#include <bits/stdc++.h>
#define MAX 205000
typedef std::pair<int,int> pii;
int NA,KA;
std::vector<pii> con[MAX];
std::map<int,long long> mapa[MAX];
int prof[MAX];
int distancia[MAX];
long long count=1e6;
void merge(int a,int b) {
if(mapa[a].size()<mapa[b].size())std::swap(mapa[a],mapa[b]);
for(auto&x:mapa[b]){
{
auto it = mapa[a].find((KA-(x.first-distancia[a]))+distancia[a]);
if(it!=mapa[a].end())count=std::min(count,it->second+x.second-(2*prof[a]));
}
}
for(auto&x:mapa[b]){
auto it = mapa[a].find(x.first);
if(it==mapa[a].end())
mapa[a][x.first]=x.second;
else mapa[a][x.first]=std::min(x.second,mapa[a][x.first]);
}
}
void dfs(int pos,int prev,int dist,int depth=0) {
mapa[pos][dist]=depth;
prof[pos]=depth;
distancia[pos]=dist;
for(auto&x:con[pos]){
if(prev==x.first)continue;
dfs(x.first,pos,dist+x.second,depth+1);
merge(pos,x.first);
}
}
int best_path(int N, int K, int H[][2], int L[])
{
for(auto&x:mapa)x.clear();
for(auto&x:con)x.clear();
NA=N;KA=K;
for(int i=0;i!=N-1;++i){
int a,b,c;
a=H[i][0],b=H[i][1],c=L[i];
con[a].push_back({b,c});
con[b].push_back({a,c});
}
dfs(0,-1,0);
if(count==1e6)count=-1;
return count;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
14708 KB |
Output is correct |
| 2 |
Correct |
11 ms |
14772 KB |
Output is correct |
| 3 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 4 |
Correct |
12 ms |
14668 KB |
Output is correct |
| 5 |
Correct |
11 ms |
14704 KB |
Output is correct |
| 6 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 7 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 8 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 9 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 10 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 11 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 12 |
Correct |
11 ms |
14760 KB |
Output is correct |
| 13 |
Correct |
11 ms |
14664 KB |
Output is correct |
| 14 |
Correct |
11 ms |
14716 KB |
Output is correct |
| 15 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 16 |
Correct |
11 ms |
14712 KB |
Output is correct |
| 17 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 18 |
Correct |
11 ms |
14668 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
14708 KB |
Output is correct |
| 2 |
Correct |
11 ms |
14772 KB |
Output is correct |
| 3 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 4 |
Correct |
12 ms |
14668 KB |
Output is correct |
| 5 |
Correct |
11 ms |
14704 KB |
Output is correct |
| 6 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 7 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 8 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 9 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 10 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 11 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 12 |
Correct |
11 ms |
14760 KB |
Output is correct |
| 13 |
Correct |
11 ms |
14664 KB |
Output is correct |
| 14 |
Correct |
11 ms |
14716 KB |
Output is correct |
| 15 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 16 |
Correct |
11 ms |
14712 KB |
Output is correct |
| 17 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 18 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 19 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 20 |
Correct |
10 ms |
14740 KB |
Output is correct |
| 21 |
Correct |
12 ms |
15012 KB |
Output is correct |
| 22 |
Correct |
12 ms |
15052 KB |
Output is correct |
| 23 |
Correct |
12 ms |
15052 KB |
Output is correct |
| 24 |
Correct |
12 ms |
14976 KB |
Output is correct |
| 25 |
Correct |
13 ms |
15052 KB |
Output is correct |
| 26 |
Correct |
12 ms |
15052 KB |
Output is correct |
| 27 |
Correct |
12 ms |
14924 KB |
Output is correct |
| 28 |
Correct |
13 ms |
14980 KB |
Output is correct |
| 29 |
Correct |
13 ms |
15072 KB |
Output is correct |
| 30 |
Correct |
14 ms |
14988 KB |
Output is correct |
| 31 |
Correct |
13 ms |
15040 KB |
Output is correct |
| 32 |
Correct |
13 ms |
15060 KB |
Output is correct |
| 33 |
Correct |
13 ms |
15068 KB |
Output is correct |
| 34 |
Correct |
13 ms |
14924 KB |
Output is correct |
| 35 |
Correct |
13 ms |
14924 KB |
Output is correct |
| 36 |
Correct |
12 ms |
14924 KB |
Output is correct |
| 37 |
Correct |
12 ms |
14872 KB |
Output is correct |
| 38 |
Correct |
12 ms |
14924 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
14708 KB |
Output is correct |
| 2 |
Correct |
11 ms |
14772 KB |
Output is correct |
| 3 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 4 |
Correct |
12 ms |
14668 KB |
Output is correct |
| 5 |
Correct |
11 ms |
14704 KB |
Output is correct |
| 6 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 7 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 8 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 9 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 10 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 11 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 12 |
Correct |
11 ms |
14760 KB |
Output is correct |
| 13 |
Correct |
11 ms |
14664 KB |
Output is correct |
| 14 |
Correct |
11 ms |
14716 KB |
Output is correct |
| 15 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 16 |
Correct |
11 ms |
14712 KB |
Output is correct |
| 17 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 18 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 19 |
Correct |
140 ms |
35880 KB |
Output is correct |
| 20 |
Correct |
141 ms |
37208 KB |
Output is correct |
| 21 |
Correct |
151 ms |
36996 KB |
Output is correct |
| 22 |
Correct |
150 ms |
36760 KB |
Output is correct |
| 23 |
Correct |
195 ms |
49312 KB |
Output is correct |
| 24 |
Correct |
150 ms |
40000 KB |
Output is correct |
| 25 |
Correct |
117 ms |
32288 KB |
Output is correct |
| 26 |
Correct |
72 ms |
35324 KB |
Output is correct |
| 27 |
Correct |
225 ms |
48068 KB |
Output is correct |
| 28 |
Correct |
325 ms |
68588 KB |
Output is correct |
| 29 |
Correct |
369 ms |
68408 KB |
Output is correct |
| 30 |
Correct |
230 ms |
48068 KB |
Output is correct |
| 31 |
Correct |
236 ms |
48272 KB |
Output is correct |
| 32 |
Correct |
307 ms |
48276 KB |
Output is correct |
| 33 |
Correct |
272 ms |
52804 KB |
Output is correct |
| 34 |
Correct |
393 ms |
85852 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
14708 KB |
Output is correct |
| 2 |
Correct |
11 ms |
14772 KB |
Output is correct |
| 3 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 4 |
Correct |
12 ms |
14668 KB |
Output is correct |
| 5 |
Correct |
11 ms |
14704 KB |
Output is correct |
| 6 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 7 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 8 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 9 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 10 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 11 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 12 |
Correct |
11 ms |
14760 KB |
Output is correct |
| 13 |
Correct |
11 ms |
14664 KB |
Output is correct |
| 14 |
Correct |
11 ms |
14716 KB |
Output is correct |
| 15 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 16 |
Correct |
11 ms |
14712 KB |
Output is correct |
| 17 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 18 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 19 |
Correct |
11 ms |
14668 KB |
Output is correct |
| 20 |
Correct |
10 ms |
14740 KB |
Output is correct |
| 21 |
Correct |
12 ms |
15012 KB |
Output is correct |
| 22 |
Correct |
12 ms |
15052 KB |
Output is correct |
| 23 |
Correct |
12 ms |
15052 KB |
Output is correct |
| 24 |
Correct |
12 ms |
14976 KB |
Output is correct |
| 25 |
Correct |
13 ms |
15052 KB |
Output is correct |
| 26 |
Correct |
12 ms |
15052 KB |
Output is correct |
| 27 |
Correct |
12 ms |
14924 KB |
Output is correct |
| 28 |
Correct |
13 ms |
14980 KB |
Output is correct |
| 29 |
Correct |
13 ms |
15072 KB |
Output is correct |
| 30 |
Correct |
14 ms |
14988 KB |
Output is correct |
| 31 |
Correct |
13 ms |
15040 KB |
Output is correct |
| 32 |
Correct |
13 ms |
15060 KB |
Output is correct |
| 33 |
Correct |
13 ms |
15068 KB |
Output is correct |
| 34 |
Correct |
13 ms |
14924 KB |
Output is correct |
| 35 |
Correct |
13 ms |
14924 KB |
Output is correct |
| 36 |
Correct |
12 ms |
14924 KB |
Output is correct |
| 37 |
Correct |
12 ms |
14872 KB |
Output is correct |
| 38 |
Correct |
12 ms |
14924 KB |
Output is correct |
| 39 |
Correct |
140 ms |
35880 KB |
Output is correct |
| 40 |
Correct |
141 ms |
37208 KB |
Output is correct |
| 41 |
Correct |
151 ms |
36996 KB |
Output is correct |
| 42 |
Correct |
150 ms |
36760 KB |
Output is correct |
| 43 |
Correct |
195 ms |
49312 KB |
Output is correct |
| 44 |
Correct |
150 ms |
40000 KB |
Output is correct |
| 45 |
Correct |
117 ms |
32288 KB |
Output is correct |
| 46 |
Correct |
72 ms |
35324 KB |
Output is correct |
| 47 |
Correct |
225 ms |
48068 KB |
Output is correct |
| 48 |
Correct |
325 ms |
68588 KB |
Output is correct |
| 49 |
Correct |
369 ms |
68408 KB |
Output is correct |
| 50 |
Correct |
230 ms |
48068 KB |
Output is correct |
| 51 |
Correct |
236 ms |
48272 KB |
Output is correct |
| 52 |
Correct |
307 ms |
48276 KB |
Output is correct |
| 53 |
Correct |
272 ms |
52804 KB |
Output is correct |
| 54 |
Correct |
393 ms |
85852 KB |
Output is correct |
| 55 |
Correct |
27 ms |
17912 KB |
Output is correct |
| 56 |
Correct |
19 ms |
16696 KB |
Output is correct |
| 57 |
Correct |
92 ms |
34688 KB |
Output is correct |
| 58 |
Correct |
63 ms |
27832 KB |
Output is correct |
| 59 |
Correct |
105 ms |
41624 KB |
Output is correct |
| 60 |
Correct |
363 ms |
68248 KB |
Output is correct |
| 61 |
Correct |
274 ms |
51652 KB |
Output is correct |
| 62 |
Correct |
229 ms |
48240 KB |
Output is correct |
| 63 |
Correct |
310 ms |
48264 KB |
Output is correct |
| 64 |
Correct |
537 ms |
103500 KB |
Output is correct |
| 65 |
Correct |
524 ms |
101724 KB |
Output is correct |
| 66 |
Correct |
366 ms |
68148 KB |
Output is correct |
| 67 |
Correct |
221 ms |
42652 KB |
Output is correct |
| 68 |
Correct |
450 ms |
65312 KB |
Output is correct |
| 69 |
Correct |
466 ms |
70212 KB |
Output is correct |
| 70 |
Correct |
447 ms |
63108 KB |
Output is correct |
