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Submission #971167

# Submission time Handle Problem Language Result Execution time Memory
971167 2024-04-28T05:45:31 Z htphong0909 Robot (JOI21_ho_t4) C++17
34 / 100
 454 ms 133132 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;

vector<array<int, 4>> adj[100001];
vector<vector<array<int, 3>>> adj2[100001];
vector<int> sum[100001];
int DP[100001];
vector<int> DP2[100001];
int cnt[200001];
map<int, int> hm[100001];

int32_t main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    //freopen("TEST.IN", "r", stdin);
    //freopen("TEST.OUT", "w", stdout);
    int n, m;
    cin >> n >> m;
    for (int i = 0; i < m; i++)
    {
        int u, v, c, w;
        cin >> u >> v >> c >> w;
        if (!hm[u].count(c)) hm[u][c] = cnt[u]++;
        if (!hm[v].count(c)) hm[v][c] = cnt[v]++;
        adj[u].push_back({v, hm[u][c], w, hm[v][c]});
        adj[v].push_back({u, hm[v][c], w, hm[u][c]});
    }
    for (int i = 1; i <= n; i++)
    {
        DP2[i].assign(cnt[i], (int)1e18);
        adj2[i].resize(cnt[i]);
        sum[i].assign(cnt[i], 0);
        for (const auto& [v, c, w, vc] : adj[i])
        {
            adj2[i][c].push_back({v, w, vc});
            sum[i][c] += w;
        }
    }
    memset(DP, 0x3f, sizeof DP);
    DP[1] = 0;
    for (int i = 1; i < cnt[1]; i++) DP2[1][i] = 0;
    priority_queue<array<int, 3>, vector<array<int, 3>>, greater<>> q;
    q.push({DP[1], 1, -1});
    while (!q.empty())
    {
        auto [d, u, pc] = q.top();
        q.pop();
        if (DP[u] == d && pc == -1)
        {
            for (int i = 0; i < cnt[u]; i++)
            {
                int s = sum[u][i];
                for (const auto& [v, w, vc] : adj2[u][i])
                {
                    if (DP[v] > DP[u] + min(w, s - w))
                    {
                        DP[v] = DP[u] + min(w, s - w);
                        q.push({DP[v], v, -1});
                    }
                    if (DP2[v][vc] > DP[u])
                    {
                        DP2[v][vc] = DP[u];
                        q.push({DP2[v][vc], v, vc});
                    }
                }
            }
        }
        else if (DP2[u][pc] == d)
        {
            int s = sum[u][pc];
            for (const auto& [v, w, vc] : adj2[u][pc])
            {
                if (DP[v] > DP2[u][pc] + s - w)
                {
                    DP[v] = DP2[u][pc] + s - w;
                    q.push({DP[v], v, -1});
                }
            }
        }
    }
    if (DP[n] > (int)1e18) cout << -1;
    else cout << DP[n];
    return 0;
}

Subtask #1
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16732 KB Output is correct
2 Correct 4 ms 16732 KB Output is correct
3 Correct 4 ms 16732 KB Output is correct
4 Correct 4 ms 16732 KB Output is correct
5 Correct 4 ms 16732 KB Output is correct
6 Correct 4 ms 16732 KB Output is correct
7 Correct 4 ms 16988 KB Output is correct
8 Correct 5 ms 16984 KB Output is correct
9 Correct 6 ms 17504 KB Output is correct
10 Correct 6 ms 17500 KB Output is correct
11 Correct 5 ms 17244 KB Output is correct
12 Correct 5 ms 17244 KB Output is correct
13 Correct 6 ms 17244 KB Output is correct
14 Correct 6 ms 17244 KB Output is correct
15 Correct 5 ms 16988 KB Output is correct
16 Correct 5 ms 17244 KB Output is correct
17 Correct 5 ms 17244 KB Output is correct
18 Correct 4 ms 16988 KB Output is correct
19 Correct 7 ms 17244 KB Output is correct
20 Correct 8 ms 17268 KB Output is correct

Subtask #2
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 98 ms 38284 KB Output is correct
2 Correct 48 ms 26960 KB Output is correct
3 Correct 102 ms 43976 KB Output is correct
4 Correct 64 ms 31308 KB Output is correct
5 Correct 448 ms 80640 KB Output is correct
6 Correct 454 ms 78240 KB Output is correct
7 Correct 239 ms 73328 KB Output is correct
8 Correct 304 ms 67664 KB Output is correct
9 Runtime error 227 ms 133132 KB Execution killed with signal 11
10 Halted 0 ms 0 KB -

Subtask #3
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16732 KB Output is correct
2 Correct 4 ms 16732 KB Output is correct
3 Correct 4 ms 16732 KB Output is correct
4 Correct 4 ms 16732 KB Output is correct
5 Correct 4 ms 16732 KB Output is correct
6 Correct 4 ms 16732 KB Output is correct
7 Correct 4 ms 16988 KB Output is correct
8 Correct 5 ms 16984 KB Output is correct
9 Correct 6 ms 17504 KB Output is correct
10 Correct 6 ms 17500 KB Output is correct
11 Correct 5 ms 17244 KB Output is correct
12 Correct 5 ms 17244 KB Output is correct
13 Correct 6 ms 17244 KB Output is correct
14 Correct 6 ms 17244 KB Output is correct
15 Correct 5 ms 16988 KB Output is correct
16 Correct 5 ms 17244 KB Output is correct
17 Correct 5 ms 17244 KB Output is correct
18 Correct 4 ms 16988 KB Output is correct
19 Correct 7 ms 17244 KB Output is correct
20 Correct 8 ms 17268 KB Output is correct
21 Correct 98 ms 38284 KB Output is correct
22 Correct 48 ms 26960 KB Output is correct
23 Correct 102 ms 43976 KB Output is correct
24 Correct 64 ms 31308 KB Output is correct
25 Correct 448 ms 80640 KB Output is correct
26 Correct 454 ms 78240 KB Output is correct
27 Correct 239 ms 73328 KB Output is correct
28 Correct 304 ms 67664 KB Output is correct
29 Runtime error 227 ms 133132 KB Execution killed with signal 11
30 Halted 0 ms 0 KB -