#include "cyberland.h"
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const ll oo = 1e18;
const int MAX = 1e5 + 5;
const int MAXK = 90;
struct edge{
int u, c;
};
int n, k, f;
int A[MAX];
vector<edge> g[MAX];
bool visited[MAX];
vector<int> starts;
void dfs(int node){
visited[node] = 1;
for(auto& e:g[node]){
if(visited[e.u]) continue;
dfs(e.u);
}
}
double dist[MAX][MAXK + 1];
void dijkstra(){
priority_queue<pair<double, pair<int, int>>> st;
for (int i = 0; i < n; i++)
{
for (int j = 0; j <= k; j++)
{
dist[i][j] = oo;
}
}
for(int a:starts){
dist[a][k] = 0;
st.push({0, {a, k}});
}
while(!st.empty()){
double d = -st.top().first;
int node = st.top().second.first;
int l = st.top().second.second;
st.pop();
if(dist[node][l] != d) continue;
for(auto& e:g[node]){
double b = d + e.c;
if(b < dist[e.u][l]){
dist[e.u][l] = b;
st.push({-dist[e.u][l], {e.u, l}});
}
if(l == 0 || A[e.u] != 2) continue;
if(b / 2 < dist[e.u][l - 1]){
dist[e.u][l - 1] = b / 2;
st.push({-dist[e.u][l - 1], {e.u, l - 1}});
}
}
}
}
double solve(int N, int M, int K, int H, vector<int> x, vector<int> y, vector<int> c, vector<int> arr) {
n = N;
k = min(MAXK, K);
f = H;
starts.clear();
for (int i = 0; i < n; i++)
{
A[i] = arr[i];
g[i].clear();
visited[i] = 0;
}
for (int i = 0; i < M; i++)
{
g[x[i]].push_back({y[i], c[i]});
g[y[i]].push_back({x[i], c[i]});
}
g[f].clear();
dfs(0);
starts.push_back(0);
for (int i = 0; i < n; i++)
{
if(visited[i] && A[i] == 0){
starts.push_back(i);
}
}
dijkstra();
double ans = oo;
for(int i = 0; i <= k; ++i){
ans = min(ans, dist[f][i]);
}
if(ans == oo){
return -1;
}
else{
return ans;
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
18 ms |
2772 KB |
Correct. |
2 |
Correct |
18 ms |
2736 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
19 ms |
3528 KB |
Correct. |
2 |
Correct |
23 ms |
3460 KB |
Correct. |
3 |
Correct |
22 ms |
3532 KB |
Correct. |
4 |
Correct |
23 ms |
3412 KB |
Correct. |
5 |
Correct |
22 ms |
3560 KB |
Correct. |
6 |
Correct |
23 ms |
10452 KB |
Correct. |
7 |
Correct |
28 ms |
10196 KB |
Correct. |
8 |
Correct |
17 ms |
18044 KB |
Correct. |
9 |
Correct |
21 ms |
2820 KB |
Correct. |
10 |
Correct |
20 ms |
2816 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
29 ms |
3412 KB |
Correct. |
2 |
Correct |
22 ms |
3552 KB |
Correct. |
3 |
Correct |
26 ms |
3580 KB |
Correct. |
4 |
Correct |
22 ms |
2808 KB |
Correct. |
5 |
Correct |
22 ms |
2808 KB |
Correct. |
6 |
Correct |
8 ms |
9136 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
229 ms |
52508 KB |
Correct. |
2 |
Correct |
272 ms |
3876 KB |
Correct. |
3 |
Correct |
234 ms |
3916 KB |
Correct. |
4 |
Correct |
255 ms |
3888 KB |
Correct. |
5 |
Correct |
209 ms |
2892 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
19 ms |
3540 KB |
Correct. |
2 |
Correct |
28 ms |
3460 KB |
Correct. |
3 |
Correct |
21 ms |
3472 KB |
Correct. |
4 |
Correct |
23 ms |
10460 KB |
Correct. |
5 |
Correct |
19 ms |
2800 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
21 ms |
3584 KB |
Correct. |
2 |
Correct |
22 ms |
3488 KB |
Correct. |
3 |
Correct |
50 ms |
62036 KB |
Correct. |
4 |
Correct |
19 ms |
8356 KB |
Correct. |
5 |
Correct |
20 ms |
2772 KB |
Correct. |
6 |
Correct |
19 ms |
3520 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
279 ms |
4460 KB |
Correct. |
2 |
Correct |
38 ms |
5692 KB |
Correct. |
3 |
Correct |
574 ms |
79572 KB |
Correct. |
4 |
Correct |
478 ms |
20476 KB |
Correct. |
5 |
Correct |
1010 ms |
66140 KB |
Correct. |
6 |
Correct |
463 ms |
47044 KB |
Correct. |
7 |
Correct |
460 ms |
22052 KB |
Correct. |
8 |
Correct |
479 ms |
5816 KB |
Correct. |
9 |
Correct |
234 ms |
4960 KB |
Correct. |
10 |
Correct |
238 ms |
4536 KB |
Correct. |
11 |
Correct |
469 ms |
3936 KB |
Correct. |
12 |
Correct |
251 ms |
4544 KB |
Correct. |
13 |
Correct |
270 ms |
4544 KB |
Correct. |
14 |
Correct |
391 ms |
40456 KB |
Correct. |
15 |
Correct |
448 ms |
13320 KB |
Correct. |
16 |
Correct |
238 ms |
4496 KB |
Correct. |
17 |
Correct |
294 ms |
4368 KB |
Correct. |
18 |
Correct |
295 ms |
4476 KB |
Correct. |
19 |
Correct |
685 ms |
4392 KB |
Correct. |
20 |
Correct |
20 ms |
3132 KB |
Correct. |
21 |
Correct |
20 ms |
3908 KB |
Correct. |
22 |
Correct |
32 ms |
5896 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1241 ms |
7548 KB |
Correct. |
2 |
Correct |
156 ms |
11288 KB |
Correct. |
3 |
Correct |
768 ms |
82592 KB |
Correct. |
4 |
Correct |
1161 ms |
10696 KB |
Correct. |
5 |
Execution timed out |
3080 ms |
164676 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |