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  1. #include <bits/stdc++.h> 
  2.  
  3. using namespace std;  
  4.  
  5. typedef long long ll;  
  6. typedef pair<int, int> ii;  
  7.  
  8. const int INF = 1e9;  
  9. const ll LINF = 1e18;  
  10.  
  11. const int N = 3e5 + 5; 
  12.  
  13. int n, m; 
  14.  
  15. int nxt[N]; 
  16.  
  17. void init() {
  18. 	for (int u = 1; u <= n + 1; u++) nxt[u] = u;  
  19. }
  20.  
  21. // Tìm v gần bên phải u nhất (tính cả u) sao cho v chưa bị đánh dấu
  22. int findNext(int u) {
  23. 	if (nxt[u] == u) return u;   
  24. 	return nxt[u] = findNext(nxt[u]); 
  25. }
  26.  
  27. int ans[N]; 
  28.  
  29. int main() {
  30. 	ios::sync_with_stdio(false); 
  31. 	cin.tie(nullptr); 	
  32. 	cin >> n >> m; 
  33.  
  34. 	init();   
  35.  
  36. 	for (int i = 1; i <= m; i++) {
  37. 		int l, r, x;
  38. 		cin >> l >> r >> x;   
  39.  
  40. 		for (int i = findNext(l); i < x; i = findNext(i + 1)) {
  41. 			ans[i] = x;
  42. 			nxt[i] = findNext(i + 1);  
  43. 		} 
  44.  
  45. 		for (int i = findNext(x + 1); i <= r; i = findNext(i + 1)) {
  46. 			ans[i] = x; 
  47. 			nxt[i] = findNext(i + 1); 
  48. 		}
  49. 	}
  50.  
  51. 	for (int i = 1; i <= n; i++) {
  52. 		cout << ans[i] << " \n"[i == n]; 
  53. 	}
  54. }
Success #stdin #stdout 0.01s 5696KB
comments (?)
stdin 
4 3
1 2 1
1 3 3
1 4 4
stdout 
3 1 4 0
https://ideone.com/Y5D4bc
language:
C++14 (gcc 8.3)
created:
312 days ago
visibility:
secret

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