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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. const int MaxN=2e5;
  5. struct LINE{
  6. 	int s,e;
  7. 	LINE(int s=0, int e=0):s(s),e(e){}
  8. }line[MaxN];
  9.  
  10. bool comp(LINE lhs, LINE rhs){
  11. 	return lhs.s<rhs.s;
  12. }
  13. int main() {
  14. 	int N,s,e;
  15. 	cin>>N;
  16. 	for(int n=0;n<N;n++){
  17. 		cin>>s>>e;
  18. 		line[n]=LINE(s,e);
  19. 	}
  20. 	sort(line,line+N,comp);
  21. 	vector<LINE> ans={line[0]};
  22. 	for(int n=1;n<N;n++){
  23. 		if(line[n].s<=ans.back().e){
  24. 			ans.back().e=max(ans.back().e,line[n].e);
  25. 		}else{
  26. 			ans.push_back(line[n]);
  27. 		}
  28. 	}
  29.  
  30. 	for(LINE one:ans)
  31. 		cout<<one.s<<" "<<one.e<<"\n";
  32. 	return 0;
  33. }
Success #stdin #stdout 0.01s 5296KB
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https://ideone.com/Xf7vPI
language:
C++14 (gcc 8.3)
created:
17 days ago
visibility:
public

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