#include "cyberland.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int MAXN = 1e5;
const double INF = 1e18;
const double eps = 1e-10;
int N, M, K, H, A[MAXN+10];
vector<pii> adj[MAXN+10];
double dist[MAXN+10][40], P[40];
struct Queue
{
int v, k; double w;
bool operator < (const Queue &p) const { return w>p.w; }
};
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) {
N=_N; M=_M; K=_K; H=_H+1;
for(int i=1; i<=N; i++) A[i]=_arr[i-1];
for(int i=0; i<M; i++)
{
int u=_x[i]+1, v=_y[i]+1, w=_c[i];
adj[u].push_back({v, w});
adj[v].push_back({u, w});
}
K=min(K, 30);
for(int i=1; i<=N; i++) for(int j=0; j<=K; j++) dist[i][j]=INF;
priority_queue<Queue> PQ;
dist[H][0]=0;
PQ.push({H, 0, 0});
P[0]=1;
for(int i=1; i<=K; i++) P[i]=P[i-1]/2;
while(!PQ.empty())
{
Queue now=PQ.top(); PQ.pop();
if(fabs(dist[now.v][now.k]-now.w)>eps) continue;
//printf("%d %d %.10lf\n", now.v, now.k, now.w);
for(auto nxt : adj[now.v])
{
if(now.w+P[now.k]*nxt.second<dist[nxt.first][now.k])
{
dist[nxt.first][now.k]=now.w+P[now.k]*nxt.second;
PQ.push({nxt.first, now.k, now.w+P[now.k]*nxt.second});
}
}
if(A[now.v]==2)
{
for(auto nxt : adj[now.v])
{
if(now.w+P[now.k+1]*nxt.second<dist[nxt.first][now.k+1])
{
dist[nxt.first][now.k+1]=now.w+P[now.k+1]*nxt.second;
PQ.push({nxt.first, now.k+1, now.w+P[now.k+1]*nxt.second});
}
}
}
}
double ans=INF;
for(int i=1; i<=N; i++)
{
adj[i].clear();
for(int j=0; j<=K; j++)
{
if(A[i]==0 || i==1) ans=min(ans, dist[i][j]);
dist[i][j]=0;
}
}
if(ans>INF-100) ans=-1;
return ans;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
25 ms |
2824 KB |
Wrong Answer. |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
21 ms |
3084 KB |
Correct. |
2 |
Correct |
24 ms |
3084 KB |
Correct. |
3 |
Correct |
24 ms |
3084 KB |
Correct. |
4 |
Correct |
29 ms |
3048 KB |
Correct. |
5 |
Correct |
26 ms |
3112 KB |
Correct. |
6 |
Correct |
24 ms |
6476 KB |
Correct. |
7 |
Correct |
31 ms |
6356 KB |
Correct. |
8 |
Correct |
16 ms |
10196 KB |
Correct. |
9 |
Correct |
24 ms |
2760 KB |
Correct. |
10 |
Correct |
23 ms |
2644 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
28 ms |
3100 KB |
Wrong Answer. |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
245 ms |
24776 KB |
Wrong Answer. |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
21 ms |
3156 KB |
Correct. |
2 |
Correct |
24 ms |
3164 KB |
Correct. |
3 |
Correct |
26 ms |
3144 KB |
Correct. |
4 |
Correct |
26 ms |
6484 KB |
Correct. |
5 |
Correct |
24 ms |
2644 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
25 ms |
3284 KB |
Wrong Answer. |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
118 ms |
3244 KB |
Wrong Answer. |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
119 ms |
3140 KB |
Wrong Answer. |
2 |
Halted |
0 ms |
0 KB |
- |