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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;//start end
  7. 	LINE(int s=0,int e=0):s(s),e(e){}
  8. }line[MaxN];
  9. bool comp(LINE lhs,LINE rhs){
  10. 	return lhs.s<rhs.s;
  11. }
  12. int main() {
  13. 	int N,s,e;
  14. 	cin>>N;
  15. 	for(int n=0;n<N;n++){
  16. 		cin>>s>>e;
  17. 		line[n]=LINE(s,e);
  18. 	}
  19. 	sort(line,line+N,comp);
  20. 	vector<LINE> ans={ line[0] };
  21. 	for(int n=1;n<N;n++){
  22. 		if(line[n].s<=ans.back().e){
  23. 			ans.back().e=max(ans.back().e,line[n].e);
  24. 		}else{
  25. 			ans.push_back(line[n]);
  26. 		}
  27. 	}
  28. 	//output
  29. 	for( LINE one: ans)
  30. 	  cout<<one.s<<" "<<one.e<<endl;
  31. }
Success #stdin #stdout 0s 5316KB
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https://ideone.com/R6Lfb8
language:
C++ (gcc 8.3)
created:
17 days ago
visibility:
public

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