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  1. #include<iostream>
  2. #include<vector>
  3. #include<algorithm>
  4. #define pp pair<int,int>
  5. using namespace std;
  6. bool cmp(const pp &l,const pp &r)
  7. {
  8. 	return l.first<r.first;
  9. }
  10. int main()
  11. {
  12. 	vector<pp> v;
  13. 	v.push_back(pp(5,1));
  14. 	v.push_back(pp(4,2));
  15. 	v.push_back(pp(5,3));
  16. 	v.push_back(pp(2,4));
  17. 	sort(v.begin(),v.end(),cmp);
  18.    int id=(int)(lower_bound(v.begin(),v.end(),pp(5,0),cmp)-v.begin());
  19.    cout<<id<<endl;
  20. }
Success #stdin #stdout 0s 2864KB
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stdin 
Standard input is empty
stdout 
2
https://ideone.com/M0PZPL
language:
C++ 4.3.2 (gcc-4.3.2)
created:
12 years ago
visibility:
secret

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