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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. 	bool operator<(const LINE rhs)const{
  9. 		return s<rhs.s;}
  10. } line[MaxN];
  11. bool comp(LINE lhs, LINE rhs){
  12. 	return lhs.s<rhs.s;
  13. }
  14.  
  15. int main() {
  16. 	int N,s,e;
  17. 	cin>>N;
  18. 	for(int n=0;n<N;n++){
  19. 		cin>>s>>e;
  20. 		line[n]=LINE(s,e);
  21. 	}
  22. 	sort(line, line+N);
  23. 	vector<LINE> ans={line[0]};
  24. 	for(int n=1;n<N;n++){
  25. 		if(line[n].s<=ans.back().e){
  26. 			ans.back().e=max(ans.back().e,line[n].e);
  27. 		}else{
  28. 			ans.push_back(line[n]);
  29. 		}
  30. 	}
  31. 	for(LINE one: ans)
  32. 	cout<<one.s<<" "<<one.e<<"\n";
  33. 	return 0;
  34. }
Success #stdin #stdout 0.01s 5276KB
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https://ideone.com/nOr7YA
language:
C++14 (gcc 8.3)
created:
17 days ago
visibility:
public

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