| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 1100013 |
2024-10-12T11:33:15 Z |
ardadut |
Race (IOI11_race) |
C++17 |
|
271 ms |
38228 KB |
#include "race.h"
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
using namespace std;
vector<pair<ll,ll>> adj[200005];
bool del[200005];
ll sub[200005];
ll dp[1000000];
ll k;
ll ans = 1e10;
inline ll get_sub(ll node, ll parent){
sub[node] = 1;
for(auto go : adj[node]){
if(go.first == parent or del[go.first]) continue;
sub[node] += get_sub(go.first,node);
}
return sub[node];
}
inline ll get_centroid(ll node, ll parent, ll tree_size){
for(auto go : adj[node]){
if(go.first == parent or del[go.first]) continue;
if(sub[go.first] >= tree_size/2) return get_centroid(go.first,node,tree_size);
}
return node;
}
inline void control(ll node, ll parent, ll val, ll edge){
if(val > k) return;
if(dp[k-val] != -1) ans = min(ans,dp[k-val] + edge);
for(auto go : adj[node]){
if(go.first == parent or del[go.first]) continue;
control(go.first,node,val+go.second,edge+1);
}
}
inline void build(ll node, ll parent, ll val, ll edge){
if(val > k) return;
if(dp[val] != -1) dp[val] = min(dp[val],edge);
else dp[val] = edge;
for(auto go : adj[node]){
if(go.first == parent or del[go.first]) continue;
build(go.first,node,val+go.second,edge+1);
}
}
inline void dp_reset(ll node, ll parent, ll val){
if(val > k) return;
dp[val] = -1;
for(auto go : adj[node]){
if(go.first == parent or del[go.first]) continue;
dp_reset(go.first,node,val+go.second);
}
}
inline void solve(ll node){
ll centroid = get_centroid(node,-1,get_sub(node,-1));
dp[0] = 0;
for(auto go : adj[centroid]){
if(del[go.first]) continue;
control(go.first,centroid,go.second,1);
build(go.first,centroid,go.second,1);
}
for(auto go : adj[centroid]){
if(del[go.first]) continue;
dp_reset(go.first,centroid,go.second);
}
del[centroid] = 1;
for(auto go : adj[centroid]){
if(del[go.first]) continue;
solve(go.first);
}
}
int best_path(int N, int K, int H[][2], int L[]){
k = K;
memset(dp,-1,sizeof(dp));
for(ll i = 0 ; i < N-1 ; i++){
adj[H[i][1]].pb({H[i][0],L[i]});
adj[H[i][0]].pb({H[i][1],L[i]});
}
solve(0);
if(ans == 1e10) ans = -1;
return ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 2 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 3 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 4 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 5 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 6 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 7 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 8 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 9 |
Correct |
4 ms |
18504 KB |
Output is correct |
| 10 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 11 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 12 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 13 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 14 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 15 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 16 |
Correct |
2 ms |
18356 KB |
Output is correct |
| 17 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 18 |
Correct |
3 ms |
18268 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 2 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 3 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 4 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 5 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 6 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 7 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 8 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 9 |
Correct |
4 ms |
18504 KB |
Output is correct |
| 10 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 11 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 12 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 13 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 14 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 15 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 16 |
Correct |
2 ms |
18356 KB |
Output is correct |
| 17 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 18 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 19 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 20 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 21 |
Correct |
3 ms |
18404 KB |
Output is correct |
| 22 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 23 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 24 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 25 |
Correct |
5 ms |
18268 KB |
Output is correct |
| 26 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 27 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 28 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 29 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 30 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 31 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 32 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 33 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 34 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 35 |
Correct |
3 ms |
18364 KB |
Output is correct |
| 36 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 37 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 38 |
Correct |
4 ms |
18268 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 2 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 3 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 4 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 5 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 6 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 7 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 8 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 9 |
Correct |
4 ms |
18504 KB |
Output is correct |
| 10 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 11 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 12 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 13 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 14 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 15 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 16 |
Correct |
2 ms |
18356 KB |
Output is correct |
| 17 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 18 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 19 |
Correct |
83 ms |
26964 KB |
Output is correct |
| 20 |
Correct |
95 ms |
26972 KB |
Output is correct |
| 21 |
Correct |
91 ms |
26964 KB |
Output is correct |
| 22 |
Correct |
85 ms |
26964 KB |
Output is correct |
| 23 |
Correct |
42 ms |
27476 KB |
Output is correct |
| 24 |
Correct |
40 ms |
26716 KB |
Output is correct |
| 25 |
Correct |
79 ms |
27988 KB |
Output is correct |
| 26 |
Correct |
63 ms |
29012 KB |
Output is correct |
| 27 |
Correct |
98 ms |
33984 KB |
Output is correct |
| 28 |
Correct |
139 ms |
38228 KB |
Output is correct |
| 29 |
Correct |
134 ms |
37716 KB |
Output is correct |
| 30 |
Correct |
97 ms |
34128 KB |
Output is correct |
| 31 |
Correct |
94 ms |
34132 KB |
Output is correct |
| 32 |
Correct |
109 ms |
34124 KB |
Output is correct |
| 33 |
Correct |
115 ms |
32716 KB |
Output is correct |
| 34 |
Correct |
100 ms |
33620 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 2 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 3 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 4 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 5 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 6 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 7 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 8 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 9 |
Correct |
4 ms |
18504 KB |
Output is correct |
| 10 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 11 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 12 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 13 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 14 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 15 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 16 |
Correct |
2 ms |
18356 KB |
Output is correct |
| 17 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 18 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 19 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 20 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 21 |
Correct |
3 ms |
18404 KB |
Output is correct |
| 22 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 23 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 24 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 25 |
Correct |
5 ms |
18268 KB |
Output is correct |
| 26 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 27 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 28 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 29 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 30 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 31 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 32 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 33 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 34 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 35 |
Correct |
3 ms |
18364 KB |
Output is correct |
| 36 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 37 |
Correct |
3 ms |
18268 KB |
Output is correct |
| 38 |
Correct |
4 ms |
18268 KB |
Output is correct |
| 39 |
Correct |
83 ms |
26964 KB |
Output is correct |
| 40 |
Correct |
95 ms |
26972 KB |
Output is correct |
| 41 |
Correct |
91 ms |
26964 KB |
Output is correct |
| 42 |
Correct |
85 ms |
26964 KB |
Output is correct |
| 43 |
Correct |
42 ms |
27476 KB |
Output is correct |
| 44 |
Correct |
40 ms |
26716 KB |
Output is correct |
| 45 |
Correct |
79 ms |
27988 KB |
Output is correct |
| 46 |
Correct |
63 ms |
29012 KB |
Output is correct |
| 47 |
Correct |
98 ms |
33984 KB |
Output is correct |
| 48 |
Correct |
139 ms |
38228 KB |
Output is correct |
| 49 |
Correct |
134 ms |
37716 KB |
Output is correct |
| 50 |
Correct |
97 ms |
34128 KB |
Output is correct |
| 51 |
Correct |
94 ms |
34132 KB |
Output is correct |
| 52 |
Correct |
109 ms |
34124 KB |
Output is correct |
| 53 |
Correct |
115 ms |
32716 KB |
Output is correct |
| 54 |
Correct |
100 ms |
33620 KB |
Output is correct |
| 55 |
Correct |
8 ms |
19036 KB |
Output is correct |
| 56 |
Correct |
9 ms |
19036 KB |
Output is correct |
| 57 |
Correct |
40 ms |
27244 KB |
Output is correct |
| 58 |
Correct |
22 ms |
26316 KB |
Output is correct |
| 59 |
Correct |
61 ms |
29012 KB |
Output is correct |
| 60 |
Correct |
254 ms |
37716 KB |
Output is correct |
| 61 |
Correct |
109 ms |
34364 KB |
Output is correct |
| 62 |
Correct |
113 ms |
34120 KB |
Output is correct |
| 63 |
Correct |
130 ms |
34144 KB |
Output is correct |
| 64 |
Correct |
271 ms |
34224 KB |
Output is correct |
| 65 |
Correct |
109 ms |
34644 KB |
Output is correct |
| 66 |
Correct |
217 ms |
37192 KB |
Output is correct |
| 67 |
Correct |
64 ms |
34240 KB |
Output is correct |
| 68 |
Correct |
134 ms |
34388 KB |
Output is correct |
| 69 |
Correct |
134 ms |
34248 KB |
Output is correct |
| 70 |
Correct |
120 ms |
33620 KB |
Output is correct |
