#include "race.h"
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define re first
#define im second
#define mp make_pair
#define pb push_back
#define LL_MAX LONG_LONG_MAX
#define LL_MIN LONG_LONG_MIN
#define speed ios_base::sync_with_stdio(false); cin.tie(0)
#define stMx(a,b) a = max(a,b)
#define stMn(a,b) a = min(a,b)
typedef pair<int,int> ii;
typedef vector<int> vi;
typedef set<int> si;
typedef vector<ii> vii;
typedef set<ii> sii;
#define REP(i, a, b) for(int i = a; i < b; i++)
#define MAXN 200069
#define INF 314159265358979323
int ans=INF,k;
vii adj[MAXN];
int lazy_dist[MAXN], lazy_highways[MAXN];
map<int,int> min_dist[MAXN];
void dfs(int x, int p) {
min_dist[x][0]=0;
for(auto i: adj[x]) if(i.re!=p) {
dfs(i.re, x);
lazy_dist[i.re]+=i.im;
lazy_highways[i.re]++;
if(min_dist[i.re].size()>min_dist[x].size()) {
swap(min_dist[i.re], min_dist[x]);
swap(lazy_dist[i.re], lazy_dist[x]);
swap(lazy_highways[i.re], lazy_highways[x]);
}
for(auto it: min_dist[i.re]) {
int rem=k-it.re-lazy_dist[i.re]-lazy_dist[x];
if(min_dist[x].count(rem)) ans=min(ans, it.im+min_dist[x][rem]+lazy_highways[i.re]+lazy_highways[x]);
}
for(auto it: min_dist[i.re]) {
int insPt=it.re+lazy_dist[i.re]-lazy_dist[x], insV=it.im+lazy_highways[i.re]-lazy_highways[x];
if(min_dist[x].count(insPt)) min_dist[x][insPt]=min(min_dist[x][insPt],insV);
else min_dist[x][insPt]=insV;
}
}
}
int32_t best_path(int32_t N, int32_t K, int32_t H[][2], int32_t L[]) {
REP(i,0,N-1) {
adj[H[i][0]].pb(ii(H[i][1],L[i]));
adj[H[i][1]].pb(ii(H[i][0],L[i]));
}
k=K;
dfs(0,-1);
return ((ans==INF)?-1:ans);
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 2 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 3 |
Correct |
7 ms |
14416 KB |
Output is correct |
| 4 |
Correct |
6 ms |
14384 KB |
Output is correct |
| 5 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 6 |
Correct |
9 ms |
14420 KB |
Output is correct |
| 7 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 8 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 9 |
Correct |
8 ms |
14360 KB |
Output is correct |
| 10 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 11 |
Correct |
7 ms |
14424 KB |
Output is correct |
| 12 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 13 |
Correct |
8 ms |
14372 KB |
Output is correct |
| 14 |
Correct |
6 ms |
14408 KB |
Output is correct |
| 15 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 16 |
Correct |
7 ms |
14340 KB |
Output is correct |
| 17 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 18 |
Correct |
7 ms |
14328 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 2 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 3 |
Correct |
7 ms |
14416 KB |
Output is correct |
| 4 |
Correct |
6 ms |
14384 KB |
Output is correct |
| 5 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 6 |
Correct |
9 ms |
14420 KB |
Output is correct |
| 7 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 8 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 9 |
Correct |
8 ms |
14360 KB |
Output is correct |
| 10 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 11 |
Correct |
7 ms |
14424 KB |
Output is correct |
| 12 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 13 |
Correct |
8 ms |
14372 KB |
Output is correct |
| 14 |
Correct |
6 ms |
14408 KB |
Output is correct |
| 15 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 16 |
Correct |
7 ms |
14340 KB |
Output is correct |
| 17 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 18 |
Correct |
7 ms |
14328 KB |
Output is correct |
| 19 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 20 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 21 |
Correct |
7 ms |
14676 KB |
Output is correct |
| 22 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 23 |
Correct |
8 ms |
14672 KB |
Output is correct |
| 24 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 25 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 26 |
Correct |
9 ms |
14676 KB |
Output is correct |
| 27 |
Correct |
7 ms |
14548 KB |
Output is correct |
| 28 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 29 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 30 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 31 |
Correct |
9 ms |
14676 KB |
Output is correct |
| 32 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 33 |
Correct |
8 ms |
14668 KB |
Output is correct |
| 34 |
Correct |
9 ms |
14676 KB |
Output is correct |
| 35 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 36 |
Correct |
7 ms |
14672 KB |
Output is correct |
| 37 |
Correct |
9 ms |
14676 KB |
Output is correct |
| 38 |
Correct |
9 ms |
14680 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 2 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 3 |
Correct |
7 ms |
14416 KB |
Output is correct |
| 4 |
Correct |
6 ms |
14384 KB |
Output is correct |
| 5 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 6 |
Correct |
9 ms |
14420 KB |
Output is correct |
| 7 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 8 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 9 |
Correct |
8 ms |
14360 KB |
Output is correct |
| 10 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 11 |
Correct |
7 ms |
14424 KB |
Output is correct |
| 12 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 13 |
Correct |
8 ms |
14372 KB |
Output is correct |
| 14 |
Correct |
6 ms |
14408 KB |
Output is correct |
| 15 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 16 |
Correct |
7 ms |
14340 KB |
Output is correct |
| 17 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 18 |
Correct |
7 ms |
14328 KB |
Output is correct |
| 19 |
Correct |
100 ms |
39172 KB |
Output is correct |
| 20 |
Correct |
100 ms |
39196 KB |
Output is correct |
| 21 |
Correct |
107 ms |
38904 KB |
Output is correct |
| 22 |
Correct |
101 ms |
38464 KB |
Output is correct |
| 23 |
Correct |
148 ms |
51472 KB |
Output is correct |
| 24 |
Correct |
103 ms |
41364 KB |
Output is correct |
| 25 |
Correct |
89 ms |
38276 KB |
Output is correct |
| 26 |
Correct |
50 ms |
45004 KB |
Output is correct |
| 27 |
Correct |
152 ms |
52596 KB |
Output is correct |
| 28 |
Correct |
236 ms |
88416 KB |
Output is correct |
| 29 |
Correct |
236 ms |
87064 KB |
Output is correct |
| 30 |
Correct |
154 ms |
52592 KB |
Output is correct |
| 31 |
Correct |
168 ms |
52548 KB |
Output is correct |
| 32 |
Correct |
211 ms |
52624 KB |
Output is correct |
| 33 |
Correct |
215 ms |
57356 KB |
Output is correct |
| 34 |
Correct |
298 ms |
89348 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 2 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 3 |
Correct |
7 ms |
14416 KB |
Output is correct |
| 4 |
Correct |
6 ms |
14384 KB |
Output is correct |
| 5 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 6 |
Correct |
9 ms |
14420 KB |
Output is correct |
| 7 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 8 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 9 |
Correct |
8 ms |
14360 KB |
Output is correct |
| 10 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 11 |
Correct |
7 ms |
14424 KB |
Output is correct |
| 12 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 13 |
Correct |
8 ms |
14372 KB |
Output is correct |
| 14 |
Correct |
6 ms |
14408 KB |
Output is correct |
| 15 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 16 |
Correct |
7 ms |
14340 KB |
Output is correct |
| 17 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 18 |
Correct |
7 ms |
14328 KB |
Output is correct |
| 19 |
Correct |
7 ms |
14420 KB |
Output is correct |
| 20 |
Correct |
6 ms |
14420 KB |
Output is correct |
| 21 |
Correct |
7 ms |
14676 KB |
Output is correct |
| 22 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 23 |
Correct |
8 ms |
14672 KB |
Output is correct |
| 24 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 25 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 26 |
Correct |
9 ms |
14676 KB |
Output is correct |
| 27 |
Correct |
7 ms |
14548 KB |
Output is correct |
| 28 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 29 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 30 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 31 |
Correct |
9 ms |
14676 KB |
Output is correct |
| 32 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 33 |
Correct |
8 ms |
14668 KB |
Output is correct |
| 34 |
Correct |
9 ms |
14676 KB |
Output is correct |
| 35 |
Correct |
8 ms |
14676 KB |
Output is correct |
| 36 |
Correct |
7 ms |
14672 KB |
Output is correct |
| 37 |
Correct |
9 ms |
14676 KB |
Output is correct |
| 38 |
Correct |
9 ms |
14680 KB |
Output is correct |
| 39 |
Correct |
100 ms |
39172 KB |
Output is correct |
| 40 |
Correct |
100 ms |
39196 KB |
Output is correct |
| 41 |
Correct |
107 ms |
38904 KB |
Output is correct |
| 42 |
Correct |
101 ms |
38464 KB |
Output is correct |
| 43 |
Correct |
148 ms |
51472 KB |
Output is correct |
| 44 |
Correct |
103 ms |
41364 KB |
Output is correct |
| 45 |
Correct |
89 ms |
38276 KB |
Output is correct |
| 46 |
Correct |
50 ms |
45004 KB |
Output is correct |
| 47 |
Correct |
152 ms |
52596 KB |
Output is correct |
| 48 |
Correct |
236 ms |
88416 KB |
Output is correct |
| 49 |
Correct |
236 ms |
87064 KB |
Output is correct |
| 50 |
Correct |
154 ms |
52592 KB |
Output is correct |
| 51 |
Correct |
168 ms |
52548 KB |
Output is correct |
| 52 |
Correct |
211 ms |
52624 KB |
Output is correct |
| 53 |
Correct |
215 ms |
57356 KB |
Output is correct |
| 54 |
Correct |
298 ms |
89348 KB |
Output is correct |
| 55 |
Correct |
18 ms |
17876 KB |
Output is correct |
| 56 |
Correct |
12 ms |
16508 KB |
Output is correct |
| 57 |
Correct |
67 ms |
36696 KB |
Output is correct |
| 58 |
Correct |
55 ms |
29060 KB |
Output is correct |
| 59 |
Correct |
79 ms |
51300 KB |
Output is correct |
| 60 |
Correct |
256 ms |
87508 KB |
Output is correct |
| 61 |
Correct |
217 ms |
56024 KB |
Output is correct |
| 62 |
Correct |
157 ms |
52608 KB |
Output is correct |
| 63 |
Correct |
209 ms |
52608 KB |
Output is correct |
| 64 |
Correct |
393 ms |
106956 KB |
Output is correct |
| 65 |
Correct |
378 ms |
104664 KB |
Output is correct |
| 66 |
Correct |
283 ms |
83868 KB |
Output is correct |
| 67 |
Correct |
164 ms |
44992 KB |
Output is correct |
| 68 |
Correct |
295 ms |
68336 KB |
Output is correct |
| 69 |
Correct |
339 ms |
73072 KB |
Output is correct |
| 70 |
Correct |
291 ms |
66068 KB |
Output is correct |
