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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define int              long long int
  4. #define double           long double
  5. inline int power(int a, int b) {
  6.     int x = 1;
  7.     while (b) {
  8.         if (b & 1) x *= a;
  9.         a *= a;
  10.         b >>= 1;
  11.     }
  12.     return x;
  13. }
  14.  
  15.  
  16. const int M = 1000000007;
  17. const int N = 3e5+9;
  18. const int INF = 2e9+1;
  19. const int LINF = 2000000000000000001;
  20.  
  21. //_ ***************************** START Below *******************************
  22.  
  23.  
  24.  
  25.  
  26. vector<vector<int>> a;
  27. void  consistency(int n) {
  28.  
  29.     map<int,int> events;
  30.  
  31.     for(int i=0; i<n; i++){
  32.     	int s = a[i][0];
  33.     	int e = a[i][1];
  34.  
  35.     	events[s]++;
  36.     	events[e]--;
  37.     }
  38.  
  39.     int acc = 0;
  40.     int last = -1;
  41.     vector<vector<int>> ans;
  42.     for(auto& e : events){
  43.     	if(acc == 0){
  44.     		last = e.first;
  45.     	}
  46.     	acc += e.second;
  47.     	if(acc == 0){
  48.     		if(last != -1) ans.push_back({last, e.first});
  49.     	}
  50.     }
  51.  
  52.     for(int i=0; i<ans.size(); i++){
  53.     	cout << ans[i][0] << ":" << ans[i][1] << " , ";
  54.     }
  55.  
  56. }
  57.  
  58. void solve() {
  59.  
  60. 	int n;
  61. 	cin >> n;
  62.  
  63. 	a.resize(n);
  64. 	for(int i=0; i<n; i++){
  65. 		int x, y;
  66. 		cin >> x >> y;
  67. 		a[i] = {x,y};
  68. 	}
  69.  
  70. 	consistency(n);
  71.  
  72. }
  73.  
  74.  
  75.  
  76.  
  77.  
  78. int32_t main() {
  79.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  80.  
  81.     int t = 1;
  82.     cin >> t;
  83.     while (t--) {
  84.         solve();
  85.     }
  86.  
  87.     return 0;
  88. }
Success #stdin #stdout 0.01s 5276KB
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https://ideone.com/VrrqCb
language:
C++14 (gcc 8.3)
created:
5 hours ago
visibility:
public

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