#include "race.h"
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
#define ll long long
#define mp make_pair
#define pub push_back
#define pob pop_back()
#define ss second
#define ff first
#define mt make_tuple
#define pof pop_front()
#define fbo find_by_order
#define ook order_of_key
typedef tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
int i,ans=1e9,c[200001],used[200001];
vector<pair<int,int> >v[200001];
map<int,int>xox,yoy;
inline void dfs(int u, int par){
for(auto x : v[u]) if(x.ff!=par) dfs(x.ff,u);
c[par]+=c[u];
}
inline void dfs1(int u, int parr, int s, int d){
if(yoy.find(s) == yoy.end())yoy[s]=d;
else yoy[s]=min(yoy[s],d);
for(auto x : v[u]){
if(x.ff!=parr && !used[x.ff]) dfs1(x.ff,u,s+x.ss,d+1);
}
}
inline int fnd(int u , int sz){
for(auto x : v[u]){
if(!used[x.ff] && c[x.ff]>sz){
c[u]-=c[x.ff];
c[x.ff]+=c[u];
return fnd(x.ff,sz);
}
}
return u;
}
inline void solve(int at, int k){
at=fnd(at,c[at]/2);
used[at]=1;
xox.clear();
xox[0]=0;
for(auto z : v[at]){
if(used[z.ff]) continue;
yoy.clear();
dfs1(z.ff,at,z.ss,1);
for(auto haha : yoy) if(xox.find(k-haha.ff)!=xox.end()) ans=min(ans,haha.ss+xox[k-haha.ff]);
for(auto lol : yoy){
if(xox.find(lol.ff)==xox.end()) xox[lol.ff]=lol.ss;
else xox[lol.ff]=min(xox[lol.ff],lol.ss);
}
}
for(auto hha : v[at]) if(!used[hha.ff]) solve(hha.ff,k);
}
int best_path(int N, int K, int H[][2], int L[]) {
for(i=0;i<N-1;i++){
c[i]=1;
v[H[i][0]].pub(mp(H[i][1],L[i]));
v[H[i][1]].pub(mp(H[i][0],L[i]));
}
c[N-1]=1;
dfs(0,0);
solve(0,K);
if(ans==1e9) ans=-1;
return ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
4992 KB |
Output is correct |
2 |
Correct |
7 ms |
5120 KB |
Output is correct |
3 |
Correct |
5 ms |
4992 KB |
Output is correct |
4 |
Correct |
7 ms |
5120 KB |
Output is correct |
5 |
Correct |
6 ms |
5092 KB |
Output is correct |
6 |
Correct |
7 ms |
5120 KB |
Output is correct |
7 |
Correct |
8 ms |
4992 KB |
Output is correct |
8 |
Correct |
6 ms |
4992 KB |
Output is correct |
9 |
Correct |
7 ms |
4992 KB |
Output is correct |
10 |
Correct |
6 ms |
4992 KB |
Output is correct |
11 |
Correct |
7 ms |
5032 KB |
Output is correct |
12 |
Correct |
7 ms |
5120 KB |
Output is correct |
13 |
Correct |
8 ms |
4992 KB |
Output is correct |
14 |
Correct |
7 ms |
5120 KB |
Output is correct |
15 |
Correct |
5 ms |
4992 KB |
Output is correct |
16 |
Correct |
9 ms |
5120 KB |
Output is correct |
17 |
Correct |
7 ms |
4992 KB |
Output is correct |
18 |
Correct |
8 ms |
5120 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
4992 KB |
Output is correct |
2 |
Correct |
7 ms |
5120 KB |
Output is correct |
3 |
Correct |
5 ms |
4992 KB |
Output is correct |
4 |
Correct |
7 ms |
5120 KB |
Output is correct |
5 |
Correct |
6 ms |
5092 KB |
Output is correct |
6 |
Correct |
7 ms |
5120 KB |
Output is correct |
7 |
Correct |
8 ms |
4992 KB |
Output is correct |
8 |
Correct |
6 ms |
4992 KB |
Output is correct |
9 |
Correct |
7 ms |
4992 KB |
Output is correct |
10 |
Correct |
6 ms |
4992 KB |
Output is correct |
11 |
Correct |
7 ms |
5032 KB |
Output is correct |
12 |
Correct |
7 ms |
5120 KB |
Output is correct |
13 |
Correct |
8 ms |
4992 KB |
Output is correct |
14 |
Correct |
7 ms |
5120 KB |
Output is correct |
15 |
Correct |
5 ms |
4992 KB |
Output is correct |
16 |
Correct |
9 ms |
5120 KB |
Output is correct |
17 |
Correct |
7 ms |
4992 KB |
Output is correct |
18 |
Correct |
8 ms |
5120 KB |
Output is correct |
19 |
Correct |
8 ms |
5120 KB |
Output is correct |
20 |
Correct |
7 ms |
5092 KB |
Output is correct |
21 |
Correct |
11 ms |
5164 KB |
Output is correct |
22 |
Correct |
11 ms |
5120 KB |
Output is correct |
23 |
Correct |
5 ms |
5248 KB |
Output is correct |
24 |
Correct |
10 ms |
5248 KB |
Output is correct |
25 |
Correct |
10 ms |
5248 KB |
Output is correct |
26 |
Correct |
9 ms |
5248 KB |
Output is correct |
27 |
Correct |
10 ms |
5084 KB |
Output is correct |
28 |
Correct |
10 ms |
5248 KB |
Output is correct |
29 |
Correct |
11 ms |
5376 KB |
Output is correct |
30 |
Correct |
9 ms |
5248 KB |
Output is correct |
31 |
Correct |
12 ms |
5248 KB |
Output is correct |
32 |
Correct |
11 ms |
5248 KB |
Output is correct |
33 |
Correct |
11 ms |
5248 KB |
Output is correct |
34 |
Correct |
11 ms |
5248 KB |
Output is correct |
35 |
Correct |
9 ms |
5120 KB |
Output is correct |
36 |
Correct |
12 ms |
5248 KB |
Output is correct |
37 |
Correct |
10 ms |
5120 KB |
Output is correct |
38 |
Correct |
10 ms |
5248 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
4992 KB |
Output is correct |
2 |
Correct |
7 ms |
5120 KB |
Output is correct |
3 |
Correct |
5 ms |
4992 KB |
Output is correct |
4 |
Correct |
7 ms |
5120 KB |
Output is correct |
5 |
Correct |
6 ms |
5092 KB |
Output is correct |
6 |
Correct |
7 ms |
5120 KB |
Output is correct |
7 |
Correct |
8 ms |
4992 KB |
Output is correct |
8 |
Correct |
6 ms |
4992 KB |
Output is correct |
9 |
Correct |
7 ms |
4992 KB |
Output is correct |
10 |
Correct |
6 ms |
4992 KB |
Output is correct |
11 |
Correct |
7 ms |
5032 KB |
Output is correct |
12 |
Correct |
7 ms |
5120 KB |
Output is correct |
13 |
Correct |
8 ms |
4992 KB |
Output is correct |
14 |
Correct |
7 ms |
5120 KB |
Output is correct |
15 |
Correct |
5 ms |
4992 KB |
Output is correct |
16 |
Correct |
9 ms |
5120 KB |
Output is correct |
17 |
Correct |
7 ms |
4992 KB |
Output is correct |
18 |
Correct |
8 ms |
5120 KB |
Output is correct |
19 |
Correct |
477 ms |
10700 KB |
Output is correct |
20 |
Correct |
533 ms |
12124 KB |
Output is correct |
21 |
Correct |
498 ms |
12152 KB |
Output is correct |
22 |
Correct |
412 ms |
12280 KB |
Output is correct |
23 |
Correct |
619 ms |
12576 KB |
Output is correct |
24 |
Correct |
283 ms |
12316 KB |
Output is correct |
25 |
Correct |
407 ms |
15116 KB |
Output is correct |
26 |
Correct |
119 ms |
17024 KB |
Output is correct |
27 |
Correct |
532 ms |
19548 KB |
Output is correct |
28 |
Correct |
2245 ms |
47964 KB |
Output is correct |
29 |
Correct |
2562 ms |
46516 KB |
Output is correct |
30 |
Correct |
555 ms |
19696 KB |
Output is correct |
31 |
Correct |
641 ms |
19892 KB |
Output is correct |
32 |
Correct |
818 ms |
20028 KB |
Output is correct |
33 |
Correct |
1191 ms |
18608 KB |
Output is correct |
34 |
Correct |
2402 ms |
37956 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
4992 KB |
Output is correct |
2 |
Correct |
7 ms |
5120 KB |
Output is correct |
3 |
Correct |
5 ms |
4992 KB |
Output is correct |
4 |
Correct |
7 ms |
5120 KB |
Output is correct |
5 |
Correct |
6 ms |
5092 KB |
Output is correct |
6 |
Correct |
7 ms |
5120 KB |
Output is correct |
7 |
Correct |
8 ms |
4992 KB |
Output is correct |
8 |
Correct |
6 ms |
4992 KB |
Output is correct |
9 |
Correct |
7 ms |
4992 KB |
Output is correct |
10 |
Correct |
6 ms |
4992 KB |
Output is correct |
11 |
Correct |
7 ms |
5032 KB |
Output is correct |
12 |
Correct |
7 ms |
5120 KB |
Output is correct |
13 |
Correct |
8 ms |
4992 KB |
Output is correct |
14 |
Correct |
7 ms |
5120 KB |
Output is correct |
15 |
Correct |
5 ms |
4992 KB |
Output is correct |
16 |
Correct |
9 ms |
5120 KB |
Output is correct |
17 |
Correct |
7 ms |
4992 KB |
Output is correct |
18 |
Correct |
8 ms |
5120 KB |
Output is correct |
19 |
Correct |
8 ms |
5120 KB |
Output is correct |
20 |
Correct |
7 ms |
5092 KB |
Output is correct |
21 |
Correct |
11 ms |
5164 KB |
Output is correct |
22 |
Correct |
11 ms |
5120 KB |
Output is correct |
23 |
Correct |
5 ms |
5248 KB |
Output is correct |
24 |
Correct |
10 ms |
5248 KB |
Output is correct |
25 |
Correct |
10 ms |
5248 KB |
Output is correct |
26 |
Correct |
9 ms |
5248 KB |
Output is correct |
27 |
Correct |
10 ms |
5084 KB |
Output is correct |
28 |
Correct |
10 ms |
5248 KB |
Output is correct |
29 |
Correct |
11 ms |
5376 KB |
Output is correct |
30 |
Correct |
9 ms |
5248 KB |
Output is correct |
31 |
Correct |
12 ms |
5248 KB |
Output is correct |
32 |
Correct |
11 ms |
5248 KB |
Output is correct |
33 |
Correct |
11 ms |
5248 KB |
Output is correct |
34 |
Correct |
11 ms |
5248 KB |
Output is correct |
35 |
Correct |
9 ms |
5120 KB |
Output is correct |
36 |
Correct |
12 ms |
5248 KB |
Output is correct |
37 |
Correct |
10 ms |
5120 KB |
Output is correct |
38 |
Correct |
10 ms |
5248 KB |
Output is correct |
39 |
Correct |
477 ms |
10700 KB |
Output is correct |
40 |
Correct |
533 ms |
12124 KB |
Output is correct |
41 |
Correct |
498 ms |
12152 KB |
Output is correct |
42 |
Correct |
412 ms |
12280 KB |
Output is correct |
43 |
Correct |
619 ms |
12576 KB |
Output is correct |
44 |
Correct |
283 ms |
12316 KB |
Output is correct |
45 |
Correct |
407 ms |
15116 KB |
Output is correct |
46 |
Correct |
119 ms |
17024 KB |
Output is correct |
47 |
Correct |
532 ms |
19548 KB |
Output is correct |
48 |
Correct |
2245 ms |
47964 KB |
Output is correct |
49 |
Correct |
2562 ms |
46516 KB |
Output is correct |
50 |
Correct |
555 ms |
19696 KB |
Output is correct |
51 |
Correct |
641 ms |
19892 KB |
Output is correct |
52 |
Correct |
818 ms |
20028 KB |
Output is correct |
53 |
Correct |
1191 ms |
18608 KB |
Output is correct |
54 |
Correct |
2402 ms |
37956 KB |
Output is correct |
55 |
Correct |
48 ms |
6264 KB |
Output is correct |
56 |
Correct |
29 ms |
5760 KB |
Output is correct |
57 |
Correct |
208 ms |
12280 KB |
Output is correct |
58 |
Correct |
106 ms |
12012 KB |
Output is correct |
59 |
Correct |
713 ms |
26488 KB |
Output is correct |
60 |
Correct |
2730 ms |
46888 KB |
Output is correct |
61 |
Correct |
703 ms |
21124 KB |
Output is correct |
62 |
Correct |
635 ms |
19720 KB |
Output is correct |
63 |
Correct |
832 ms |
19968 KB |
Output is correct |
64 |
Correct |
2397 ms |
29304 KB |
Output is correct |
65 |
Correct |
2415 ms |
39044 KB |
Output is correct |
66 |
Correct |
2365 ms |
43516 KB |
Output is correct |
67 |
Correct |
397 ms |
20324 KB |
Output is correct |
68 |
Correct |
1508 ms |
36088 KB |
Output is correct |
69 |
Correct |
1637 ms |
36488 KB |
Output is correct |
70 |
Correct |
1519 ms |
34808 KB |
Output is correct |