oj.uz

Submission #1044757

# Submission time Handle Problem Language Result Execution time Memory
1044757 2024-08-05T13:16:44 Z goodspeed0208 Village (BOI20_village) C++14
100 / 100
 61 ms 17104 KB 
#include<bits/stdc++.h>
#define int long long
#define pii pair<long long, long long>
using namespace std;

int n, minn = 0, maxx = 0;
vector<vector<int> >G;
vector<int>minans;
vector<int>maxans;

bool dfs(int x, int p) {
	//vector<int>c;
	int y = x;
	for (auto i : G[x]) {
		if (i == p) continue;
		bool can = dfs(i, x);
		if (can) {
			minn += 2;
			minans[y] = i;
			minans[i] = x;
			y = i;
			//c.push_back(i);
		}
	}
	if (x == 0 && y == x) {
		minn += 2;
		minans[x] = minans[G[x][0]];
		minans[G[x][0]] = x;
	}
	if (y == x) return 1;
	else return 0;
	//cout << x <<" " << c.size() << "\n";
	/*for (int i = 0 ; i < c.size()/2 ; i++) {
		minn += 4;
		minans[c[i*2]] = c[i*2+1];
		minans[c[i*2+1]] = c[i*2];
	}
	if (c.size() % 2 == 1) {
		minn += 2;
		minans[c.back()] = x;
		minans[x] = c.back();
		return 0;
	} else {
		if (x == 0) {
			if (c.size() > 0) {
				minans[c[0]] = x;
				minans[x] = c[1];
			} else {
				minn += 2;
				minans[x] = minans[G[x][0]];
				minans[G[x][0]] = x;
			}
				
			return 0;
		}
		return 1;
	}*/
}

int cnt;

int findc(int x, int p) {
	int num = 1;
	bool can = 1;
	for (auto i : G[x]) {
		if (i == p) continue;
		int child = findc(i, x);
		if (child > n/2) can = 0;
		num += child;
	}
	if (n - num > n/2) can = 0;
	if (can) cnt = x;
	return num;
}

vector<int>arr;

void dis(int x, int p, int d) {
	maxx += d*2;
	arr.push_back(x);
	for (auto i : G[x]) {
		if (i == p) continue;
		dis(i, x, d+1);
	}
}

signed main() {
	cin >> n;
	G.resize(n); minans.resize(n); maxans.resize(n);
	for (int i = 0 ; i < n ; i++) minans[i] = i;
	int a, b;
	for (int i = 0 ; i < n-1 ; i++){
		cin >> a >> b; a--, b--;
		G[a].push_back(b);
		G[b].push_back(a);
	}
	dfs(0, -1);
	findc(0, -1);
	dis(cnt, -1, 0);
	for (int i = 0 ; i < n ; i++) {
		//cout << arr[i] <<" ";
		maxans[arr[i]] = arr[(i+n/2)%n];
	}
	//cout <<"\n";
	//assert(minn == ((n+1) / 2) * 2);
	cout << minn << " " << maxx << "\n";
	for (auto i : minans) cout << i+1 << " "; cout << "\n";
	for (auto i : maxans) cout << i+1 << " "; cout << "\n";
}

Compilation message

Village.cpp: In function 'int main()':
Village.cpp:107:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  107 |  for (auto i : minans) cout << i+1 << " "; cout << "\n";
      |  ^~~
Village.cpp:107:44: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  107 |  for (auto i : minans) cout << i+1 << " "; cout << "\n";
      |                                            ^~~~
Village.cpp:108:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  108 |  for (auto i : maxans) cout << i+1 << " "; cout << "\n";
      |  ^~~
Village.cpp:108:44: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  108 |  for (auto i : maxans) cout << i+1 << " "; cout << "\n";
      |                                            ^~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct

Subtask #2
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 420 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 420 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 344 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 1 ms 348 KB Output is correct
40 Correct 1 ms 348 KB Output is correct
41 Correct 1 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 1 ms 348 KB Output is correct
46 Correct 1 ms 344 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 51 ms 9092 KB Output is correct
49 Correct 58 ms 10192 KB Output is correct
50 Correct 57 ms 10184 KB Output is correct
51 Correct 42 ms 7876 KB Output is correct
52 Correct 51 ms 9928 KB Output is correct
53 Correct 47 ms 9048 KB Output is correct
54 Correct 33 ms 8540 KB Output is correct
55 Correct 61 ms 17104 KB Output is correct
56 Correct 57 ms 13512 KB Output is correct
57 Correct 56 ms 12232 KB Output is correct
58 Correct 58 ms 11232 KB Output is correct
59 Correct 53 ms 10292 KB Output is correct
60 Correct 42 ms 10316 KB Output is correct
61 Correct 45 ms 10168 KB Output is correct
62 Correct 51 ms 10396 KB Output is correct
63 Correct 43 ms 9708 KB Output is correct
64 Correct 46 ms 10436 KB Output is correct
65 Correct 46 ms 10692 KB Output is correct
66 Correct 48 ms 9932 KB Output is correct
67 Correct 37 ms 7876 KB Output is correct
68 Correct 40 ms 8904 KB Output is correct
69 Correct 46 ms 10696 KB Output is correct
70 Correct 48 ms 9916 KB Output is correct
71 Correct 38 ms 7368 KB Output is correct
72 Correct 35 ms 8392 KB Output is correct
73 Correct 47 ms 10532 KB Output is correct
74 Correct 49 ms 9864 KB Output is correct
75 Correct 51 ms 10704 KB Output is correct
76 Correct 48 ms 9848 KB Output is correct
77 Correct 51 ms 10188 KB Output is correct
78 Correct 38 ms 7008 KB Output is correct
79 Correct 37 ms 8132 KB Output is correct
80 Correct 52 ms 10504 KB Output is correct
81 Correct 53 ms 10440 KB Output is correct
82 Correct 44 ms 10184 KB Output is correct