#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();
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
63 ms |
15956 KB |
Output is correct |
| 3 |
Correct |
71 ms |
15932 KB |
Output is correct |
| 4 |
Correct |
60 ms |
15956 KB |
Output is correct |
| 5 |
Correct |
97 ms |
16104 KB |
Output is correct |
| 6 |
Correct |
65 ms |
15956 KB |
Output is correct |
| 7 |
Correct |
85 ms |
15952 KB |
Output is correct |
| 8 |
Correct |
0 ms |
416 KB |
Output is correct |
| # |
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 |
1 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
604 KB |
Output is correct |
| 7 |
Correct |
1 ms |
604 KB |
Output is correct |
| 8 |
Correct |
1 ms |
604 KB |
Output is correct |
| 9 |
Correct |
1 ms |
424 KB |
Output is correct |
| 10 |
Correct |
1 ms |
600 KB |
Output is correct |
| 11 |
Correct |
2 ms |
604 KB |
Output is correct |
| 12 |
Correct |
1 ms |
604 KB |
Output is correct |
| 13 |
Correct |
1 ms |
600 KB |
Output is correct |
| 14 |
Correct |
2 ms |
604 KB |
Output is correct |
| 15 |
Correct |
2 ms |
604 KB |
Output is correct |
| 16 |
Correct |
2 ms |
720 KB |
Output is correct |
| 17 |
Correct |
3 ms |
604 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| # |
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 |
1 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
604 KB |
Output is correct |
| 7 |
Correct |
1 ms |
604 KB |
Output is correct |
| 8 |
Correct |
1 ms |
604 KB |
Output is correct |
| 9 |
Correct |
1 ms |
424 KB |
Output is correct |
| 10 |
Correct |
1 ms |
600 KB |
Output is correct |
| 11 |
Correct |
2 ms |
604 KB |
Output is correct |
| 12 |
Correct |
1 ms |
604 KB |
Output is correct |
| 13 |
Correct |
1 ms |
600 KB |
Output is correct |
| 14 |
Correct |
2 ms |
604 KB |
Output is correct |
| 15 |
Correct |
2 ms |
604 KB |
Output is correct |
| 16 |
Correct |
2 ms |
720 KB |
Output is correct |
| 17 |
Correct |
3 ms |
604 KB |
Output is correct |
| 18 |
Correct |
1 ms |
348 KB |
Output is correct |
| 19 |
Correct |
1 ms |
604 KB |
Output is correct |
| 20 |
Correct |
2 ms |
600 KB |
Output is correct |
| 21 |
Correct |
1 ms |
604 KB |
Output is correct |
| 22 |
Correct |
2 ms |
604 KB |
Output is correct |
| 23 |
Correct |
1 ms |
604 KB |
Output is correct |
| 24 |
Correct |
1 ms |
604 KB |
Output is correct |
| 25 |
Correct |
2 ms |
600 KB |
Output is correct |
| 26 |
Correct |
2 ms |
604 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 |
3 ms |
604 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
63 ms |
15956 KB |
Output is correct |
| 3 |
Correct |
71 ms |
15932 KB |
Output is correct |
| 4 |
Correct |
60 ms |
15956 KB |
Output is correct |
| 5 |
Correct |
97 ms |
16104 KB |
Output is correct |
| 6 |
Correct |
65 ms |
15956 KB |
Output is correct |
| 7 |
Correct |
85 ms |
15952 KB |
Output is correct |
| 8 |
Correct |
0 ms |
416 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 |
344 KB |
Output is correct |
| 12 |
Correct |
1 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Correct |
1 ms |
604 KB |
Output is correct |
| 15 |
Correct |
1 ms |
604 KB |
Output is correct |
| 16 |
Correct |
1 ms |
604 KB |
Output is correct |
| 17 |
Correct |
1 ms |
424 KB |
Output is correct |
| 18 |
Correct |
1 ms |
600 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 |
600 KB |
Output is correct |
| 22 |
Correct |
2 ms |
604 KB |
Output is correct |
| 23 |
Correct |
2 ms |
604 KB |
Output is correct |
| 24 |
Correct |
2 ms |
720 KB |
Output is correct |
| 25 |
Correct |
3 ms |
604 KB |
Output is correct |
| 26 |
Correct |
1 ms |
348 KB |
Output is correct |
| 27 |
Correct |
1 ms |
604 KB |
Output is correct |
| 28 |
Correct |
2 ms |
600 KB |
Output is correct |
| 29 |
Correct |
1 ms |
604 KB |
Output is correct |
| 30 |
Correct |
2 ms |
604 KB |
Output is correct |
| 31 |
Correct |
1 ms |
604 KB |
Output is correct |
| 32 |
Correct |
1 ms |
604 KB |
Output is correct |
| 33 |
Correct |
2 ms |
600 KB |
Output is correct |
| 34 |
Correct |
2 ms |
604 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 |
3 ms |
604 KB |
Output is correct |
| 39 |
Correct |
151 ms |
17176 KB |
Output is correct |
| 40 |
Correct |
107 ms |
16980 KB |
Output is correct |
| 41 |
Correct |
101 ms |
17144 KB |
Output is correct |
| 42 |
Correct |
122 ms |
17280 KB |
Output is correct |
| 43 |
Correct |
153 ms |
16976 KB |
Output is correct |
| 44 |
Correct |
118 ms |
16976 KB |
Output is correct |
| 45 |
Correct |
145 ms |
17264 KB |
Output is correct |
| 46 |
Correct |
168 ms |
17032 KB |
Output is correct |
| 47 |
Correct |
112 ms |
17188 KB |
Output is correct |
| 48 |
Correct |
115 ms |
17112 KB |
Output is correct |
| 49 |
Correct |
187 ms |
17468 KB |
Output is correct |
| 50 |
Correct |
191 ms |
16980 KB |
Output is correct |
| 51 |
Correct |
148 ms |
16976 KB |
Output is correct |
| 52 |
Correct |
326 ms |
21796 KB |
Output is correct |
| 53 |
Correct |
200 ms |
21612 KB |
Output is correct |
| 54 |
Correct |
209 ms |
21632 KB |
Output is correct |
| 55 |
Correct |
294 ms |
21948 KB |
Output is correct |
| 56 |
Correct |
329 ms |
25608 KB |
Output is correct |
| 57 |
Correct |
309 ms |
25904 KB |
Output is correct |
| 58 |
Correct |
296 ms |
25540 KB |
Output is correct |
| 59 |
Correct |
349 ms |
25500 KB |
Output is correct |
| 60 |
Correct |
294 ms |
25716 KB |
Output is correct |
| 61 |
Correct |
311 ms |
26560 KB |
Output is correct |
| 62 |
Correct |
317 ms |
25744 KB |
Output is correct |
| 63 |
Correct |
275 ms |
25568 KB |
Output is correct |
| 64 |
Correct |
295 ms |
25552 KB |
Output is correct |
| 65 |
Correct |
332 ms |
25552 KB |
Output is correct |
| 66 |
Correct |
338 ms |
25552 KB |
Output is correct |
| 67 |
Correct |
377 ms |
25728 KB |
Output is correct |
