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Submission #914215

# Submission time Handle Problem Language Result Execution time Memory
914215 2024-01-21T11:19:47 Z esomer Airplane (NOI23_airplane) C++17
100 / 100
 475 ms 32340 KB 
#include<bits/stdc++.h>
 
using namespace std;

#define int long long

vector<int> Dijkstra(int start, vector<vector<int>>& adj, vector<int>& a){
    int n = (int)adj.size();
    vector<int> dist(n, 1e18);
    vector<bool> vis(n, false);
    dist[start] = 0;
    priority_queue<pair<int, int>> q; q.push({0, start});
    while(!q.empty()){
        int x = q.top().second; q.pop();
        if(vis[x]) continue;
        vis[x] = true;
        for(int& node : adj[x]){
            if(dist[node] > max(a[node], dist[x] + 1)){
                dist[node] = max(a[node], dist[x] + 1);
                q.push({-dist[node], node});
            }
        }
    }
    return dist;
}

void solve(){
    int n, m; cin >> n >> m;
    vector<int> a(n);
    for(auto &i : a) cin >> i;
    vector<vector<int>> adj(n);
    for(int i = 0; i < m; i++){
        int u, v; cin >> u >> v; u--; v--;
        adj[u].push_back(v);
        adj[v].push_back(u);
    }
    vector<int> dist1 = Dijkstra(0, adj, a);
    vector<int> distN = Dijkstra(n-1, adj, a);
    int ans = 1e18;
    for(int i = 0; i < n; i++){
        int cost = max(dist1[i], distN[i]) * 2;
        if(abs(dist1[i] - distN[i]) == 1) cost--;
        ans = min(ans, cost);
    }
    cout << ans << "\n";
}

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

    // int tt; cin >> tt;
    int tt = 1;
    while(tt--) solve();
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 60 ms 15956 KB Output is correct
3 Correct 60 ms 15952 KB Output is correct
4 Correct 63 ms 15952 KB Output is correct
5 Correct 64 ms 15956 KB Output is correct
6 Correct 63 ms 16092 KB Output is correct
7 Correct 64 ms 16112 KB Output is correct
8 Correct 1 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 2 ms 444 KB Output is correct
7 Correct 2 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 2 ms 600 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 4 ms 604 KB Output is correct
15 Correct 2 ms 800 KB Output is correct
16 Correct 2 ms 604 KB Output is correct
17 Correct 2 ms 604 KB Output is correct
18 Correct 0 ms 348 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 2 ms 444 KB Output is correct
7 Correct 2 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 2 ms 600 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 4 ms 604 KB Output is correct
15 Correct 2 ms 800 KB Output is correct
16 Correct 2 ms 604 KB Output is correct
17 Correct 2 ms 604 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 2 ms 604 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 1 ms 512 KB Output is correct
22 Correct 1 ms 508 KB Output is correct
23 Correct 1 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 1 ms 604 KB Output is correct
26 Correct 2 ms 600 KB Output is correct
27 Correct 2 ms 604 KB Output is correct
28 Correct 2 ms 604 KB Output is correct
29 Correct 2 ms 604 KB Output is correct
30 Correct 2 ms 596 KB Output is correct

Subtask #4
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 60 ms 15956 KB Output is correct
3 Correct 60 ms 15952 KB Output is correct
4 Correct 63 ms 15952 KB Output is correct
5 Correct 64 ms 15956 KB Output is correct
6 Correct 63 ms 16092 KB Output is correct
7 Correct 64 ms 16112 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 2 ms 444 KB Output is correct
15 Correct 2 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 2 ms 600 KB Output is correct
20 Correct 1 ms 604 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 4 ms 604 KB Output is correct
23 Correct 2 ms 800 KB Output is correct
24 Correct 2 ms 604 KB Output is correct
25 Correct 2 ms 604 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 2 ms 604 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 1 ms 512 KB Output is correct
30 Correct 1 ms 508 KB Output is correct
31 Correct 1 ms 604 KB Output is correct
32 Correct 1 ms 604 KB Output is correct
33 Correct 1 ms 604 KB Output is correct
34 Correct 2 ms 600 KB Output is correct
35 Correct 2 ms 604 KB Output is correct
36 Correct 2 ms 604 KB Output is correct
37 Correct 2 ms 604 KB Output is correct
38 Correct 2 ms 596 KB Output is correct
39 Correct 171 ms 21300 KB Output is correct
40 Correct 111 ms 20524 KB Output is correct
41 Correct 119 ms 20620 KB Output is correct
42 Correct 108 ms 20560 KB Output is correct
43 Correct 127 ms 20536 KB Output is correct
44 Correct 103 ms 20560 KB Output is correct
45 Correct 125 ms 20280 KB Output is correct
46 Correct 110 ms 20424 KB Output is correct
47 Correct 119 ms 20576 KB Output is correct
48 Correct 103 ms 20560 KB Output is correct
49 Correct 160 ms 21328 KB Output is correct
50 Correct 164 ms 21256 KB Output is correct
51 Correct 135 ms 21072 KB Output is correct
52 Correct 225 ms 27236 KB Output is correct
53 Correct 232 ms 26268 KB Output is correct
54 Correct 223 ms 26128 KB Output is correct
55 Correct 253 ms 26144 KB Output is correct
56 Correct 304 ms 31264 KB Output is correct
57 Correct 403 ms 31524 KB Output is correct
58 Correct 347 ms 32336 KB Output is correct
59 Correct 346 ms 32340 KB Output is correct
60 Correct 363 ms 32224 KB Output is correct
61 Correct 304 ms 32012 KB Output is correct
62 Correct 297 ms 31020 KB Output is correct
63 Correct 475 ms 31448 KB Output is correct
64 Correct 319 ms 31280 KB Output is correct
65 Correct 291 ms 31240 KB Output is correct
66 Correct 398 ms 31364 KB Output is correct
67 Correct 400 ms 31524 KB Output is correct