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Submission #956199

# Submission time Handle Problem Language Result Execution time Memory
956199 2024-04-01T09:54:42 Z Nelt Jakarta Skyscrapers (APIO15_skyscraper) C++17
22 / 100
 1000 ms 173600 KB 
#include <bits/stdc++.h>
#define ll long long
#define endl "\n"
using namespace std;
 
void solve()
{
    ll n, m;
    cin >> n >> m;
    ll b[m], p[m];
    vector<ll> eq[n];
    for (ll i = 0; i < m; i++)
        cin >> b[i] >> p[i], eq[b[i]].push_back(i);
    map<ll, ll> dist[m];
    dist[0][b[0]] = 0;
    deque<pair<ll, ll>> q;
    q.push_front(make_pair(0, b[0]));
    while (!q.empty())
    {
        auto [i, j] = q.front();
        q.pop_front();
        if (i == 1)
        {
            cout << dist[1][j] << endl;
            return;
        }
        if (j - p[i] >= 0 and (!dist[i].count(j - p[i]) or dist[i][j - p[i]] > dist[i][j] + 1))
            dist[i][j - p[i]] = dist[i][j] + 1, q.push_back(make_pair(i, j - p[i]));
        if (j + p[i] < n and (!dist[i].count(j + p[i]) or dist[i][j + p[i]] > dist[i][j] + 1))
            dist[i][j + p[i]] = dist[i][j] + 1, q.push_back(make_pair(i, j + p[i]));
        for (ll k : eq[j])
            if (!dist[k].count(j) or dist[k][j] > dist[i][j])
                dist[k][j] = dist[i][j], q.push_front(make_pair(k, j));
        eq[j].clear();
    }
    ll best = 1e18;
    for (auto i : dist[1])
        best = min(best, i.second);
    if (best == 1e18)
        best = -1;
    cout << best << endl;
}
 
signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll t = 1;
    // precomp();
    // cin >> t;
    for (ll i = 1; i <= t; i++)
        solve();
    cerr << "\nTime elapsed: " << clock() * 1000.0 / CLOCKS_PER_SEC << " ms\n";
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 860 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 1 ms 860 KB Output is correct
15 Correct 1 ms 860 KB Output is correct

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 856 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 1 ms 860 KB Output is correct
15 Correct 1 ms 860 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 860 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Execution timed out 1046 ms 167192 KB Time limit exceeded
21 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 1 ms 860 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 1 ms 856 KB Output is correct
15 Correct 1 ms 856 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 856 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Execution timed out 1094 ms 173600 KB Time limit exceeded
21 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 856 KB Output is correct
12 Correct 1 ms 860 KB Output is correct
13 Correct 2 ms 1372 KB Output is correct
14 Correct 1 ms 860 KB Output is correct
15 Correct 1 ms 860 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 860 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 548 KB Output is correct
20 Execution timed out 1088 ms 170716 KB Time limit exceeded
21 Halted 0 ms 0 KB -