#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC target("avx2")
#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[70][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);
}
}
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,69);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;
priority_queue<pair<double,pii>,vector<pair<double,pii>>,greater<pair<double,pii>>>q;d[0][0]=0;q.push({0,{0,0}});
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)continue;
for(auto v:g[u.s.s]){
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}});
}
}
}double ans=1e17;
for(int i=0;i<=K;i++)ans=min(ans,d[i][H]);
for(int i=0;i<N;i++)g[i].clear();memset(vis,0,sizeof vis);
return (ans>=1e17?-1:ans);
}
Compilation message
cyberland.cpp: In function 'double solve(int, int, int, int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
cyberland.cpp:43:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
43 | for(int i=0;i<N;i++)g[i].clear();memset(vis,0,sizeof vis);
| ^~~
cyberland.cpp:43:38: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
43 | for(int i=0;i<N;i++)g[i].clear();memset(vis,0,sizeof vis);
| ^~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
34 ms |
29016 KB |
Correct. |
2 |
Correct |
29 ms |
29020 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
18 ms |
29020 KB |
Correct. |
2 |
Correct |
26 ms |
29020 KB |
Correct. |
3 |
Correct |
20 ms |
29016 KB |
Correct. |
4 |
Correct |
20 ms |
29012 KB |
Correct. |
5 |
Correct |
20 ms |
29020 KB |
Correct. |
6 |
Correct |
19 ms |
29776 KB |
Correct. |
7 |
Correct |
23 ms |
29788 KB |
Correct. |
8 |
Correct |
13 ms |
30552 KB |
Correct. |
9 |
Correct |
20 ms |
28764 KB |
Correct. |
10 |
Correct |
19 ms |
28760 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
22 ms |
29016 KB |
Correct. |
2 |
Correct |
22 ms |
29016 KB |
Correct. |
3 |
Correct |
20 ms |
29016 KB |
Correct. |
4 |
Correct |
27 ms |
28764 KB |
Correct. |
5 |
Correct |
27 ms |
28940 KB |
Correct. |
6 |
Correct |
7 ms |
29788 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
205 ms |
39644 KB |
Correct. |
2 |
Correct |
255 ms |
29320 KB |
Correct. |
3 |
Correct |
228 ms |
29368 KB |
Correct. |
4 |
Correct |
245 ms |
29416 KB |
Correct. |
5 |
Correct |
204 ms |
29008 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
18 ms |
29020 KB |
Correct. |
2 |
Correct |
19 ms |
29020 KB |
Correct. |
3 |
Correct |
17 ms |
29016 KB |
Correct. |
4 |
Correct |
28 ms |
30192 KB |
Correct. |
5 |
Correct |
20 ms |
28764 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
17 ms |
29016 KB |
Correct. |
2 |
Correct |
17 ms |
29164 KB |
Correct. |
3 |
Correct |
29 ms |
35420 KB |
Correct. |
4 |
Correct |
13 ms |
30040 KB |
Correct. |
5 |
Correct |
19 ms |
28764 KB |
Correct. |
6 |
Correct |
22 ms |
29268 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
289 ms |
30044 KB |
Correct. |
2 |
Correct |
39 ms |
30856 KB |
Correct. |
3 |
Correct |
523 ms |
28944 KB |
Correct. |
4 |
Correct |
423 ms |
27712 KB |
Correct. |
5 |
Correct |
908 ms |
69128 KB |
Correct. |
6 |
Correct |
402 ms |
69296 KB |
Correct. |
7 |
Correct |
420 ms |
29116 KB |
Correct. |
8 |
Correct |
439 ms |
29520 KB |
Correct. |
9 |
Correct |
213 ms |
30504 KB |
Correct. |
10 |
Correct |
249 ms |
30028 KB |
Correct. |
11 |
Correct |
428 ms |
29260 KB |
Correct. |
12 |
Correct |
269 ms |
30072 KB |
Correct. |
13 |
Correct |
272 ms |
29992 KB |
Correct. |
14 |
Correct |
334 ms |
32524 KB |
Correct. |
15 |
Correct |
402 ms |
30780 KB |
Correct. |
16 |
Correct |
221 ms |
30004 KB |
Correct. |
17 |
Correct |
275 ms |
29924 KB |
Correct. |
18 |
Correct |
254 ms |
29940 KB |
Correct. |
19 |
Correct |
678 ms |
30108 KB |
Correct. |
20 |
Correct |
21 ms |
29272 KB |
Correct. |
21 |
Correct |
20 ms |
29476 KB |
Correct. |
22 |
Correct |
34 ms |
31448 KB |
Correct. |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
791 ms |
61396 KB |
Correct. |
2 |
Correct |
129 ms |
64348 KB |
Correct. |
3 |
Correct |
426 ms |
67408 KB |
Correct. |
4 |
Correct |
972 ms |
60112 KB |
Correct. |
5 |
Execution timed out |
3047 ms |
195576 KB |
Time limit exceeded |
6 |
Halted |
0 ms |
0 KB |
- |