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  1. ////***************Copy Right 2021 < BUNNY />  *********************////
  2. //////************* ولسوف يعطيك ربك فترضي *****************/
  3. // Sometimes, the questions are complicated - and the answers are simple. //
  4. ///////*********************** (ACPC Next Year) *************************////
  5. #include <bits/stdc++.h>
  6.  
  7. using namespace std;
  8. typedef long long ll;
  9. #define f first
  10. #define s second
  11. #define Ya_Rab_Accepted ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
  12.  
  13. void LoL_Code_Bela_Hadaf_() {
  14. #ifndef ONLINE_JUDGE
  15.     freopen("in.txt", "r", stdin);
  16.     freopen("out.txt", "w", stdout);
  17. #endif
  18. }
  19.  
  20. int MOD = 1e9 + 7;
  21. const long long INF = 1e18, N = 1e6+100;
  22. int dx[] = {1, -1, 0, 0, 1, 1, -1, -1};
  23. int dy[] = {0, 0, 1, -1, 1, -1, 1, -1};
  24. vector<int>adj[N];
  25. int color[N];
  26. void dfs(int node){
  27.     for(auto child : adj[node]){
  28.         if(color[child] == -1){
  29.             color[child] = !color[node];
  30.             dfs(child);
  31.         }
  32.     }
  33. }
  34.  
  35. int main() {
  36.     Ya_Rab_Accepted
  37.     LoL_Code_Bela_Hadaf_();
  38.  
  39.  
  40.     int t, tc = 0;  cin>>t;
  41.  
  42.     while(t--){
  43.         tc++;
  44.         memset(color, -1, sizeof color);
  45.         for(auto i : adj)
  46.             i.clear();
  47.         int n, m;
  48.         cin>>n>>m;
  49.         vector<pair<int, int>>edges(m+1);
  50.         for(int i = 0;i<m;i++){
  51.             int x, y;
  52.             cin>>x>>y;
  53.             adj[x].push_back(y);
  54.             adj[y].push_back(x);
  55.             edges.push_back({x, y});
  56.         }
  57.         for(int i = 1;i<=n;i++){
  58.             if(color[i] == -1){
  59.                 dfs(i);
  60.             }
  61.         }
  62.  
  63.  
  64.  
  65.         bool flag = false;
  66.         for(auto i : edges){
  67.             flag |= (color[i.f] == color[i.s]);
  68.         }
  69.  
  70.         cout<<"Scenario #"<<tc<<":\n";
  71.         if(flag)
  72.             cout<<"Suspicious bugs found!\n";
  73.         else
  74.             cout<<"No suspicious bugs found!\n";
  75.  
  76.     }
  77.  
  78.  
  79.  
  80.  
  81.     return 0;
  82.  
  83. }
Runtime error #stdin #stdout 0.01s 30752KB
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Standard input is empty
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Standard output is empty
https://ideone.com/dAJvjA
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
public

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