#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define plx pair<ll,int>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
using namespace std;
const int mxn=1e5+5;
vector<pair<int,double>>g[mxn];
double d[67][mxn]{0};
bool vis[mxn]{0};
void dfs(int u,int n){
vis[u]=1;
for(auto v:g[u]){
if(v.f==n||vis[v.f])continue;
dfs(v.f,n);
}
}
priority_queue<pair<double,pii>,vector<pair<double,pii>>,greater<pair<double,pii>>>q;
double solve(int N, int M, int K, int H, std::vector<int> x, std::vector<int> y, std::vector<int> c, std::vector<int> arr){
K=min(K,66);for(int i=0;i<M;i++)g[x[i]].pb({y[i],c[i]}),g[y[i]].pb({x[i],c[i]});dfs(0,H);
for(int i=0;i<=K;i++)for(int j=0;j<N;j++)d[i][j]=1e17;
d[0][0]=0;q.push({0,{0,0}});arr[0]=0;double ans=1e17;
for(int i=1;i<N;i++)if(arr[i]==0&&vis[i])d[0][i]=0,q.push({0,{0,i}});
while(!q.empty()){
auto u=q.top();q.pop();
if(d[u.s.f][u.s.s]<u.f)continue;
if(u.s.s==H){ans=min(ans,u.f);continue;}
for(auto v:g[u.s.s]){
if(!arr[v.f])continue;
if(d[u.s.f][v.f]>u.f+v.s)d[u.s.f][v.f]=u.f+v.s,q.push({u.f+v.s,{u.s.f,v.f}});
if(arr[v.f]==2&&u.s.f<K){
double t = (u.f+v.s)/2;
if(d[u.s.f+1][v.f]>t)d[u.s.f+1][v.f]=t,q.push({t,{u.s.f+1,v.f}});
}
}
}for(int i=0;i<N;i++)g[i].clear();memset(vis,0,sizeof vis);
return (ans>=1e17?-1:ans);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
26 ms |
28508 KB |
Correct. |
2 |
Correct |
25 ms |
28508 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
17 ms |
28760 KB |
Correct. |
2 |
Correct |
20 ms |
28764 KB |
Correct. |
3 |
Correct |
20 ms |
28736 KB |
Correct. |
4 |
Correct |
20 ms |
28764 KB |
Correct. |
5 |
Correct |
20 ms |
28764 KB |
Correct. |
6 |
Correct |
20 ms |
29416 KB |
Correct. |
7 |
Correct |
24 ms |
29532 KB |
Correct. |
8 |
Correct |
12 ms |
30300 KB |
Correct. |
9 |
Correct |
19 ms |
28516 KB |
Correct. |
10 |
Correct |
19 ms |
28508 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
21 ms |
28760 KB |
Correct. |
2 |
Correct |
21 ms |
28760 KB |
Correct. |
3 |
Correct |
20 ms |
28764 KB |
Correct. |
4 |
Correct |
21 ms |
28632 KB |
Correct. |
5 |
Correct |
25 ms |
28508 KB |
Correct. |
6 |
Correct |
7 ms |
29276 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
135 ms |
35532 KB |
Correct. |
2 |
Correct |
175 ms |
28784 KB |
Correct. |
3 |
Correct |
153 ms |
29520 KB |
Correct. |
4 |
Correct |
153 ms |
29520 KB |
Correct. |
5 |
Correct |
140 ms |
29192 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
17 ms |
28764 KB |
Correct. |
2 |
Correct |
19 ms |
28764 KB |
Correct. |
3 |
Correct |
18 ms |
28872 KB |
Correct. |
4 |
Correct |
21 ms |
30000 KB |
Correct. |
5 |
Correct |
18 ms |
28508 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
19 ms |
28764 KB |
Correct. |
2 |
Correct |
19 ms |
28764 KB |
Correct. |
3 |
Correct |
33 ms |
35164 KB |
Correct. |
4 |
Correct |
14 ms |
29532 KB |
Correct. |
5 |
Correct |
19 ms |
28636 KB |
Correct. |
6 |
Correct |
18 ms |
28816 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
178 ms |
29016 KB |
Correct. |
2 |
Correct |
27 ms |
29404 KB |
Correct. |
3 |
Correct |
472 ms |
30352 KB |
Correct. |
4 |
Correct |
432 ms |
28704 KB |
Correct. |
5 |
Correct |
590 ms |
69800 KB |
Correct. |
6 |
Correct |
284 ms |
53692 KB |
Correct. |
7 |
Correct |
405 ms |
30488 KB |
Correct. |
8 |
Correct |
419 ms |
30288 KB |
Correct. |
9 |
Correct |
160 ms |
29908 KB |
Correct. |
10 |
Correct |
163 ms |
29768 KB |
Correct. |
11 |
Correct |
398 ms |
30132 KB |
Correct. |
12 |
Correct |
163 ms |
29920 KB |
Correct. |
13 |
Correct |
178 ms |
29900 KB |
Correct. |
14 |
Correct |
362 ms |
33388 KB |
Correct. |
15 |
Correct |
411 ms |
31484 KB |
Correct. |
16 |
Correct |
156 ms |
29896 KB |
Correct. |
17 |
Correct |
173 ms |
29896 KB |
Correct. |
18 |
Correct |
181 ms |
29900 KB |
Correct. |
19 |
Correct |
383 ms |
30312 KB |
Correct. |
20 |
Correct |
15 ms |
28764 KB |
Correct. |
21 |
Correct |
17 ms |
29020 KB |
Correct. |
22 |
Correct |
28 ms |
31448 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
553 ms |
40304 KB |
Correct. |
2 |
Correct |
79 ms |
41672 KB |
Correct. |
3 |
Correct |
418 ms |
66896 KB |
Correct. |
4 |
Correct |
842 ms |
42612 KB |
Correct. |
5 |
Correct |
2137 ms |
118392 KB |
Correct. |
6 |
Correct |
1108 ms |
111300 KB |
Correct. |
7 |
Correct |
999 ms |
53976 KB |
Correct. |
8 |
Correct |
983 ms |
39112 KB |
Correct. |
9 |
Correct |
518 ms |
41980 KB |
Correct. |
10 |
Correct |
594 ms |
39804 KB |
Correct. |
11 |
Correct |
1802 ms |
39868 KB |
Correct. |
12 |
Correct |
533 ms |
39376 KB |
Correct. |
13 |
Correct |
630 ms |
39620 KB |
Correct. |
14 |
Execution timed out |
3015 ms |
117216 KB |
Time limit exceeded |
15 |
Halted |
0 ms |
0 KB |
- |