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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. typedef long long ll;
  4. int n;
  5.  
  6. bool cmp(pair<int,int> a,pair<int,int> b){
  7. 	if(a.second==b.second) return a.first<b.first;
  8. 	return a.second<b.second;
  9. }
  10. void init(){
  11. 	cin>>n;
  12. 	pair<int,int> cv[n] ;
  13. 	for(int i=0;i<n;i++){
  14. 		cin>>cv[i].first; 
  15. 	} 
  16. 		for(int i=0;i<n;i++){
  17. 		cin>>cv[i].second; 
  18. 	} 
  19. 	sort(cv,cv+n,cmp);
  20. 		int i=0;
  21. 	int cnt=1;
  22. 	for(int j=1;j<n;j++){
  23. 		if(cv[i].second<=cv[j].first){
  24. 			i=j;
  25. 			cnt++;
  26. 	}
  27. }
  28. 	cout<<cnt;
  29. } 
  30.  
  31. int main(){
  32. int t;
  33. cin>>t;
  34. while(t--){
  35. 	init();
  36.  
  37. 	cout<<endl;
  38. }
  39. return 0;
  40. }
  41.  
Success #stdin #stdout 0.07s 5288KB
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https://ideone.com/E6QOww
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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