| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 500415 |
2021-12-31T00:55:52 Z |
zhougz |
Village (BOI20_village) |
C++17 |
|
110 ms |
28032 KB |
#include <bits/stdc++.h>
using namespace std;
#define int long long
int n;
const int MAXN = 100'050;
vector<vector<int>> v(MAXN, vector<int>());
pair<int, vector<int>> slv1(int n, vector<vector<int>> v) {
int res = 0;
vector<int> arr(n); // arr[i] denotes guy at place where i was
iota(arr.begin(), arr.end(), 0);
function<void(int, int)> dfs = [&](int x, int p) -> void {
for (auto z : v[x]) {
if (z != p) {
dfs(z, x);
}
}
if (arr[x] == x) {
if (x != 0) {
swap(arr[x], arr[p]);
} else {
swap(arr[0], arr[v[0][0]]);
}
res += 2;
}
};
dfs(0, -1);
vector<int> ans(n);
for (int i = 0; i < n; i++) {
ans[arr[i]] = i;
}
return make_pair(res, ans);
}
pair<int, vector<int>> slv2(int n, vector<vector<int>> v) {
int mx = 0, cnt = 0, centroid = -1;
vector<int> sz(n), pre(n);
function<void(int, int)> dfs = [&](int x, int p) -> void {
pre[cnt++] = x;
sz[x] = 1;
for (auto z : v[x]) {
if (z != p) {
dfs(z, x);
sz[x] += sz[z];
mx += min(sz[z], n - sz[z]);
}
}
if (sz[x] > n / 2 && centroid == -1) {
centroid = x;
}
};
dfs(0, -1);
vector<int> ans(n);
for (int i = 0; i < n; i++) {
ans[pre[i]] = pre[(i + n / 2) % n];
}
return make_pair(2 * mx, ans);
}
int32_t main() {
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n;
for (int i = 0, a, b; i < n - 1; i++) {
cin >> a >> b;
a--;
b--;
v[a].push_back(b);
v[b].push_back(a);
}
int res1, res2;
vector<int> arr1, arr2;
tie(res1, arr1) = slv1(n, v);
tie(res2, arr2) = slv2(n, v);
cout << res1 << ' ' << res2 << '\n';
for (auto x : arr1) {
cout << x + 1 << ' ';
}
cout << '\n';
for (auto x : arr2) {
cout << x + 1 << ' ';
}
cout << '\n';
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
5024 KB |
Output is correct |
| 2 |
Correct |
4 ms |
4932 KB |
Output is correct |
| 3 |
Correct |
4 ms |
4964 KB |
Output is correct |
| 4 |
Correct |
5 ms |
4940 KB |
Output is correct |
| 5 |
Correct |
6 ms |
4980 KB |
Output is correct |
| 6 |
Correct |
4 ms |
5024 KB |
Output is correct |
| 7 |
Correct |
4 ms |
4980 KB |
Output is correct |
| 8 |
Correct |
4 ms |
4984 KB |
Output is correct |
| 9 |
Correct |
4 ms |
4972 KB |
Output is correct |
| 10 |
Correct |
4 ms |
4976 KB |
Output is correct |
| 11 |
Correct |
4 ms |
5024 KB |
Output is correct |
| 12 |
Correct |
5 ms |
4972 KB |
Output is correct |
| 13 |
Correct |
4 ms |
5024 KB |
Output is correct |
| 14 |
Correct |
4 ms |
5024 KB |
Output is correct |
| 15 |
Correct |
4 ms |
5024 KB |
Output is correct |
| 16 |
Correct |
4 ms |
4972 KB |
Output is correct |
| 17 |
Correct |
4 ms |
4976 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
7 ms |
5024 KB |
Output is correct |
| 2 |
Correct |
6 ms |
5056 KB |
Output is correct |
| 3 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 4 |
Correct |
4 ms |
5152 KB |
Output is correct |
| 5 |
Correct |
4 ms |
5152 KB |
Output is correct |
| 6 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 7 |
Correct |
4 ms |
5200 KB |
Output is correct |
| 8 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 9 |
Correct |
4 ms |
5116 KB |
Output is correct |
| 10 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 11 |
Correct |
7 ms |
5152 KB |
Output is correct |
| 12 |
Correct |
5 ms |
5144 KB |
Output is correct |
| 13 |
Correct |
6 ms |
5152 KB |
Output is correct |
| 14 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 15 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 16 |
Correct |
4 ms |
5152 KB |
Output is correct |
| 17 |
Correct |
5 ms |
5120 KB |
Output is correct |
| 18 |
Correct |
5 ms |
5124 KB |
Output is correct |
| 19 |
Correct |
4 ms |
5152 KB |
Output is correct |
| 20 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 21 |
Correct |
5 ms |
5124 KB |
Output is correct |
| 22 |
Correct |
5 ms |
5116 KB |
Output is correct |
| 23 |
Correct |
5 ms |
5068 KB |
Output is correct |
| 24 |
Correct |
5 ms |
5068 KB |
Output is correct |
| 25 |
Correct |
5 ms |
5064 KB |
Output is correct |
| 26 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 27 |
Correct |
4 ms |
5064 KB |
Output is correct |
| 28 |
Correct |
4 ms |
5152 KB |
Output is correct |
| 29 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 30 |
Correct |
5 ms |
5112 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
5024 KB |
Output is correct |
| 2 |
Correct |
4 ms |
4932 KB |
Output is correct |
| 3 |
Correct |
4 ms |
4964 KB |
Output is correct |
| 4 |
Correct |
5 ms |
4940 KB |
Output is correct |
| 5 |
Correct |
6 ms |
4980 KB |
Output is correct |
| 6 |
Correct |
4 ms |
5024 KB |
Output is correct |
| 7 |
Correct |
4 ms |
4980 KB |
Output is correct |
| 8 |
Correct |
4 ms |
4984 KB |
Output is correct |
| 9 |
Correct |
4 ms |
4972 KB |
Output is correct |
| 10 |
Correct |
4 ms |
4976 KB |
Output is correct |
| 11 |
Correct |
4 ms |
5024 KB |
Output is correct |
| 12 |
Correct |
5 ms |
4972 KB |
Output is correct |
| 13 |
Correct |
4 ms |
5024 KB |
Output is correct |
| 14 |
Correct |
4 ms |
5024 KB |
Output is correct |
| 15 |
Correct |
4 ms |
5024 KB |
Output is correct |
| 16 |
Correct |
4 ms |
4972 KB |
Output is correct |
| 17 |
Correct |
4 ms |
4976 KB |
Output is correct |
| 18 |
Correct |
7 ms |
5024 KB |
Output is correct |
| 19 |
Correct |
6 ms |
5056 KB |
Output is correct |
| 20 |
Correct |
4 ms |
5068 KB |
Output is correct |
| 21 |
Correct |
4 ms |
5152 KB |
Output is correct |
| 22 |
Correct |
4 ms |
5152 KB |
Output is correct |
| 23 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 24 |
Correct |
4 ms |
5200 KB |
Output is correct |
| 25 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 26 |
Correct |
4 ms |
5116 KB |
Output is correct |
| 27 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 28 |
Correct |
7 ms |
5152 KB |
Output is correct |
| 29 |
Correct |
5 ms |
5144 KB |
Output is correct |
| 30 |
Correct |
6 ms |
5152 KB |
Output is correct |
| 31 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 32 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 33 |
Correct |
4 ms |
5152 KB |
Output is correct |
| 34 |
Correct |
5 ms |
5120 KB |
Output is correct |
| 35 |
Correct |
5 ms |
5124 KB |
Output is correct |
| 36 |
Correct |
4 ms |
5152 KB |
Output is correct |
| 37 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 38 |
Correct |
5 ms |
5124 KB |
Output is correct |
| 39 |
Correct |
5 ms |
5116 KB |
Output is correct |
| 40 |
Correct |
5 ms |
5068 KB |
Output is correct |
| 41 |
Correct |
5 ms |
5068 KB |
Output is correct |
| 42 |
Correct |
5 ms |
5064 KB |
Output is correct |
| 43 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 44 |
Correct |
4 ms |
5064 KB |
Output is correct |
| 45 |
Correct |
4 ms |
5152 KB |
Output is correct |
| 46 |
Correct |
5 ms |
5152 KB |
Output is correct |
| 47 |
Correct |
5 ms |
5112 KB |
Output is correct |
| 48 |
Correct |
97 ms |
17212 KB |
Output is correct |
| 49 |
Correct |
90 ms |
18392 KB |
Output is correct |
| 50 |
Correct |
95 ms |
18460 KB |
Output is correct |
| 51 |
Correct |
63 ms |
15480 KB |
Output is correct |
| 52 |
Correct |
92 ms |
18228 KB |
Output is correct |
| 53 |
Correct |
87 ms |
16972 KB |
Output is correct |
| 54 |
Correct |
42 ms |
16064 KB |
Output is correct |
| 55 |
Correct |
110 ms |
28032 KB |
Output is correct |
| 56 |
Correct |
91 ms |
22904 KB |
Output is correct |
| 57 |
Correct |
95 ms |
21200 KB |
Output is correct |
| 58 |
Correct |
91 ms |
19824 KB |
Output is correct |
| 59 |
Correct |
86 ms |
18548 KB |
Output is correct |
| 60 |
Correct |
82 ms |
18940 KB |
Output is correct |
| 61 |
Correct |
73 ms |
19112 KB |
Output is correct |
| 62 |
Correct |
86 ms |
19108 KB |
Output is correct |
| 63 |
Correct |
68 ms |
18260 KB |
Output is correct |
| 64 |
Correct |
105 ms |
19148 KB |
Output is correct |
| 65 |
Correct |
69 ms |
19368 KB |
Output is correct |
| 66 |
Correct |
90 ms |
18380 KB |
Output is correct |
| 67 |
Correct |
49 ms |
15340 KB |
Output is correct |
| 68 |
Correct |
82 ms |
17164 KB |
Output is correct |
| 69 |
Correct |
76 ms |
19448 KB |
Output is correct |
| 70 |
Correct |
65 ms |
18456 KB |
Output is correct |
| 71 |
Correct |
48 ms |
14928 KB |
Output is correct |
| 72 |
Correct |
84 ms |
16356 KB |
Output is correct |
| 73 |
Correct |
71 ms |
19444 KB |
Output is correct |
| 74 |
Correct |
84 ms |
18200 KB |
Output is correct |
| 75 |
Correct |
87 ms |
18292 KB |
Output is correct |
| 76 |
Correct |
98 ms |
18516 KB |
Output is correct |
| 77 |
Correct |
79 ms |
18652 KB |
Output is correct |
| 78 |
Correct |
50 ms |
14292 KB |
Output is correct |
| 79 |
Correct |
55 ms |
15756 KB |
Output is correct |
| 80 |
Correct |
104 ms |
18428 KB |
Output is correct |
| 81 |
Correct |
71 ms |
18816 KB |
Output is correct |
| 82 |
Correct |
90 ms |
18988 KB |
Output is correct |
