#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,int>>g[mxn];
double d[67][mxn]{0};
int pr[mxn]{0};
int get(int r){
return pr[r]==r?r:pr[r]=get(pr[r]);
}
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){
iota(pr,pr+N,0);
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]});
if(x[i]==H||y[i]==H)continue;
pr[get(x[i])]=get(y[i]);
}
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&&get(i)==get(0))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)/2.0;
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();
return (ans>=1e17?-1:ans);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
11 ms |
12632 KB |
Correct. |
2 |
Correct |
11 ms |
12636 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
14 ms |
12636 KB |
Correct. |
2 |
Correct |
17 ms |
12636 KB |
Correct. |
3 |
Correct |
17 ms |
12636 KB |
Correct. |
4 |
Correct |
20 ms |
14680 KB |
Correct. |
5 |
Correct |
18 ms |
12792 KB |
Correct. |
6 |
Correct |
18 ms |
14684 KB |
Correct. |
7 |
Correct |
22 ms |
14724 KB |
Correct. |
8 |
Correct |
12 ms |
16956 KB |
Correct. |
9 |
Correct |
17 ms |
12380 KB |
Correct. |
10 |
Correct |
17 ms |
14424 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
20 ms |
12632 KB |
Correct. |
2 |
Correct |
19 ms |
12788 KB |
Correct. |
3 |
Correct |
18 ms |
12688 KB |
Correct. |
4 |
Correct |
19 ms |
12380 KB |
Correct. |
5 |
Correct |
19 ms |
12380 KB |
Correct. |
6 |
Correct |
7 ms |
14428 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
138 ms |
28232 KB |
Correct. |
2 |
Correct |
173 ms |
14928 KB |
Correct. |
3 |
Correct |
148 ms |
12884 KB |
Correct. |
4 |
Correct |
162 ms |
12724 KB |
Correct. |
5 |
Correct |
138 ms |
14424 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
16 ms |
12632 KB |
Correct. |
2 |
Correct |
18 ms |
14684 KB |
Correct. |
3 |
Correct |
20 ms |
12632 KB |
Correct. |
4 |
Correct |
22 ms |
14708 KB |
Correct. |
5 |
Correct |
24 ms |
12380 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
18 ms |
3420 KB |
Correct. |
2 |
Correct |
30 ms |
3316 KB |
Correct. |
3 |
Correct |
45 ms |
26704 KB |
Correct. |
4 |
Correct |
23 ms |
5212 KB |
Correct. |
5 |
Correct |
16 ms |
2908 KB |
Correct. |
6 |
Correct |
19 ms |
3420 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
200 ms |
3488 KB |
Correct. |
2 |
Correct |
34 ms |
4056 KB |
Correct. |
3 |
Correct |
626 ms |
26820 KB |
Correct. |
4 |
Correct |
454 ms |
19872 KB |
Correct. |
5 |
Correct |
746 ms |
58284 KB |
Correct. |
6 |
Correct |
346 ms |
38068 KB |
Correct. |
7 |
Correct |
441 ms |
19400 KB |
Correct. |
8 |
Correct |
435 ms |
17116 KB |
Correct. |
9 |
Correct |
172 ms |
17100 KB |
Correct. |
10 |
Correct |
179 ms |
17272 KB |
Correct. |
11 |
Correct |
399 ms |
17024 KB |
Correct. |
12 |
Correct |
161 ms |
17368 KB |
Correct. |
13 |
Correct |
176 ms |
17088 KB |
Correct. |
14 |
Correct |
360 ms |
21764 KB |
Correct. |
15 |
Correct |
429 ms |
18392 KB |
Correct. |
16 |
Correct |
179 ms |
13268 KB |
Correct. |
17 |
Correct |
197 ms |
13268 KB |
Correct. |
18 |
Correct |
192 ms |
13256 KB |
Correct. |
19 |
Correct |
429 ms |
13024 KB |
Correct. |
20 |
Correct |
14 ms |
12632 KB |
Correct. |
21 |
Correct |
17 ms |
13144 KB |
Correct. |
22 |
Correct |
26 ms |
15052 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
639 ms |
6092 KB |
Correct. |
2 |
Correct |
75 ms |
7616 KB |
Correct. |
3 |
Correct |
470 ms |
61776 KB |
Correct. |
4 |
Correct |
976 ms |
15812 KB |
Correct. |
5 |
Correct |
2313 ms |
99952 KB |
Correct. |
6 |
Correct |
1126 ms |
86684 KB |
Correct. |
7 |
Correct |
981 ms |
30220 KB |
Correct. |
8 |
Correct |
1025 ms |
13900 KB |
Correct. |
9 |
Correct |
540 ms |
15048 KB |
Correct. |
10 |
Correct |
526 ms |
15300 KB |
Correct. |
11 |
Correct |
1792 ms |
14860 KB |
Correct. |
12 |
Correct |
538 ms |
15192 KB |
Correct. |
13 |
Correct |
599 ms |
15124 KB |
Correct. |
14 |
Execution timed out |
3054 ms |
99936 KB |
Time limit exceeded |
15 |
Halted |
0 ms |
0 KB |
- |