#include "race.h"
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;
const ll inf = 1e18;
ll k;
vector<set<pair<ll, int>>> s;
vector<vector<pair<int, ll>>> v;
ll ans = 1e18;
void dfs(int nd, int ss, ll dis, int depth){
for(auto [x, w]: v[nd]) if(x != ss) dfs(x, nd, dis+w, depth+1);
int mx = -1, in = -1;
for(auto [x, w]: v[nd]) if(x != ss){
if((int)s[x].size() > mx){
mx = s[x].size();
in = x;
}
}
if(in != -1) swap(s[nd], s[in]);
auto it = s[nd].lower_bound(make_pair(k+dis, 0));
if(it != s[nd].end() && it->f == k+dis) ans = min(ans, (ll)it->sc - depth);
for(auto [x, w]: v[nd]) if(x != ss){
for(auto [d, dpt]: s[x]){
dpt-=depth;
d-=dis;
ll dd = k-d;
if(dd == 0){
ans = min(ans, (ll)dpt);
}
else{
auto it = s[nd].lower_bound(make_pair(dd+dis, 0));
if(it != s[nd].end() && it->f == dd+dis){
ans = min(ans, dpt+(ll)(it->sc)-depth);
}
}
}
for(auto p: s[x]) s[nd].insert(p);
s[x].clear();
}
s[nd].insert({dis, depth});
}
int best_path(int n, int k, int edges[][2], int w[]){
::k = k;
v.resize(n);
s.resize(n);
for(int i = 0; i < n-1; i++){
v[edges[i][0]].pb({edges[i][1], w[i]});
v[edges[i][1]].pb({edges[i][0], w[i]});
}
dfs(0, -1, 0LL, 0);
if(ans == inf) ans = -1;
return ans;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
1 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
304 KB |
Output is correct |
| 15 |
Correct |
1 ms |
304 KB |
Output is correct |
| 16 |
Correct |
1 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
300 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
1 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
304 KB |
Output is correct |
| 15 |
Correct |
1 ms |
304 KB |
Output is correct |
| 16 |
Correct |
1 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
300 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| 21 |
Correct |
2 ms |
460 KB |
Output is correct |
| 22 |
Correct |
2 ms |
464 KB |
Output is correct |
| 23 |
Correct |
2 ms |
460 KB |
Output is correct |
| 24 |
Correct |
2 ms |
444 KB |
Output is correct |
| 25 |
Correct |
2 ms |
460 KB |
Output is correct |
| 26 |
Correct |
2 ms |
460 KB |
Output is correct |
| 27 |
Correct |
1 ms |
460 KB |
Output is correct |
| 28 |
Correct |
2 ms |
460 KB |
Output is correct |
| 29 |
Correct |
2 ms |
460 KB |
Output is correct |
| 30 |
Correct |
2 ms |
496 KB |
Output is correct |
| 31 |
Correct |
2 ms |
464 KB |
Output is correct |
| 32 |
Correct |
2 ms |
460 KB |
Output is correct |
| 33 |
Correct |
2 ms |
460 KB |
Output is correct |
| 34 |
Correct |
2 ms |
460 KB |
Output is correct |
| 35 |
Correct |
1 ms |
460 KB |
Output is correct |
| 36 |
Correct |
1 ms |
440 KB |
Output is correct |
| 37 |
Correct |
1 ms |
460 KB |
Output is correct |
| 38 |
Correct |
2 ms |
464 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
1 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
304 KB |
Output is correct |
| 15 |
Correct |
1 ms |
304 KB |
Output is correct |
| 16 |
Correct |
1 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
300 KB |
Output is correct |
| 19 |
Correct |
130 ms |
15504 KB |
Output is correct |
| 20 |
Correct |
132 ms |
15580 KB |
Output is correct |
| 21 |
Correct |
119 ms |
15368 KB |
Output is correct |
| 22 |
Correct |
130 ms |
15420 KB |
Output is correct |
| 23 |
Correct |
149 ms |
16076 KB |
Output is correct |
| 24 |
Correct |
113 ms |
15044 KB |
Output is correct |
| 25 |
Correct |
130 ms |
32812 KB |
Output is correct |
| 26 |
Correct |
89 ms |
38048 KB |
Output is correct |
| 27 |
Correct |
219 ms |
36768 KB |
Output is correct |
| 28 |
Correct |
262 ms |
76116 KB |
Output is correct |
| 29 |
Correct |
267 ms |
74436 KB |
Output is correct |
| 30 |
Correct |
219 ms |
36880 KB |
Output is correct |
| 31 |
Correct |
219 ms |
36824 KB |
Output is correct |
| 32 |
Correct |
257 ms |
36856 KB |
Output is correct |
| 33 |
Correct |
222 ms |
29896 KB |
Output is correct |
| 34 |
Correct |
342 ms |
43348 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
1 ms |
332 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
304 KB |
Output is correct |
| 15 |
Correct |
1 ms |
304 KB |
Output is correct |
| 16 |
Correct |
1 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
300 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| 21 |
Correct |
2 ms |
460 KB |
Output is correct |
| 22 |
Correct |
2 ms |
464 KB |
Output is correct |
| 23 |
Correct |
2 ms |
460 KB |
Output is correct |
| 24 |
Correct |
2 ms |
444 KB |
Output is correct |
| 25 |
Correct |
2 ms |
460 KB |
Output is correct |
| 26 |
Correct |
2 ms |
460 KB |
Output is correct |
| 27 |
Correct |
1 ms |
460 KB |
Output is correct |
| 28 |
Correct |
2 ms |
460 KB |
Output is correct |
| 29 |
Correct |
2 ms |
460 KB |
Output is correct |
| 30 |
Correct |
2 ms |
496 KB |
Output is correct |
| 31 |
Correct |
2 ms |
464 KB |
Output is correct |
| 32 |
Correct |
2 ms |
460 KB |
Output is correct |
| 33 |
Correct |
2 ms |
460 KB |
Output is correct |
| 34 |
Correct |
2 ms |
460 KB |
Output is correct |
| 35 |
Correct |
1 ms |
460 KB |
Output is correct |
| 36 |
Correct |
1 ms |
440 KB |
Output is correct |
| 37 |
Correct |
1 ms |
460 KB |
Output is correct |
| 38 |
Correct |
2 ms |
464 KB |
Output is correct |
| 39 |
Correct |
130 ms |
15504 KB |
Output is correct |
| 40 |
Correct |
132 ms |
15580 KB |
Output is correct |
| 41 |
Correct |
119 ms |
15368 KB |
Output is correct |
| 42 |
Correct |
130 ms |
15420 KB |
Output is correct |
| 43 |
Correct |
149 ms |
16076 KB |
Output is correct |
| 44 |
Correct |
113 ms |
15044 KB |
Output is correct |
| 45 |
Correct |
130 ms |
32812 KB |
Output is correct |
| 46 |
Correct |
89 ms |
38048 KB |
Output is correct |
| 47 |
Correct |
219 ms |
36768 KB |
Output is correct |
| 48 |
Correct |
262 ms |
76116 KB |
Output is correct |
| 49 |
Correct |
267 ms |
74436 KB |
Output is correct |
| 50 |
Correct |
219 ms |
36880 KB |
Output is correct |
| 51 |
Correct |
219 ms |
36824 KB |
Output is correct |
| 52 |
Correct |
257 ms |
36856 KB |
Output is correct |
| 53 |
Correct |
222 ms |
29896 KB |
Output is correct |
| 54 |
Correct |
342 ms |
43348 KB |
Output is correct |
| 55 |
Correct |
13 ms |
2380 KB |
Output is correct |
| 56 |
Correct |
9 ms |
1832 KB |
Output is correct |
| 57 |
Correct |
69 ms |
15300 KB |
Output is correct |
| 58 |
Correct |
61 ms |
20520 KB |
Output is correct |
| 59 |
Correct |
98 ms |
37960 KB |
Output is correct |
| 60 |
Correct |
291 ms |
74900 KB |
Output is correct |
| 61 |
Correct |
241 ms |
38696 KB |
Output is correct |
| 62 |
Correct |
210 ms |
36848 KB |
Output is correct |
| 63 |
Correct |
249 ms |
36868 KB |
Output is correct |
| 64 |
Correct |
419 ms |
42436 KB |
Output is correct |
| 65 |
Correct |
494 ms |
44212 KB |
Output is correct |
| 66 |
Correct |
281 ms |
71036 KB |
Output is correct |
| 67 |
Correct |
220 ms |
42052 KB |
Output is correct |
| 68 |
Correct |
330 ms |
42716 KB |
Output is correct |
| 69 |
Correct |
325 ms |
42948 KB |
Output is correct |
| 70 |
Correct |
306 ms |
40636 KB |
Output is correct |
