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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. vector<int> height(1e5+7);
  4.  
  5. void DFS(int node, vector<vector<int>>& g, vector<int>& visited, vector<int>& parent){
  6.  
  7. 	visited[node] = 1;
  8. 	int h = 0;
  9. 	for (auto &i : g[node]){
  10. 		if(visited[i] == 0){
  11. 			parent[i] = node;
  12. 			DFS(i, g, visited, parent);
  13. 		}
  14. 	}
  15.  
  16. 	for (auto child : g[node]){
  17. 		if(child != parent[node]){
  18. 			h = max(h, height[child]);
  19. 		}
  20. 	}
  21.  
  22. 	height[node] = h+1;
  23. }
  24.  
  25. int main() {
  26.  
  27. 	int n,e;
  28. 	cin >> n >> e;
  29.  
  30. 	vector<vector<int>> g(n+5);
  31.  
  32. 	for (int i = 0; i < e; i++){
  33. 		int a, b;
  34. 		cin >> a >> b;
  35. 		g[a].push_back(b);
  36. 		g[b].push_back(a);
  37. 	}
  38.  
  39. 	int source; 
  40.     cin >> source;
  41.  
  42. 	vector<int> visited(n+5, 0);
  43. 	vector<int> parent(n+5, 0);
  44.  
  45. 	DFS(source, g, visited, parent);
  46.  
  47. 	for (int i = 1; i <= n; i++){
  48. 		cout << height[i] << " ";
  49. 	}
  50.  
  51. 	return 0;
  52. }
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin
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7 6
1 2
1 7
1 5
2 3
2 4
5 6
1
stdout
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3 2 1 1 2 1 1
https://ideone.com/XfKbSU
language:
C++14 (gcc 8.3)
created:
4 days ago
visibility:
public

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