#include "race.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define fr first
#define sc second
#define all(x) x.begin(),x.end()
const ll NN=2e5+5;
vector<pair<int,int>> g[NN];
ll ans=1e9,k;
map<ll,ll> mp[NN];
void dfs(int x, int p, ll d, int depth){
mp[x][d]=depth;
for(auto it: g[x]){
if(it.fr==p) continue;
dfs(it.fr,x,d+it.sc,depth+1);
if(mp[x].size()<mp[it.fr].size())
swap(mp[x],mp[it.fr]);
for(auto i: mp[it.fr]){
ll target=k-i.fr+2*d;
if(mp[x].find(target)!=mp[x].end()){
ans=min(ans,mp[x][target]+i.sc-2*depth);
}
}
for(auto i: mp[it.fr]){
if(mp[x].find(i.fr)==mp[x].end()){
mp[x].insert(i);
}
else{
mp[x][i.fr]=min(mp[x][i.fr],i.sc);
}
}
}
}
int best_path(int N, int K, int H[][2], int L[]){
k=K;
ans=N;
for(int i=0;i<N-1;i++){
int a=H[i][0],b=H[i][1],c=L[i];
g[a].pb({b,c});
g[b].pb({a,c});
}
dfs(0,-1,0,0);
if(ans==N) ans=-1;
return ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
14420 KB |
Output is correct |
2 |
Correct |
7 ms |
14440 KB |
Output is correct |
3 |
Correct |
7 ms |
14436 KB |
Output is correct |
4 |
Correct |
9 ms |
14420 KB |
Output is correct |
5 |
Correct |
7 ms |
14420 KB |
Output is correct |
6 |
Correct |
7 ms |
14420 KB |
Output is correct |
7 |
Correct |
8 ms |
14348 KB |
Output is correct |
8 |
Correct |
7 ms |
14400 KB |
Output is correct |
9 |
Correct |
7 ms |
14436 KB |
Output is correct |
10 |
Correct |
7 ms |
14400 KB |
Output is correct |
11 |
Correct |
7 ms |
14440 KB |
Output is correct |
12 |
Correct |
7 ms |
14420 KB |
Output is correct |
13 |
Correct |
7 ms |
14420 KB |
Output is correct |
14 |
Correct |
7 ms |
14420 KB |
Output is correct |
15 |
Correct |
7 ms |
14420 KB |
Output is correct |
16 |
Correct |
8 ms |
14420 KB |
Output is correct |
17 |
Correct |
8 ms |
14420 KB |
Output is correct |
18 |
Correct |
8 ms |
14400 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
14420 KB |
Output is correct |
2 |
Correct |
7 ms |
14440 KB |
Output is correct |
3 |
Correct |
7 ms |
14436 KB |
Output is correct |
4 |
Correct |
9 ms |
14420 KB |
Output is correct |
5 |
Correct |
7 ms |
14420 KB |
Output is correct |
6 |
Correct |
7 ms |
14420 KB |
Output is correct |
7 |
Correct |
8 ms |
14348 KB |
Output is correct |
8 |
Correct |
7 ms |
14400 KB |
Output is correct |
9 |
Correct |
7 ms |
14436 KB |
Output is correct |
10 |
Correct |
7 ms |
14400 KB |
Output is correct |
11 |
Correct |
7 ms |
14440 KB |
Output is correct |
12 |
Correct |
7 ms |
14420 KB |
Output is correct |
13 |
Correct |
7 ms |
14420 KB |
Output is correct |
14 |
Correct |
7 ms |
14420 KB |
Output is correct |
15 |
Correct |
7 ms |
14420 KB |
Output is correct |
16 |
Correct |
8 ms |
14420 KB |
Output is correct |
17 |
Correct |
8 ms |
14420 KB |
Output is correct |
18 |
Correct |
8 ms |
14400 KB |
Output is correct |
19 |
Correct |
7 ms |
14292 KB |
Output is correct |
20 |
Correct |
7 ms |
14420 KB |
Output is correct |
21 |
Correct |
8 ms |
14532 KB |
Output is correct |
22 |
Correct |
8 ms |
14696 KB |
Output is correct |
23 |
Correct |
8 ms |
14688 KB |
Output is correct |
24 |
Correct |
11 ms |
14676 KB |
Output is correct |
25 |
Correct |
10 ms |
14676 KB |
Output is correct |
26 |
Correct |
9 ms |
14676 KB |
Output is correct |
27 |
Correct |
8 ms |
14548 KB |
Output is correct |
28 |
Correct |
8 ms |
14676 KB |
Output is correct |
29 |
Correct |
9 ms |
14676 KB |
Output is correct |
30 |
Correct |
8 ms |
14596 KB |
Output is correct |
31 |
Correct |
8 ms |
14676 KB |
Output is correct |
32 |
Correct |
9 ms |
14704 KB |
Output is correct |
33 |
Correct |
8 ms |
14668 KB |
Output is correct |
34 |
Correct |
8 ms |
14664 KB |
Output is correct |
35 |
Correct |
8 ms |
14668 KB |
Output is correct |
36 |
Correct |
10 ms |
14536 KB |
Output is correct |
37 |
Correct |
8 ms |
14532 KB |
Output is correct |
38 |
Correct |
8 ms |
14548 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
14420 KB |
Output is correct |
2 |
Correct |
7 ms |
14440 KB |
Output is correct |
3 |
Correct |
7 ms |
14436 KB |
Output is correct |
4 |
Correct |
9 ms |
14420 KB |
Output is correct |
5 |
Correct |
7 ms |
14420 KB |
Output is correct |
6 |
Correct |
7 ms |
14420 KB |
Output is correct |
7 |
Correct |
8 ms |
14348 KB |
Output is correct |
8 |
Correct |
7 ms |
14400 KB |
Output is correct |
9 |
Correct |
7 ms |
14436 KB |
Output is correct |
10 |
Correct |
7 ms |
14400 KB |
Output is correct |
11 |
Correct |
7 ms |
14440 KB |
Output is correct |
12 |
Correct |
7 ms |
14420 KB |
Output is correct |
13 |
Correct |
7 ms |
14420 KB |
Output is correct |
14 |
Correct |
7 ms |
14420 KB |
Output is correct |
15 |
Correct |
7 ms |
14420 KB |
Output is correct |
16 |
Correct |
8 ms |
14420 KB |
Output is correct |
17 |
Correct |
8 ms |
14420 KB |
Output is correct |
18 |
Correct |
8 ms |
14400 KB |
Output is correct |
19 |
Correct |
121 ms |
36144 KB |
Output is correct |
20 |
Correct |
122 ms |
36172 KB |
Output is correct |
21 |
Correct |
133 ms |
35936 KB |
Output is correct |
22 |
Correct |
128 ms |
35452 KB |
Output is correct |
23 |
Correct |
156 ms |
48232 KB |
Output is correct |
24 |
Correct |
128 ms |
38944 KB |
Output is correct |
25 |
Correct |
109 ms |
36020 KB |
Output is correct |
26 |
Correct |
59 ms |
43468 KB |
Output is correct |
27 |
Correct |
188 ms |
46328 KB |
Output is correct |
28 |
Correct |
316 ms |
85480 KB |
Output is correct |
29 |
Correct |
342 ms |
83856 KB |
Output is correct |
30 |
Correct |
241 ms |
46308 KB |
Output is correct |
31 |
Correct |
200 ms |
46424 KB |
Output is correct |
32 |
Correct |
270 ms |
46404 KB |
Output is correct |
33 |
Correct |
241 ms |
51228 KB |
Output is correct |
34 |
Correct |
355 ms |
84116 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
14420 KB |
Output is correct |
2 |
Correct |
7 ms |
14440 KB |
Output is correct |
3 |
Correct |
7 ms |
14436 KB |
Output is correct |
4 |
Correct |
9 ms |
14420 KB |
Output is correct |
5 |
Correct |
7 ms |
14420 KB |
Output is correct |
6 |
Correct |
7 ms |
14420 KB |
Output is correct |
7 |
Correct |
8 ms |
14348 KB |
Output is correct |
8 |
Correct |
7 ms |
14400 KB |
Output is correct |
9 |
Correct |
7 ms |
14436 KB |
Output is correct |
10 |
Correct |
7 ms |
14400 KB |
Output is correct |
11 |
Correct |
7 ms |
14440 KB |
Output is correct |
12 |
Correct |
7 ms |
14420 KB |
Output is correct |
13 |
Correct |
7 ms |
14420 KB |
Output is correct |
14 |
Correct |
7 ms |
14420 KB |
Output is correct |
15 |
Correct |
7 ms |
14420 KB |
Output is correct |
16 |
Correct |
8 ms |
14420 KB |
Output is correct |
17 |
Correct |
8 ms |
14420 KB |
Output is correct |
18 |
Correct |
8 ms |
14400 KB |
Output is correct |
19 |
Correct |
7 ms |
14292 KB |
Output is correct |
20 |
Correct |
7 ms |
14420 KB |
Output is correct |
21 |
Correct |
8 ms |
14532 KB |
Output is correct |
22 |
Correct |
8 ms |
14696 KB |
Output is correct |
23 |
Correct |
8 ms |
14688 KB |
Output is correct |
24 |
Correct |
11 ms |
14676 KB |
Output is correct |
25 |
Correct |
10 ms |
14676 KB |
Output is correct |
26 |
Correct |
9 ms |
14676 KB |
Output is correct |
27 |
Correct |
8 ms |
14548 KB |
Output is correct |
28 |
Correct |
8 ms |
14676 KB |
Output is correct |
29 |
Correct |
9 ms |
14676 KB |
Output is correct |
30 |
Correct |
8 ms |
14596 KB |
Output is correct |
31 |
Correct |
8 ms |
14676 KB |
Output is correct |
32 |
Correct |
9 ms |
14704 KB |
Output is correct |
33 |
Correct |
8 ms |
14668 KB |
Output is correct |
34 |
Correct |
8 ms |
14664 KB |
Output is correct |
35 |
Correct |
8 ms |
14668 KB |
Output is correct |
36 |
Correct |
10 ms |
14536 KB |
Output is correct |
37 |
Correct |
8 ms |
14532 KB |
Output is correct |
38 |
Correct |
8 ms |
14548 KB |
Output is correct |
39 |
Correct |
121 ms |
36144 KB |
Output is correct |
40 |
Correct |
122 ms |
36172 KB |
Output is correct |
41 |
Correct |
133 ms |
35936 KB |
Output is correct |
42 |
Correct |
128 ms |
35452 KB |
Output is correct |
43 |
Correct |
156 ms |
48232 KB |
Output is correct |
44 |
Correct |
128 ms |
38944 KB |
Output is correct |
45 |
Correct |
109 ms |
36020 KB |
Output is correct |
46 |
Correct |
59 ms |
43468 KB |
Output is correct |
47 |
Correct |
188 ms |
46328 KB |
Output is correct |
48 |
Correct |
316 ms |
85480 KB |
Output is correct |
49 |
Correct |
342 ms |
83856 KB |
Output is correct |
50 |
Correct |
241 ms |
46308 KB |
Output is correct |
51 |
Correct |
200 ms |
46424 KB |
Output is correct |
52 |
Correct |
270 ms |
46404 KB |
Output is correct |
53 |
Correct |
241 ms |
51228 KB |
Output is correct |
54 |
Correct |
355 ms |
84116 KB |
Output is correct |
55 |
Correct |
20 ms |
17484 KB |
Output is correct |
56 |
Correct |
14 ms |
16212 KB |
Output is correct |
57 |
Correct |
76 ms |
33440 KB |
Output is correct |
58 |
Correct |
54 ms |
26768 KB |
Output is correct |
59 |
Correct |
123 ms |
49688 KB |
Output is correct |
60 |
Correct |
292 ms |
84220 KB |
Output is correct |
61 |
Correct |
261 ms |
49760 KB |
Output is correct |
62 |
Correct |
178 ms |
46380 KB |
Output is correct |
63 |
Correct |
257 ms |
46404 KB |
Output is correct |
64 |
Correct |
434 ms |
101492 KB |
Output is correct |
65 |
Correct |
422 ms |
99624 KB |
Output is correct |
66 |
Correct |
345 ms |
80276 KB |
Output is correct |
67 |
Correct |
169 ms |
40728 KB |
Output is correct |
68 |
Correct |
367 ms |
63348 KB |
Output is correct |
69 |
Correct |
383 ms |
68284 KB |
Output is correct |
70 |
Correct |
357 ms |
61268 KB |
Output is correct |