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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. vector<int> v[100];
  5. int cur_color[100];
  6. bool permit_color[100][4];
  7.  
  8. int main()
  9. {
  10. 	ios_base::sync_with_stdio(false);
  11. 	cin.tie(0);
  12.  
  13. 	//freopen("revegetate.in","r",stdin);
  14. 	//freopen("revegetate.out","w",stdout);
  15.  
  16.     int n, m;
  17.     cin>>n>>m;
  18.     while(m--)
  19.     {
  20.  
  21.     	int f, t;
  22.     	cin>>f>>t;
  23.     	--f, --t;
  24.     	v[f].push_back(t);
  25.     	v[t].push_back(f);
  26.     }
  27.     for(int par = 0; par < n; par++)
  28.     {
  29.     	for(auto child : v[par]){
  30.  
  31.     		int ch_c = cur_color[child];
  32.  
  33.     		if(ch_c == cur_color[par]){
  34.  
  35.     			permit_color[child][ch_c] = true;
  36.  
  37.     			for(int i = 0; i < 4; i++)
  38.     				if(!permit_color[child][i])
  39.     				{
  40.     					cur_color[child] = i;
  41.     					break;
  42.     				}
  43.     		}
  44.     	}
  45.     }
  46.     for(int x = 0; x < n; x++)  cout<<cur_color[x] + 1;
  47.     cout<<endl;
  48.  
  49.    return 0;
  50. }
  51.  
  52.  
Runtime error #stdin #stdout 0.01s 5356KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/DeStN9
language:
C++ (gcc 8.3)
created:
3 years ago
visibility:
public

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