| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 199209 |
2020-01-30T08:58:36 Z |
dennisstar |
Race (IOI11_race) |
C++17 |
|
1172 ms |
35576 KB |
#include <bits/stdc++.h>
#define fi first
#define se second
#define em emplace
#define eb emplace_back
#define sq(X) ((X)*(X))
#define all(V) (V).begin(), (V).end()
#define chk_init memset(chk, 0, sizeof(chk))
#define unq(V) (V).erase(unique(all(V)), (V).end())
using namespace std;
typedef long long ll;
typedef vector<ll> vlm;
typedef vector<int> vim;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
const int INF=(1<<30);
#include "race.h"
int N, K;
vector<pii> adj[200010];
int fin[200010], sz[200010], im, ans;
set<pii> S;
pii vis[200010]; int tp;
void subsz(int now, int par) {
sz[now]=1;
for (auto &i:adj[now]) if (i.fi!=par&&!fin[i.fi]) {
subsz(i.fi, now);
sz[now]+=sz[i.fi];
}
}
int get_cent(int now, int par) {
for (auto &i:adj[now]) if (i.fi!=par&&!fin[i.fi]&&sz[i.fi]>=im/2) return get_cent(i.fi, now);
return now;
}
void visit(int now, int par, int d, int dep) {
vis[tp++]=pii(d, dep);
for (auto &i:adj[now]) if (i.fi!=par&&!fin[i.fi]) visit(i.fi, now, d+i.se, dep+1);
}
void dfs(int now) {
subsz(now, 0); im=sz[now];
int cent=get_cent(now, 0); fin[cent]=1;
S.clear(); set<pii>::iterator it;
for (auto &i:adj[cent]) if (!fin[i.fi]) {
tp=0; visit(i.fi, cent, i.se, 1);
for (int j=0; j<tp; j++) {
it=S.lower_bound(pii(K-vis[j].fi, 0));
if (it==S.end()||it->fi!=K-vis[j].fi) continue;
ans=min(ans, it->se+vis[j].se);
}
for (int j=0; j<tp; j++) S.insert(vis[j]);
}
it=S.lower_bound(pii(K, 0));
if (!(it==S.end()||it->fi!=K)) ans=min(ans, it->se);
for (auto &i:adj[cent]) if (!fin[i.fi]) dfs(i.fi);
}
int best_path(int N_, int K_, int H[][2], int L[]) {
N=N_; K=K_;
for (int i=0; i<N-1; i++) adj[H[i][0]+1].eb(H[i][1]+1, L[i]), adj[H[i][1]+1].eb(H[i][0]+1, L[i]);
ans=INF; dfs(1);
return ans==INF?-1:ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 2 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 3 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 4 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 5 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 6 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 7 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 8 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 9 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 10 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 11 |
Correct |
8 ms |
5116 KB |
Output is correct |
| 12 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 13 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 14 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 15 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 16 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 17 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 18 |
Correct |
8 ms |
4984 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 2 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 3 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 4 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 5 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 6 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 7 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 8 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 9 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 10 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 11 |
Correct |
8 ms |
5116 KB |
Output is correct |
| 12 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 13 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 14 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 15 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 16 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 17 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 18 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 19 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 20 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 21 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 22 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 23 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 24 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 25 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 26 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 27 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 28 |
Correct |
10 ms |
5240 KB |
Output is correct |
| 29 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 30 |
Correct |
11 ms |
5240 KB |
Output is correct |
| 31 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 32 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 33 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 34 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 35 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 36 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 37 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 38 |
Correct |
9 ms |
5112 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 2 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 3 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 4 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 5 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 6 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 7 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 8 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 9 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 10 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 11 |
Correct |
8 ms |
5116 KB |
Output is correct |
| 12 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 13 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 14 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 15 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 16 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 17 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 18 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 19 |
Correct |
295 ms |
11360 KB |
Output is correct |
| 20 |
Correct |
282 ms |
11896 KB |
Output is correct |
| 21 |
Correct |
312 ms |
12104 KB |
Output is correct |
| 22 |
Correct |
244 ms |
11896 KB |
Output is correct |
| 23 |
Correct |
249 ms |
12280 KB |
Output is correct |
| 24 |
Correct |
142 ms |
11848 KB |
Output is correct |
| 25 |
Correct |
364 ms |
19064 KB |
Output is correct |
| 26 |
Correct |
249 ms |
20472 KB |
Output is correct |
| 27 |
Correct |
374 ms |
19832 KB |
Output is correct |
| 28 |
Correct |
1000 ms |
35576 KB |
Output is correct |
| 29 |
Correct |
999 ms |
34808 KB |
Output is correct |
| 30 |
Correct |
379 ms |
19832 KB |
Output is correct |
| 31 |
Correct |
369 ms |
19700 KB |
Output is correct |
| 32 |
Correct |
473 ms |
19832 KB |
Output is correct |
| 33 |
Correct |
539 ms |
17016 KB |
Output is correct |
| 34 |
Correct |
928 ms |
26136 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 2 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 3 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 4 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 5 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 6 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 7 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 8 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 9 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 10 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 11 |
Correct |
8 ms |
5116 KB |
Output is correct |
| 12 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 13 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 14 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 15 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 16 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 17 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 18 |
Correct |
8 ms |
4984 KB |
Output is correct |
| 19 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 20 |
Correct |
8 ms |
5112 KB |
Output is correct |
| 21 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 22 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 23 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 24 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 25 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 26 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 27 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 28 |
Correct |
10 ms |
5240 KB |
Output is correct |
| 29 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 30 |
Correct |
11 ms |
5240 KB |
Output is correct |
| 31 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 32 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 33 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 34 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 35 |
Correct |
10 ms |
5112 KB |
Output is correct |
| 36 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 37 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 38 |
Correct |
9 ms |
5112 KB |
Output is correct |
| 39 |
Correct |
295 ms |
11360 KB |
Output is correct |
| 40 |
Correct |
282 ms |
11896 KB |
Output is correct |
| 41 |
Correct |
312 ms |
12104 KB |
Output is correct |
| 42 |
Correct |
244 ms |
11896 KB |
Output is correct |
| 43 |
Correct |
249 ms |
12280 KB |
Output is correct |
| 44 |
Correct |
142 ms |
11848 KB |
Output is correct |
| 45 |
Correct |
364 ms |
19064 KB |
Output is correct |
| 46 |
Correct |
249 ms |
20472 KB |
Output is correct |
| 47 |
Correct |
374 ms |
19832 KB |
Output is correct |
| 48 |
Correct |
1000 ms |
35576 KB |
Output is correct |
| 49 |
Correct |
999 ms |
34808 KB |
Output is correct |
| 50 |
Correct |
379 ms |
19832 KB |
Output is correct |
| 51 |
Correct |
369 ms |
19700 KB |
Output is correct |
| 52 |
Correct |
473 ms |
19832 KB |
Output is correct |
| 53 |
Correct |
539 ms |
17016 KB |
Output is correct |
| 54 |
Correct |
928 ms |
26136 KB |
Output is correct |
| 55 |
Correct |
28 ms |
6136 KB |
Output is correct |
| 56 |
Correct |
23 ms |
5752 KB |
Output is correct |
| 57 |
Correct |
144 ms |
11896 KB |
Output is correct |
| 58 |
Correct |
57 ms |
11628 KB |
Output is correct |
| 59 |
Correct |
283 ms |
20728 KB |
Output is correct |
| 60 |
Correct |
1016 ms |
35192 KB |
Output is correct |
| 61 |
Correct |
427 ms |
22904 KB |
Output is correct |
| 62 |
Correct |
366 ms |
19832 KB |
Output is correct |
| 63 |
Correct |
462 ms |
19832 KB |
Output is correct |
| 64 |
Correct |
1172 ms |
26524 KB |
Output is correct |
| 65 |
Correct |
980 ms |
27384 KB |
Output is correct |
| 66 |
Correct |
1010 ms |
33400 KB |
Output is correct |
| 67 |
Correct |
168 ms |
17636 KB |
Output is correct |
| 68 |
Correct |
590 ms |
27256 KB |
Output is correct |
| 69 |
Correct |
605 ms |
27768 KB |
Output is correct |
| 70 |
Correct |
550 ms |
26360 KB |
Output is correct |
