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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. using namespace std;
  5.  
  6. #define M 1 //masculino
  7. #define F (-1) //femenino
  8. #define U 0 //no marcado
  9. #define PB push_back
  10.  
  11.  
  12. vector<int> adj[21000];
  13. short int g[21000]; //gender
  14.  
  15.  
  16. bool DFS(int r){
  17.     bool res = true;
  18.     for(int i = 0; i < adj[r].size(); i++){        
  19.         int v = adj[r][i];          
  20.         if(g[v] == g[r]){
  21.             // cout << v << " " << r << " alfas d\n";
  22.             return false;
  23.         }
  24.         if(g[v] == U){
  25.             g[v] = -g[r];
  26.             res = res and DFS(v);
  27.         }
  28.     }
  29.     return res;
  30. }
  31.  
  32.  
  33.  
  34. int main(void){
  35.  
  36.     int t = 0; cin >> t;
  37.     for(int tt = 1; tt <= t; tt++){
  38.  
  39.         int n, m; scanf("%d%d",&n,&m);
  40.         for(int i = 0; i < n; i++){
  41.             g[i] = U;
  42.             adj[i].clear();
  43.         }
  44.  
  45.         int x, y;
  46.         for( int i = 0; i < m; i++){
  47.  
  48.             scanf("%d%d",&x,&y);
  49.             adj[x].PB(y); adj[y].PB(x);
  50.         }    
  51.  
  52.         printf("Scenario #%d:\n",tt);
  53.  
  54.         bool result = true;
  55.         for(int i = 0; i < n; i++){
  56.             if(g[i] == U){
  57.                 g[i] = M;
  58.                 result = result and DFS(i);
  59.             }
  60.         }
  61.  
  62.         if(result)
  63.             printf("No suspicious bugs found!\n");
  64.         else{
  65.             printf("Suspicious bugs found!\n");
  66.             // for(int i=0;i<n;i++)    
  67.             //     cout << g[i] << ' ';
  68.             //     cout << '\n';
  69.         }
  70.     }
  71.  
  72.     return 0;
  73. }
  74.  
Success #stdin #stdout 0s 4272KB
comments (?)
stdin
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stdout
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Scenario #1:
No suspicious bugs found!
Scenario #2:
Suspicious bugs found!
Scenario #3:
No suspicious bugs found!
Scenario #4:
Suspicious bugs found!
https://ideone.com/RvRPc4
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4 4
1 2
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3 1
2 4
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
secret

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