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Submission #199225

# Submission time Handle Problem Language Result Execution time Memory
199225 2020-01-30T11:22:48 Z Alexa2001 Jakarta Skyscrapers (APIO15_skyscraper) C++17
100 / 100
 226 ms 72292 KB 
#include <bits/stdc++.h>

using namespace std;

/// 12:08

const int Nmax = 30005;
const int base = 30007;
typedef pair<int,int> Pair;

vector<int> v[Nmax];
vector<Pair> edge[Nmax];

int salt[Nmax], pos[Nmax], dist[Nmax], last[Nmax];

int n, m;

int solve(int start, int finish)
{
    priority_queue< Pair, vector<Pair>, greater<Pair> > heap;
    heap.push({0, start});

    int i;
    for(i=0; i<n; ++i) dist[i] = 1e9;
    dist[start] = 0;

    while(heap.size())
    {
        int node, dst;
        tie(dst, node) = heap.top();
        heap.pop();
        if(dist[node] != dst) continue;

        if(node == finish) return dst;

        for(auto &it : edge[node])
            if(dist[node] + it.second < dist[it.first])
            {
                dist[it.first] = dist[node] + it.second;
                heap.push({dist[it.first], it.first});
            }
    }

    return -1;
}

int main()
{
  //  freopen("input", "r", stdin);
    cin.sync_with_stdio(false); cin.tie(0);

    cin >> n >> m;

    int i;
    for(i=0; i<m; ++i)
    {
        cin >> pos[i] >> salt[i];
        v[salt[i]].push_back(pos[i]);
    }

    for(i=0; i<n; ++i)
    {
        sort(v[i].begin(), v[i].end());
        v[i].erase( unique(v[i].begin(), v[i].end()) , v[i].end() );
    }

    for(i=1; i<=30000; ++i)
    {
        for(auto it : v[i]) last[it] = i;

        for(auto it : v[i])
        {
            int p, dst;
            for(p = it - i, dst = 1; p >= 0; p -= i, ++dst)
            {
                edge[it].push_back({p, dst});
                if(last[p] == i) break;
            }

            for(p = it + i, dst = 1; p<n; p += i, ++dst)
            {
                edge[it].push_back({p, dst});
                if(last[p] == i) break;
            }
        }
    }

    cout << solve(pos[0], pos[1]) << '\n';

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1788 KB Output is correct
2 Correct 6 ms 1784 KB Output is correct
3 Correct 6 ms 1656 KB Output is correct
4 Correct 6 ms 1784 KB Output is correct
5 Correct 6 ms 1784 KB Output is correct
6 Correct 6 ms 1784 KB Output is correct
7 Correct 6 ms 1784 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1784 KB Output is correct
2 Correct 6 ms 1784 KB Output is correct
3 Correct 5 ms 1784 KB Output is correct
4 Correct 6 ms 1784 KB Output is correct
5 Correct 6 ms 1784 KB Output is correct
6 Correct 6 ms 1784 KB Output is correct
7 Correct 6 ms 1784 KB Output is correct
8 Correct 6 ms 1784 KB Output is correct
9 Correct 5 ms 1784 KB Output is correct
10 Correct 6 ms 1784 KB Output is correct
11 Correct 6 ms 1912 KB Output is correct
12 Correct 6 ms 1784 KB Output is correct
13 Correct 6 ms 1784 KB Output is correct
14 Correct 6 ms 1784 KB Output is correct
15 Correct 6 ms 1784 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1784 KB Output is correct
2 Correct 6 ms 1784 KB Output is correct
3 Correct 6 ms 1784 KB Output is correct
4 Correct 6 ms 1784 KB Output is correct
5 Correct 6 ms 1784 KB Output is correct
6 Correct 6 ms 1784 KB Output is correct
7 Correct 6 ms 1784 KB Output is correct
8 Correct 6 ms 1784 KB Output is correct
9 Correct 6 ms 1784 KB Output is correct
10 Correct 6 ms 1784 KB Output is correct
11 Correct 6 ms 1784 KB Output is correct
12 Correct 6 ms 1784 KB Output is correct
13 Correct 6 ms 1784 KB Output is correct
14 Correct 6 ms 1784 KB Output is correct
15 Correct 6 ms 1784 KB Output is correct
16 Correct 6 ms 1784 KB Output is correct
17 Correct 7 ms 2040 KB Output is correct
18 Correct 7 ms 1912 KB Output is correct
19 Correct 6 ms 1784 KB Output is correct
20 Correct 6 ms 1784 KB Output is correct
21 Correct 7 ms 1784 KB Output is correct
22 Correct 6 ms 1784 KB Output is correct
23 Correct 7 ms 1912 KB Output is correct
24 Correct 7 ms 1912 KB Output is correct
25 Correct 7 ms 1912 KB Output is correct
26 Correct 6 ms 1912 KB Output is correct
27 Correct 7 ms 1912 KB Output is correct
28 Correct 7 ms 2040 KB Output is correct
29 Correct 9 ms 2552 KB Output is correct
30 Correct 7 ms 2040 KB Output is correct
31 Correct 8 ms 2168 KB Output is correct
32 Correct 7 ms 2040 KB Output is correct
33 Correct 11 ms 3320 KB Output is correct
34 Correct 10 ms 3324 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1780 KB Output is correct
2 Correct 6 ms 1784 KB Output is correct
3 Correct 6 ms 1912 KB Output is correct
4 Correct 6 ms 1784 KB Output is correct
5 Correct 6 ms 1784 KB Output is correct
6 Correct 6 ms 1784 KB Output is correct
7 Correct 6 ms 1784 KB Output is correct
8 Correct 6 ms 1784 KB Output is correct
9 Correct 6 ms 1784 KB Output is correct
10 Correct 6 ms 1784 KB Output is correct
11 Correct 6 ms 1784 KB Output is correct
12 Correct 6 ms 1788 KB Output is correct
13 Correct 6 ms 1784 KB Output is correct
14 Correct 6 ms 1912 KB Output is correct
15 Correct 7 ms 1912 KB Output is correct
16 Correct 6 ms 1784 KB Output is correct
17 Correct 7 ms 1912 KB Output is correct
18 Correct 6 ms 1912 KB Output is correct
19 Correct 6 ms 1784 KB Output is correct
20 Correct 7 ms 1912 KB Output is correct
21 Correct 6 ms 1784 KB Output is correct
22 Correct 6 ms 1784 KB Output is correct
23 Correct 6 ms 1912 KB Output is correct
24 Correct 7 ms 1912 KB Output is correct
25 Correct 7 ms 1912 KB Output is correct
26 Correct 7 ms 1912 KB Output is correct
27 Correct 7 ms 1888 KB Output is correct
28 Correct 7 ms 2040 KB Output is correct
29 Correct 9 ms 2680 KB Output is correct
30 Correct 7 ms 2040 KB Output is correct
31 Correct 8 ms 2300 KB Output is correct
32 Correct 7 ms 2040 KB Output is correct
33 Correct 12 ms 3320 KB Output is correct
34 Correct 11 ms 3352 KB Output is correct
35 Correct 15 ms 3192 KB Output is correct
36 Correct 8 ms 2040 KB Output is correct
37 Correct 16 ms 4216 KB Output is correct
38 Correct 18 ms 4088 KB Output is correct
39 Correct 17 ms 3964 KB Output is correct
40 Correct 18 ms 3960 KB Output is correct
41 Correct 17 ms 3960 KB Output is correct
42 Correct 13 ms 2296 KB Output is correct
43 Correct 12 ms 2296 KB Output is correct
44 Correct 12 ms 2296 KB Output is correct
45 Correct 25 ms 6776 KB Output is correct
46 Correct 22 ms 6904 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1784 KB Output is correct
2 Correct 5 ms 1784 KB Output is correct
3 Correct 5 ms 1784 KB Output is correct
4 Correct 6 ms 1784 KB Output is correct
5 Correct 6 ms 1784 KB Output is correct
6 Correct 6 ms 1784 KB Output is correct
7 Correct 6 ms 1784 KB Output is correct
8 Correct 6 ms 1784 KB Output is correct
9 Correct 6 ms 1784 KB Output is correct
10 Correct 6 ms 1784 KB Output is correct
11 Correct 6 ms 1784 KB Output is correct
12 Correct 6 ms 1784 KB Output is correct
13 Correct 6 ms 1784 KB Output is correct
14 Correct 6 ms 1784 KB Output is correct
15 Correct 6 ms 1784 KB Output is correct
16 Correct 6 ms 1784 KB Output is correct
17 Correct 7 ms 2040 KB Output is correct
18 Correct 6 ms 1912 KB Output is correct
19 Correct 6 ms 1784 KB Output is correct
20 Correct 7 ms 1784 KB Output is correct
21 Correct 6 ms 1784 KB Output is correct
22 Correct 6 ms 1784 KB Output is correct
23 Correct 6 ms 1912 KB Output is correct
24 Correct 7 ms 1912 KB Output is correct
25 Correct 7 ms 1912 KB Output is correct
26 Correct 7 ms 1912 KB Output is correct
27 Correct 6 ms 1912 KB Output is correct
28 Correct 7 ms 2040 KB Output is correct
29 Correct 9 ms 2552 KB Output is correct
30 Correct 7 ms 2168 KB Output is correct
31 Correct 8 ms 2168 KB Output is correct
32 Correct 7 ms 2044 KB Output is correct
33 Correct 11 ms 3320 KB Output is correct
34 Correct 11 ms 3352 KB Output is correct
35 Correct 15 ms 3192 KB Output is correct
36 Correct 7 ms 2040 KB Output is correct
37 Correct 15 ms 4216 KB Output is correct
38 Correct 18 ms 4088 KB Output is correct
39 Correct 17 ms 3960 KB Output is correct
40 Correct 18 ms 3960 KB Output is correct
41 Correct 18 ms 4216 KB Output is correct
42 Correct 11 ms 2296 KB Output is correct
43 Correct 11 ms 2300 KB Output is correct
44 Correct 11 ms 2300 KB Output is correct
45 Correct 24 ms 6776 KB Output is correct
46 Correct 22 ms 6904 KB Output is correct
47 Correct 35 ms 11384 KB Output is correct
48 Correct 21 ms 4980 KB Output is correct
49 Correct 18 ms 4088 KB Output is correct
50 Correct 15 ms 3960 KB Output is correct
51 Correct 34 ms 6712 KB Output is correct
52 Correct 35 ms 7220 KB Output is correct
53 Correct 18 ms 3572 KB Output is correct
54 Correct 8 ms 2296 KB Output is correct
55 Correct 9 ms 2804 KB Output is correct
56 Correct 18 ms 3192 KB Output is correct
57 Correct 22 ms 10744 KB Output is correct
58 Correct 14 ms 3308 KB Output is correct
59 Correct 17 ms 3572 KB Output is correct
60 Correct 17 ms 4340 KB Output is correct
61 Correct 17 ms 3700 KB Output is correct
62 Correct 28 ms 7412 KB Output is correct
63 Correct 79 ms 25852 KB Output is correct
64 Correct 91 ms 34404 KB Output is correct
65 Correct 123 ms 44524 KB Output is correct
66 Correct 226 ms 72292 KB Output is correct
67 Correct 183 ms 72292 KB Output is correct