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Submission #1102767

# Submission time Handle Problem Language Result Execution time Memory
1102767 2024-10-18T19:43:44 Z ttamx Airplane (NOI23_airplane) C++17
100 / 100
 236 ms 24132 KB 
#include<bits/stdc++.h>
 
using namespace std;
 
using ll = long long;

const int N=2e5+5;
const int INF=INT_MAX/2;

int n,m;
int a[N];
vector<int> adj[N];
int dist1[N],dist2[N];
int ans=INF;

void dijkstra(int st,int *dist){
    priority_queue<pair<int,int>,vector<pair<int,int>>,greater<pair<int,int>>> pq;
    for(int i=1;i<=n;i++)dist[i]=INF;
    dist[st]=0;
    pq.emplace(0,st);
    while(!pq.empty()){
        auto [d,u]=pq.top();
        pq.pop();
        if(d>dist[u])continue;
        for(auto v:adj[u]){
            int nd=max(d+1,a[v]);
            if(nd<dist[v]){
                dist[v]=nd;
                pq.emplace(nd,v);
            }
        }
    }
}

int main(){
    cin.tie(nullptr)->sync_with_stdio(false);
    cin >> n >> m;
    for(int i=1;i<=n;i++)cin >> a[i];
    for(int i=0;i<m;i++){
        int u,v;
        cin >> u >> v;
        adj[u].emplace_back(v);
        adj[v].emplace_back(u);
    }
    dijkstra(1,dist1);
    dijkstra(n,dist2);
    for(int i=1;i<=n;i++){
        ans=min(ans,max(dist1[i],dist2[i])*2);
    }
    for(int u=1;u<=n;u++){
        for(auto v:adj[u]){
            ans=min(ans,max(dist1[u],dist2[v])*2+1);
        }
    }
    cout << ans;
}

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6480 KB Output is correct
2 Correct 48 ms 13564 KB Output is correct
3 Correct 51 ms 16712 KB Output is correct
4 Correct 55 ms 16612 KB Output is correct
5 Correct 56 ms 17176 KB Output is correct
6 Correct 55 ms 17224 KB Output is correct
7 Correct 55 ms 17344 KB Output is correct
8 Correct 2 ms 6648 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6648 KB Output is correct
2 Correct 2 ms 6480 KB Output is correct
3 Correct 1 ms 6480 KB Output is correct
4 Correct 1 ms 6480 KB Output is correct
5 Correct 1 ms 6480 KB Output is correct
6 Correct 2 ms 6480 KB Output is correct
7 Correct 2 ms 6480 KB Output is correct
8 Correct 2 ms 6480 KB Output is correct
9 Correct 2 ms 6480 KB Output is correct
10 Correct 2 ms 6480 KB Output is correct
11 Correct 2 ms 6480 KB Output is correct
12 Correct 2 ms 6480 KB Output is correct
13 Correct 3 ms 6492 KB Output is correct
14 Correct 2 ms 6736 KB Output is correct
15 Correct 3 ms 6744 KB Output is correct
16 Correct 3 ms 6736 KB Output is correct
17 Correct 3 ms 6736 KB Output is correct
18 Correct 1 ms 6480 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6648 KB Output is correct
2 Correct 2 ms 6480 KB Output is correct
3 Correct 1 ms 6480 KB Output is correct
4 Correct 1 ms 6480 KB Output is correct
5 Correct 1 ms 6480 KB Output is correct
6 Correct 2 ms 6480 KB Output is correct
7 Correct 2 ms 6480 KB Output is correct
8 Correct 2 ms 6480 KB Output is correct
9 Correct 2 ms 6480 KB Output is correct
10 Correct 2 ms 6480 KB Output is correct
11 Correct 2 ms 6480 KB Output is correct
12 Correct 2 ms 6480 KB Output is correct
13 Correct 3 ms 6492 KB Output is correct
14 Correct 2 ms 6736 KB Output is correct
15 Correct 3 ms 6744 KB Output is correct
16 Correct 3 ms 6736 KB Output is correct
17 Correct 3 ms 6736 KB Output is correct
18 Correct 1 ms 6480 KB Output is correct
19 Correct 3 ms 6736 KB Output is correct
20 Correct 2 ms 6480 KB Output is correct
21 Correct 2 ms 6736 KB Output is correct
22 Correct 2 ms 6736 KB Output is correct
23 Correct 3 ms 6632 KB Output is correct
24 Correct 3 ms 6480 KB Output is correct
25 Correct 2 ms 6736 KB Output is correct
26 Correct 3 ms 6736 KB Output is correct
27 Correct 3 ms 6736 KB Output is correct
28 Correct 3 ms 6736 KB Output is correct
29 Correct 3 ms 6592 KB Output is correct
30 Correct 3 ms 6736 KB Output is correct

Subtask #4
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6480 KB Output is correct
2 Correct 48 ms 13564 KB Output is correct
3 Correct 51 ms 16712 KB Output is correct
4 Correct 55 ms 16612 KB Output is correct
5 Correct 56 ms 17176 KB Output is correct
6 Correct 55 ms 17224 KB Output is correct
7 Correct 55 ms 17344 KB Output is correct
8 Correct 2 ms 6648 KB Output is correct
9 Correct 2 ms 6648 KB Output is correct
10 Correct 2 ms 6480 KB Output is correct
11 Correct 1 ms 6480 KB Output is correct
12 Correct 1 ms 6480 KB Output is correct
13 Correct 1 ms 6480 KB Output is correct
14 Correct 2 ms 6480 KB Output is correct
15 Correct 2 ms 6480 KB Output is correct
16 Correct 2 ms 6480 KB Output is correct
17 Correct 2 ms 6480 KB Output is correct
18 Correct 2 ms 6480 KB Output is correct
19 Correct 2 ms 6480 KB Output is correct
20 Correct 2 ms 6480 KB Output is correct
21 Correct 3 ms 6492 KB Output is correct
22 Correct 2 ms 6736 KB Output is correct
23 Correct 3 ms 6744 KB Output is correct
24 Correct 3 ms 6736 KB Output is correct
25 Correct 3 ms 6736 KB Output is correct
26 Correct 1 ms 6480 KB Output is correct
27 Correct 3 ms 6736 KB Output is correct
28 Correct 2 ms 6480 KB Output is correct
29 Correct 2 ms 6736 KB Output is correct
30 Correct 2 ms 6736 KB Output is correct
31 Correct 3 ms 6632 KB Output is correct
32 Correct 3 ms 6480 KB Output is correct
33 Correct 2 ms 6736 KB Output is correct
34 Correct 3 ms 6736 KB Output is correct
35 Correct 3 ms 6736 KB Output is correct
36 Correct 3 ms 6736 KB Output is correct
37 Correct 3 ms 6592 KB Output is correct
38 Correct 3 ms 6736 KB Output is correct
39 Correct 119 ms 17180 KB Output is correct
40 Correct 83 ms 16716 KB Output is correct
41 Correct 86 ms 16688 KB Output is correct
42 Correct 94 ms 16660 KB Output is correct
43 Correct 76 ms 16860 KB Output is correct
44 Correct 83 ms 16668 KB Output is correct
45 Correct 88 ms 16728 KB Output is correct
46 Correct 87 ms 16716 KB Output is correct
47 Correct 161 ms 16792 KB Output is correct
48 Correct 96 ms 16656 KB Output is correct
49 Correct 157 ms 17236 KB Output is correct
50 Correct 95 ms 17092 KB Output is correct
51 Correct 108 ms 16968 KB Output is correct
52 Correct 152 ms 19860 KB Output is correct
53 Correct 138 ms 18780 KB Output is correct
54 Correct 134 ms 19192 KB Output is correct
55 Correct 161 ms 19180 KB Output is correct
56 Correct 191 ms 22080 KB Output is correct
57 Correct 235 ms 21932 KB Output is correct
58 Correct 236 ms 22844 KB Output is correct
59 Correct 208 ms 22732 KB Output is correct
60 Correct 169 ms 24132 KB Output is correct
61 Correct 205 ms 22588 KB Output is correct
62 Correct 189 ms 22200 KB Output is correct
63 Correct 178 ms 22092 KB Output is correct
64 Correct 169 ms 22084 KB Output is correct
65 Correct 163 ms 22108 KB Output is correct
66 Correct 209 ms 22084 KB Output is correct
67 Correct 196 ms 22076 KB Output is correct