
64 Correct 44 ms 25840 KB Output is correct
65 Correct 211 ms 26664 KB Output is correct
66 Correct 650 ms 26532 KB Output is correct
67 Correct 640 ms 26576 KB Output is correct