#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
vector<vector<ll>> gra;
vector<ll> posmin, posmax, sz, dec1, dec2;
vector<bool> used;
ll ansmin = 0, ansmax = 0, n, cnt = 0;
void dfs(int x, int p){
sz[x] = 1;
for(auto i : gra[x]){
if(i == p)continue;
dfs(i,x);
sz[x]+=sz[i];
if(used[i])continue;
used[x] = true;
swap(posmin[x],posmin[i]);
ansmin += 2;
}
if(x)ansmax += min(sz[x], n-sz[x])*2;
else if(!used[0]){
swap(posmin[0], posmin[gra[0][0]]);
ansmin+=2;
}
}
void findroot(int x, int p){
for(auto i : gra[x]){
if(i == p)continue;
if(sz[i] > n/2){
dec1[i] = 0;
dec2[0] = i;
findroot(i,x);
}
}
}
void encode(int x, int p){
dec1[cnt] = x;
dec2[x] = cnt++;
for(auto i : gra[x]){
if(i == p)continue;
encode(i,x);
}
}
int main(){
ios_base::sync_with_stdio(0),cin.tie(0);
cin >> n;
gra.resize(n);
posmin.resize(n);
posmax.resize(n);
dec1.resize(n);
dec2.resize(n);
sz.resize(n);
used.resize(n,false);
iota(posmin.begin(), posmin.end(), 0);
iota(posmax.begin(), posmax.end(), 0);
for(int i = 0; i < n-1; ++i){
int a, b; cin >> a >> b; a--; b--;
gra[a].push_back(b);
gra[b].push_back(a);
}
dfs(0,0);
findroot(0,0);
encode(dec1[0],dec1[0]);
for(int i = 0; i < n; ++i){
posmax[i] = dec1[(dec2[i]+n/2)%n];
}
cout << ansmin << " " << ansmax << "\n";
for(auto x : posmin)cout << x+1 << " ";
cout << "\n";
for(auto x : posmax)cout << x+1 << " ";
cout << "\n";
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
0 ms |
384 KB |
Output is correct |
| 4 |
Correct |
0 ms |
384 KB |
Output is correct |
| 5 |
Correct |
0 ms |
384 KB |
Output is correct |
| 6 |
Correct |
1 ms |
384 KB |
Output is correct |
| 7 |
Correct |
0 ms |
384 KB |
Output is correct |
| 8 |
Correct |
1 ms |
384 KB |
Output is correct |
| 9 |
Correct |
1 ms |
384 KB |
Output is correct |
| 10 |
Correct |
0 ms |
384 KB |
Output is correct |
| 11 |
Correct |
1 ms |
384 KB |
Output is correct |
| 12 |
Correct |
0 ms |
384 KB |
Output is correct |
| 13 |
Correct |
0 ms |
384 KB |
Output is correct |
| 14 |
Correct |
0 ms |
384 KB |
Output is correct |
| 15 |
Correct |
1 ms |
384 KB |
Output is correct |
| 16 |
Correct |
0 ms |
384 KB |
Output is correct |
| 17 |
Correct |
0 ms |
384 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
416 KB |
Output is correct |
| 4 |
Correct |
1 ms |
384 KB |
Output is correct |
| 5 |
Correct |
1 ms |
512 KB |
Output is correct |
| 6 |
Correct |
1 ms |
384 KB |
Output is correct |
| 7 |
Correct |
1 ms |
512 KB |
Output is correct |
| 8 |
Correct |
1 ms |
384 KB |
Output is correct |
| 9 |
Correct |
1 ms |
384 KB |
Output is correct |
| 10 |
Correct |
1 ms |
512 KB |
Output is correct |
| 11 |
Correct |
1 ms |
512 KB |
Output is correct |
| 12 |
Correct |
1 ms |
384 KB |
Output is correct |
| 13 |
Correct |
1 ms |
384 KB |
Output is correct |
| 14 |
Correct |
1 ms |
512 KB |
Output is correct |
| 15 |
Correct |
1 ms |
384 KB |
Output is correct |
| 16 |
Correct |
1 ms |
512 KB |
Output is correct |
| 17 |
Correct |
1 ms |
384 KB |
Output is correct |
| 18 |
Correct |
1 ms |
384 KB |
Output is correct |
| 19 |
Correct |
1 ms |
512 KB |
Output is correct |
| 20 |
Correct |
1 ms |
512 KB |
Output is correct |
| 21 |
Correct |
1 ms |
512 KB |
Output is correct |
| 22 |
Correct |
1 ms |
384 KB |
Output is correct |
| 23 |
Correct |
1 ms |
384 KB |
Output is correct |
| 24 |
Correct |
1 ms |
384 KB |
Output is correct |
| 25 |
Correct |
1 ms |
384 KB |
Output is correct |
| 26 |
Correct |
1 ms |
640 KB |
Output is correct |
| 27 |
Correct |
1 ms |
384 KB |
Output is correct |
| 28 |
Correct |
1 ms |
512 KB |
Output is correct |
| 29 |
Correct |
1 ms |
512 KB |
Output is correct |
| 30 |
Correct |
1 ms |
384 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
1 ms |
384 KB |
Output is correct |
| 3 |
Correct |
0 ms |
384 KB |
Output is correct |
| 4 |
Correct |
0 ms |
384 KB |
Output is correct |
| 5 |
Correct |
0 ms |
384 KB |
Output is correct |
| 6 |
Correct |
1 ms |
384 KB |
Output is correct |
| 7 |
Correct |
0 ms |
384 KB |
Output is correct |
| 8 |
Correct |
1 ms |
384 KB |
Output is correct |
| 9 |
Correct |
1 ms |
384 KB |
Output is correct |
| 10 |
Correct |
0 ms |
384 KB |
Output is correct |
| 11 |
Correct |
1 ms |
384 KB |
Output is correct |
| 12 |
Correct |
0 ms |
384 KB |
Output is correct |
| 13 |
Correct |
0 ms |
384 KB |
Output is correct |
| 14 |
Correct |
0 ms |
384 KB |
Output is correct |
| 15 |
Correct |
1 ms |
384 KB |
Output is correct |
| 16 |
Correct |
0 ms |
384 KB |
Output is correct |
| 17 |
Correct |
0 ms |
384 KB |
Output is correct |
| 18 |
Correct |
1 ms |
384 KB |
Output is correct |
| 19 |
Correct |
1 ms |
384 KB |
Output is correct |
| 20 |
Correct |
1 ms |
416 KB |
Output is correct |
| 21 |
Correct |
1 ms |
384 KB |
Output is correct |
| 22 |
Correct |
1 ms |
512 KB |
Output is correct |
| 23 |
Correct |
1 ms |
384 KB |
Output is correct |
| 24 |
Correct |
1 ms |
512 KB |
Output is correct |
| 25 |
Correct |
1 ms |
384 KB |
Output is correct |
| 26 |
Correct |
1 ms |
384 KB |
Output is correct |
| 27 |
Correct |
1 ms |
512 KB |
Output is correct |
| 28 |
Correct |
1 ms |
512 KB |
Output is correct |
| 29 |
Correct |
1 ms |
384 KB |
Output is correct |
| 30 |
Correct |
1 ms |
384 KB |
Output is correct |
| 31 |
Correct |
1 ms |
512 KB |
Output is correct |
| 32 |
Correct |
1 ms |
384 KB |
Output is correct |
| 33 |
Correct |
1 ms |
512 KB |
Output is correct |
| 34 |
Correct |
1 ms |
384 KB |
Output is correct |
| 35 |
Correct |
1 ms |
384 KB |
Output is correct |
| 36 |
Correct |
1 ms |
512 KB |
Output is correct |
| 37 |
Correct |
1 ms |
512 KB |
Output is correct |
| 38 |
Correct |
1 ms |
512 KB |
Output is correct |
| 39 |
Correct |
1 ms |
384 KB |
Output is correct |
| 40 |
Correct |
1 ms |
384 KB |
Output is correct |
| 41 |
Correct |
1 ms |
384 KB |
Output is correct |
| 42 |
Correct |
1 ms |
384 KB |
Output is correct |
| 43 |
Correct |
1 ms |
640 KB |
Output is correct |
| 44 |
Correct |
1 ms |
384 KB |
Output is correct |
| 45 |
Correct |
1 ms |
512 KB |
Output is correct |
| 46 |
Correct |
1 ms |
512 KB |
Output is correct |
| 47 |
Correct |
1 ms |
384 KB |
Output is correct |
| 48 |
Correct |
81 ms |
10616 KB |
Output is correct |
| 49 |
Correct |
89 ms |
11640 KB |
Output is correct |
| 50 |
Correct |
90 ms |
11640 KB |
Output is correct |
| 51 |
Correct |
62 ms |
9084 KB |
Output is correct |
| 52 |
Correct |
90 ms |
11516 KB |
Output is correct |
| 53 |
Correct |
78 ms |
10360 KB |
Output is correct |
| 54 |
Correct |
43 ms |
9976 KB |
Output is correct |
| 55 |
Correct |
118 ms |
20088 KB |
Output is correct |
| 56 |
Correct |
107 ms |
15864 KB |
Output is correct |
| 57 |
Correct |
105 ms |
14200 KB |
Output is correct |
| 58 |
Correct |
96 ms |
13048 KB |
Output is correct |
| 59 |
Correct |
90 ms |
11768 KB |
Output is correct |
| 60 |
Correct |
63 ms |
11760 KB |
Output is correct |
| 61 |
Correct |
62 ms |
11752 KB |
Output is correct |
| 62 |
Correct |
74 ms |
12024 KB |
Output is correct |
| 63 |
Correct |
65 ms |
11256 KB |
Output is correct |
| 64 |
Correct |
83 ms |
12024 KB |
Output is correct |
| 65 |
Correct |
90 ms |
12152 KB |
Output is correct |
| 66 |
Correct |
80 ms |
11260 KB |
Output is correct |
| 67 |
Correct |
50 ms |
8820 KB |
Output is correct |
| 68 |
Correct |
66 ms |
10360 KB |
Output is correct |
| 69 |
Correct |
93 ms |
12152 KB |
Output is correct |
| 70 |
Correct |
67 ms |
11384 KB |
Output is correct |
| 71 |
Correct |
50 ms |
8568 KB |
Output is correct |
| 72 |
Correct |
52 ms |
9592 KB |
Output is correct |
| 73 |
Correct |
71 ms |
12152 KB |
Output is correct |
| 74 |
Correct |
62 ms |
11128 KB |
Output is correct |
| 75 |
Correct |
87 ms |
12024 KB |
Output is correct |
| 76 |
Correct |
84 ms |
11512 KB |
Output is correct |
| 77 |
Correct |
78 ms |
11640 KB |
Output is correct |
| 78 |
Correct |
47 ms |
8056 KB |
Output is correct |
| 79 |
Correct |
55 ms |
9208 KB |
Output is correct |
| 80 |
Correct |
97 ms |
12024 KB |
Output is correct |
| 81 |
Correct |
75 ms |
11896 KB |
Output is correct |
| 82 |
Correct |
71 ms |
11640 KB |
Output is correct |
