| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 935808 |
2024-02-29T14:34:24 Z |
BF001 |
Hard route (IZhO17_road) |
C++17 |
|
643 ms |
104948 KB |
#include <bits/stdc++.h>
using namespace std;
#define N 500005
#define int long long
#define fi first
#define se second
typedef pair<int, int> ii;
int n, dp[N], cnt[N], res = 0, way = 1;
vector<int> adj[N];
void init(int u, int p){
cnt[u] = 1;
for (auto x : adj[u]){
if (x == p) continue;
init(x, u);
if (dp[x] + 1 == dp[u]){
cnt[u] += cnt[x];
}
if (dp[x] + 1 > dp[u]) cnt[u] = cnt[x];
dp[u] = max(dp[u], dp[x] + 1);
}
}
bool cmp (int& i, int& j){
return dp[i] > dp[j];
}
void rr(int u, int p){
sort(adj[u].begin(), adj[u].end(), cmp);
if (adj[u].size() >= 3){
int cur = 0, cn = 0;
int a = dp[adj[u][0]] + 1, b = dp[adj[u][1]] + 1, c = dp[adj[u][2]] + 1;
cur = a * (b + c);
int ca = 0;
for (auto x : adj[u]){
if (dp[x] + 1 == c) cn += ca * cnt[x];
if (dp[x] + 1 == b) ca += cnt[x];
}
if (cur > res) res = cur, way = cn;
else if (cur == res) way += cn;
//cout << u << ' ' << " " << cur << " " << way << "\n";
}
ii f = {0, 1}, s = {0, 0};
for (auto x : adj[u]){
if (dp[x] + 1 > f.fi) s = f, f = {dp[x] + 1, cnt[x]};
else if (dp[x] + 1 == f.fi) f.se += cnt[x];
else if (dp[x] + 1 > s.fi) s = {dp[x] + 1, cnt[x]};
else if (dp[x] + 1 == s.fi) s.se += cnt[x];
}
int tmpdp = dp[u], tmpcnt = cnt[u];
for (auto x : adj[u]){
if (x == p) continue;
dp[u] = f.fi, cnt[u] = f.se;
if (dp[x] + 1 == f.fi && cnt[x] == f.se) dp[u] = s.fi, cnt[u] = s.se;
else if (dp[x] + 1 == f.fi && cnt[x] != f.se) dp[u] = f.fi, cnt[u] = f.se - cnt[x];
rr(x, u);
}
dp[u] = tmpdp, cnt[u] = tmpcnt;
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(NULL);
cin >> n;
for (int i = 1; i <= n - 1; i++){
int u, v;
cin >> u >> v;
adj[u].push_back(v);
adj[v].push_back(u);
}
init(1, 0);
rr(1, 0);
cout << res << " " << way;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
12892 KB |
Output is correct |
| 2 |
Correct |
3 ms |
12888 KB |
Output is correct |
| 3 |
Correct |
5 ms |
12892 KB |
Output is correct |
| 4 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 5 |
Correct |
3 ms |
12956 KB |
Output is correct |
| 6 |
Correct |
3 ms |
12888 KB |
Output is correct |
| 7 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 8 |
Correct |
3 ms |
12888 KB |
Output is correct |
| 9 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 10 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 11 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 12 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 13 |
Correct |
4 ms |
12892 KB |
Output is correct |
| 14 |
Correct |
3 ms |
12968 KB |
Output is correct |
| 15 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 16 |
Correct |
4 ms |
13148 KB |
Output is correct |
| 17 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 18 |
Correct |
4 ms |
12916 KB |
Output is correct |
| 19 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 20 |
Correct |
3 ms |
12900 KB |
Output is correct |
| 21 |
Correct |
4 ms |
12908 KB |
Output is correct |
| 22 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 23 |
Correct |
3 ms |
12956 KB |
Output is correct |
| 24 |
Correct |
3 ms |
12892 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
12892 KB |
Output is correct |
| 2 |
Correct |
3 ms |
12888 KB |
Output is correct |
| 3 |
Correct |
5 ms |
12892 KB |
Output is correct |
| 4 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 5 |
Correct |
3 ms |
12956 KB |
Output is correct |
| 6 |
Correct |
3 ms |
12888 KB |
Output is correct |
| 7 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 8 |
Correct |
3 ms |
12888 KB |
Output is correct |
| 9 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 10 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 11 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 12 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 13 |
Correct |
4 ms |
12892 KB |
Output is correct |
| 14 |
Correct |
3 ms |
12968 KB |
Output is correct |
| 15 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 16 |
Correct |
4 ms |
13148 KB |
Output is correct |
| 17 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 18 |
Correct |
4 ms |
12916 KB |
Output is correct |
| 19 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 20 |
Correct |
3 ms |
12900 KB |
Output is correct |
| 21 |
Correct |
4 ms |
12908 KB |
Output is correct |
| 22 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 23 |
Correct |
3 ms |
12956 KB |
Output is correct |
| 24 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 25 |
Correct |
4 ms |
13144 KB |
Output is correct |
| 26 |
Correct |
5 ms |
13404 KB |
Output is correct |
| 27 |
Correct |
4 ms |
13404 KB |
Output is correct |
| 28 |
Correct |
5 ms |
13404 KB |
Output is correct |
| 29 |
Correct |
4 ms |
13404 KB |
Output is correct |
| 30 |
Correct |
4 ms |
13424 KB |
Output is correct |
| 31 |
Correct |
5 ms |
13404 KB |
Output is correct |
| 32 |
Correct |
4 ms |
13400 KB |
Output is correct |
| 33 |
Correct |
4 ms |
13400 KB |
Output is correct |
| 34 |
Correct |
4 ms |
13404 KB |
Output is correct |
| 35 |
Correct |
5 ms |
13404 KB |
Output is correct |
| 36 |
Correct |
4 ms |
13404 KB |
Output is correct |
| 37 |
Correct |
5 ms |
13404 KB |
Output is correct |
| 38 |
Correct |
5 ms |
13732 KB |
Output is correct |
| 39 |
Correct |
4 ms |
13404 KB |
Output is correct |
| 40 |
Correct |
5 ms |
13220 KB |
Output is correct |
| 41 |
Correct |
4 ms |
13224 KB |
Output is correct |
| 42 |
Correct |
4 ms |
12984 KB |
Output is correct |
| 43 |
Correct |
6 ms |
13212 KB |
Output is correct |
| 44 |
Correct |
5 ms |
13148 KB |
Output is correct |
| 45 |
Correct |
4 ms |
13148 KB |
Output is correct |
| 46 |
Correct |
4 ms |
13152 KB |
Output is correct |
| 47 |
Correct |
4 ms |
13148 KB |
Output is correct |
| 48 |
Correct |
4 ms |
13068 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
12892 KB |
Output is correct |
| 2 |
Correct |
3 ms |
12888 KB |
Output is correct |
| 3 |
Correct |
5 ms |
12892 KB |
Output is correct |
| 4 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 5 |
Correct |
3 ms |
12956 KB |
Output is correct |
| 6 |
Correct |
3 ms |
12888 KB |
Output is correct |
| 7 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 8 |
Correct |
3 ms |
12888 KB |
Output is correct |
| 9 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 10 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 11 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 12 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 13 |
Correct |
4 ms |
12892 KB |
Output is correct |
| 14 |
Correct |
3 ms |
12968 KB |
Output is correct |
| 15 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 16 |
Correct |
4 ms |
13148 KB |
Output is correct |
| 17 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 18 |
Correct |
4 ms |
12916 KB |
Output is correct |
| 19 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 20 |
Correct |
3 ms |
12900 KB |
Output is correct |
| 21 |
Correct |
4 ms |
12908 KB |
Output is correct |
| 22 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 23 |
Correct |
3 ms |
12956 KB |
Output is correct |
| 24 |
Correct |
3 ms |
12892 KB |
Output is correct |
| 25 |
Correct |
4 ms |
13144 KB |
Output is correct |
| 26 |
Correct |
5 ms |
13404 KB |
Output is correct |
| 27 |
Correct |
4 ms |
13404 KB |
Output is correct |
| 28 |
Correct |
5 ms |
13404 KB |
Output is correct |
| 29 |
Correct |
4 ms |
13404 KB |
Output is correct |
| 30 |
Correct |
4 ms |
13424 KB |
Output is correct |
| 31 |
Correct |
5 ms |
13404 KB |
Output is correct |
| 32 |
Correct |
4 ms |
13400 KB |
Output is correct |
| 33 |
Correct |
4 ms |
13400 KB |
Output is correct |
| 34 |
Correct |
4 ms |
13404 KB |
Output is correct |
| 35 |
Correct |
5 ms |
13404 KB |
Output is correct |
| 36 |
Correct |
4 ms |
13404 KB |
Output is correct |
| 37 |
Correct |
5 ms |
13404 KB |
Output is correct |
| 38 |
Correct |
5 ms |
13732 KB |
Output is correct |
| 39 |
Correct |
4 ms |
13404 KB |
Output is correct |
| 40 |
Correct |
5 ms |
13220 KB |
Output is correct |
| 41 |
Correct |
4 ms |
13224 KB |
Output is correct |
| 42 |
Correct |
4 ms |
12984 KB |
Output is correct |
| 43 |
Correct |
6 ms |
13212 KB |
Output is correct |
| 44 |
Correct |
5 ms |
13148 KB |
Output is correct |
| 45 |
Correct |
4 ms |
13148 KB |
Output is correct |
| 46 |
Correct |
4 ms |
13152 KB |
Output is correct |
| 47 |
Correct |
4 ms |
13148 KB |
Output is correct |
| 48 |
Correct |
4 ms |
13068 KB |
Output is correct |
| 49 |
Correct |
394 ms |
67324 KB |
Output is correct |
| 50 |
Correct |
374 ms |
71860 KB |
Output is correct |
| 51 |
Correct |
411 ms |
75596 KB |
Output is correct |
| 52 |
Correct |
373 ms |
62432 KB |
Output is correct |
| 53 |
Correct |
277 ms |
72016 KB |
Output is correct |
| 54 |
Correct |
369 ms |
76140 KB |
Output is correct |
| 55 |
Correct |
310 ms |
66132 KB |
Output is correct |
| 56 |
Correct |
327 ms |
70492 KB |
Output is correct |
| 57 |
Correct |
357 ms |
76852 KB |
Output is correct |
| 58 |
Correct |
343 ms |
72016 KB |
Output is correct |
| 59 |
Correct |
326 ms |
71764 KB |
Output is correct |
| 60 |
Correct |
351 ms |
69868 KB |
Output is correct |
| 61 |
Correct |
558 ms |
104948 KB |
Output is correct |
| 62 |
Correct |
643 ms |
93568 KB |
Output is correct |
| 63 |
Correct |
581 ms |
60812 KB |
Output is correct |
| 64 |
Correct |
601 ms |
52908 KB |
Output is correct |
| 65 |
Correct |
592 ms |
47808 KB |
Output is correct |
| 66 |
Correct |
566 ms |
45176 KB |
Output is correct |
| 67 |
Correct |
575 ms |
43624 KB |
Output is correct |
| 68 |
Correct |
546 ms |
43088 KB |
Output is correct |
| 69 |
Correct |
483 ms |
42832 KB |
Output is correct |
| 70 |
Correct |
491 ms |
42948 KB |
Output is correct |
| 71 |
Correct |
542 ms |
42720 KB |
Output is correct |
| 72 |
Correct |
547 ms |
42636 KB |
Output is correct |
| 73 |
Correct |
515 ms |
42864 KB |
Output is correct |
| 74 |
Correct |
539 ms |
42804 KB |
Output is correct |
| 75 |
Correct |
455 ms |
43128 KB |
Output is correct |
| 76 |
Correct |
449 ms |
43464 KB |
Output is correct |
| 77 |
Correct |
316 ms |
44480 KB |
Output is correct |
| 78 |
Correct |
224 ms |
46772 KB |
Output is correct |
