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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. const int maxn = 2e5 +5;
  4. int ans[maxn];
  5. vector <int> v[maxn];
  6. vector < pair<int, int> > a;
  7. bool u[maxn];
  8.  
  9. int main(){
  10. 	ios_base::sync_with_stdio(0);
  11. 	cin.tie(0);cout.tie(0);
  12.  
  13. 	int n;
  14. 	cin>>n;
  15.  
  16. 	int l, r;
  17. 	for(int i=1; i<=n; i++){
  18. 		cin>>l>>r;
  19.  
  20. 		if(l==r){
  21. 			u[l] = 1;
  22. 			ans[l] = i;
  23. 		}
  24.  
  25. 		for(int j=l; j<=r; j++){
  26. 			v[i].push_back(j);
  27. 		}
  28.  
  29. 		a.push_back(make_pair(v[i].size(), i));
  30. 	}
  31.  
  32. 	sort(a.begin(), a.end());
  33.  
  34. 	for(int i=0; i<n; i++){
  35. 		int cnt = a[i].first;
  36. 		int val = a[i].second;
  37.  
  38. 		for(int j=0; j<v[val].size(); j++){
  39. 			int id = v[val][j];
  40.  
  41. 			if(!u[id]){
  42. 				ans[id] = val;
  43. 				u[id] = 1;
  44. 				break;
  45. 			}
  46. 		}
  47.  
  48. 	}
  49. 	bool ok = 0;
  50.  
  51. 	for(int i=1; i<=n; i++){
  52. 		if(!u[i]){
  53. 			ok = 1;
  54. 			break;
  55. 		}
  56. 	}
  57.  
  58. 	if(ok){
  59. 		cout<<-1;
  60. 		return 0;
  61. 	}
  62.  
  63. 	for(int i=1; i<=n; i++){
  64. 		cout<<ans[i]<<' ';
  65. 	}
  66. }
Success #stdin #stdout 0.01s 8352KB
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https://ideone.com/OdenR0
language:
C++14 (gcc 8.3)
created:
330 days ago
visibility:
secret

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