#include<bits/stdc++.h>
#define TASKNAME "codeforce"
#define pb push_back
#define pli pair<ll,ll>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxn=4e5+10;
const ll inf=1e18;
const ll mod=1e9+7;
ll d[3][maxn];
ll n;
vector<ll>g[maxn];
ll a[maxn];
void dij(ll t,ll s)
{
for(int i=1;i<=n;i++) d[t][i]=inf;
d[t][s]=0;
priority_queue<pli,vector<pli>,greater<pli>>pq;
pq.push({d[t][s],s});
while(!pq.empty())
{
ll u=pq.top().se;
pq.pop();
for(int v:g[u])
{
if(d[t][v]>max(d[t][u]+1,a[v]))
{
d[t][v]=max(d[t][u]+1,a[v]);
pq.push({d[t][v],v});
}
}
}
}
ll m;
ll ans=inf;
void solve()
{
cin >> n >> m ;
for(int i=1;i<=n;i++)
{
cin >> a[i];
}
for(int i=1;i<=m;i++)
{
ll u,v;
cin >> u >> v;
g[u].pb(v);
g[v].pb(u);
}
dij(0,1);
dij(1,n);
for(int i=1;i<=n;i++)
{
if(abs(d[0][i]-d[1][i])<=1) ans=min(ans,d[0][i]+d[1][i]);
}
cout << ans;
}
int main()
{
fastio
//freopen("c.INP","r",stdin);
//freopen("c.OUT","w",stdout);
solve();
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
14680 KB |
Output is correct |
2 |
Correct |
58 ms |
28540 KB |
Output is correct |
3 |
Correct |
60 ms |
28828 KB |
Output is correct |
4 |
Correct |
60 ms |
29012 KB |
Output is correct |
5 |
Correct |
61 ms |
29520 KB |
Output is correct |
6 |
Correct |
66 ms |
29384 KB |
Output is correct |
7 |
Correct |
79 ms |
29608 KB |
Output is correct |
8 |
Correct |
4 ms |
14680 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
14680 KB |
Output is correct |
2 |
Correct |
3 ms |
14680 KB |
Output is correct |
3 |
Correct |
4 ms |
14684 KB |
Output is correct |
4 |
Correct |
4 ms |
14680 KB |
Output is correct |
5 |
Correct |
3 ms |
14684 KB |
Output is correct |
6 |
Correct |
4 ms |
14940 KB |
Output is correct |
7 |
Correct |
4 ms |
14920 KB |
Output is correct |
8 |
Correct |
4 ms |
14940 KB |
Output is correct |
9 |
Correct |
4 ms |
15092 KB |
Output is correct |
10 |
Correct |
4 ms |
14940 KB |
Output is correct |
11 |
Correct |
3 ms |
14936 KB |
Output is correct |
12 |
Correct |
4 ms |
14940 KB |
Output is correct |
13 |
Correct |
4 ms |
14940 KB |
Output is correct |
14 |
Correct |
4 ms |
14952 KB |
Output is correct |
15 |
Correct |
5 ms |
15056 KB |
Output is correct |
16 |
Correct |
4 ms |
15032 KB |
Output is correct |
17 |
Correct |
4 ms |
15056 KB |
Output is correct |
18 |
Correct |
3 ms |
14692 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
14680 KB |
Output is correct |
2 |
Correct |
3 ms |
14680 KB |
Output is correct |
3 |
Correct |
4 ms |
14684 KB |
Output is correct |
4 |
Correct |
4 ms |
14680 KB |
Output is correct |
5 |
Correct |
3 ms |
14684 KB |
Output is correct |
6 |
Correct |
4 ms |
14940 KB |
Output is correct |
7 |
Correct |
4 ms |
14920 KB |
Output is correct |
8 |
Correct |
4 ms |
14940 KB |
Output is correct |
9 |
Correct |
4 ms |
15092 KB |
Output is correct |
10 |
Correct |
4 ms |
14940 KB |
Output is correct |
11 |
Correct |
3 ms |
14936 KB |
Output is correct |
12 |
Correct |
4 ms |
14940 KB |
Output is correct |
13 |
Correct |
4 ms |
14940 KB |
Output is correct |
14 |
Correct |
4 ms |
14952 KB |
Output is correct |
15 |
Correct |
5 ms |
15056 KB |
Output is correct |
16 |
Correct |
4 ms |
15032 KB |
Output is correct |
17 |
Correct |
4 ms |
15056 KB |
Output is correct |
18 |
Correct |
3 ms |
14692 KB |
Output is correct |
19 |
Correct |
5 ms |
14844 KB |
Output is correct |
20 |
Correct |
5 ms |
14944 KB |
Output is correct |
21 |
Correct |
4 ms |
14772 KB |
Output is correct |
22 |
Correct |
4 ms |
14840 KB |
Output is correct |
23 |
Correct |
4 ms |
14788 KB |
Output is correct |
24 |
Correct |
4 ms |
14944 KB |
Output is correct |
25 |
Correct |
4 ms |
14940 KB |
Output is correct |
26 |
Correct |
4 ms |
14940 KB |
Output is correct |
27 |
Correct |
4 ms |
14944 KB |
Output is correct |
28 |
Correct |
4 ms |
14988 KB |
Output is correct |
29 |
Correct |
6 ms |
14944 KB |
Output is correct |
30 |
Correct |
4 ms |
14932 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
14680 KB |
Output is correct |
2 |
Correct |
58 ms |
28540 KB |
Output is correct |
3 |
Correct |
60 ms |
28828 KB |
Output is correct |
4 |
Correct |
60 ms |
29012 KB |
Output is correct |
5 |
Correct |
61 ms |
29520 KB |
Output is correct |
6 |
Correct |
66 ms |
29384 KB |
Output is correct |
7 |
Correct |
79 ms |
29608 KB |
Output is correct |
8 |
Correct |
4 ms |
14680 KB |
Output is correct |
9 |
Correct |
3 ms |
14680 KB |
Output is correct |
10 |
Correct |
3 ms |
14680 KB |
Output is correct |
11 |
Correct |
4 ms |
14684 KB |
Output is correct |
12 |
Correct |
4 ms |
14680 KB |
Output is correct |
13 |
Correct |
3 ms |
14684 KB |
Output is correct |
14 |
Correct |
4 ms |
14940 KB |
Output is correct |
15 |
Correct |
4 ms |
14920 KB |
Output is correct |
16 |
Correct |
4 ms |
14940 KB |
Output is correct |
17 |
Correct |
4 ms |
15092 KB |
Output is correct |
18 |
Correct |
4 ms |
14940 KB |
Output is correct |
19 |
Correct |
3 ms |
14936 KB |
Output is correct |
20 |
Correct |
4 ms |
14940 KB |
Output is correct |
21 |
Correct |
4 ms |
14940 KB |
Output is correct |
22 |
Correct |
4 ms |
14952 KB |
Output is correct |
23 |
Correct |
5 ms |
15056 KB |
Output is correct |
24 |
Correct |
4 ms |
15032 KB |
Output is correct |
25 |
Correct |
4 ms |
15056 KB |
Output is correct |
26 |
Correct |
3 ms |
14692 KB |
Output is correct |
27 |
Correct |
5 ms |
14844 KB |
Output is correct |
28 |
Correct |
5 ms |
14944 KB |
Output is correct |
29 |
Correct |
4 ms |
14772 KB |
Output is correct |
30 |
Correct |
4 ms |
14840 KB |
Output is correct |
31 |
Correct |
4 ms |
14788 KB |
Output is correct |
32 |
Correct |
4 ms |
14944 KB |
Output is correct |
33 |
Correct |
4 ms |
14940 KB |
Output is correct |
34 |
Correct |
4 ms |
14940 KB |
Output is correct |
35 |
Correct |
4 ms |
14944 KB |
Output is correct |
36 |
Correct |
4 ms |
14988 KB |
Output is correct |
37 |
Correct |
6 ms |
14944 KB |
Output is correct |
38 |
Correct |
4 ms |
14932 KB |
Output is correct |
39 |
Correct |
191 ms |
30664 KB |
Output is correct |
40 |
Correct |
121 ms |
29628 KB |
Output is correct |
41 |
Correct |
98 ms |
29868 KB |
Output is correct |
42 |
Correct |
102 ms |
29792 KB |
Output is correct |
43 |
Correct |
111 ms |
29776 KB |
Output is correct |
44 |
Correct |
128 ms |
29776 KB |
Output is correct |
45 |
Correct |
113 ms |
29524 KB |
Output is correct |
46 |
Correct |
142 ms |
29900 KB |
Output is correct |
47 |
Correct |
154 ms |
29696 KB |
Output is correct |
48 |
Correct |
126 ms |
29704 KB |
Output is correct |
49 |
Correct |
196 ms |
30684 KB |
Output is correct |
50 |
Correct |
211 ms |
30328 KB |
Output is correct |
51 |
Correct |
168 ms |
30468 KB |
Output is correct |
52 |
Correct |
267 ms |
36536 KB |
Output is correct |
53 |
Correct |
194 ms |
35176 KB |
Output is correct |
54 |
Correct |
184 ms |
35136 KB |
Output is correct |
55 |
Correct |
234 ms |
35360 KB |
Output is correct |
56 |
Correct |
306 ms |
40392 KB |
Output is correct |
57 |
Correct |
325 ms |
40632 KB |
Output is correct |
58 |
Correct |
309 ms |
41648 KB |
Output is correct |
59 |
Correct |
335 ms |
41724 KB |
Output is correct |
60 |
Correct |
291 ms |
41444 KB |
Output is correct |
61 |
Correct |
318 ms |
41192 KB |
Output is correct |
62 |
Correct |
290 ms |
40320 KB |
Output is correct |
63 |
Correct |
269 ms |
40292 KB |
Output is correct |
64 |
Correct |
345 ms |
40368 KB |
Output is correct |
65 |
Correct |
319 ms |
40416 KB |
Output is correct |
66 |
Correct |
356 ms |
40468 KB |
Output is correct |
67 |
Correct |
378 ms |
41600 KB |
Output is correct |