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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n,target;
  6. 	cin>>n>>target;
  7. 	vector<int> arr(n);
  8. 	for(int i=0;i<n;i++){
  9. 		cin>>arr[i];
  10. 	}
  11. 	int count=0;
  12. 	int l=0,r=n-1;
  13. 	while(l<=r){
  14. 		int mid=(l+r)/2;
  15. 		if(arr[mid]==target){
  16. 			count=1;
  17. 			break;
  18. 		}if(arr[mid]<target){
  19. 			l=mid+1;
  20. 		}else{
  21. 			r=mid-1;
  22. 		}
  23. 	}
  24. 	if(count==1){
  25. 		cout<<"True"<<endl;
  26. 	}else{
  27. 		cout<<"False"<<endl;
  28. 	}
  29. }
Success #stdin #stdout 0.01s 5280KB
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stdin
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5 19
2 19 23 35 38
stdout
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True
https://ideone.com/taFFFJ
language:
C++ (gcc 8.3)
created:
6 days ago
visibility:
public

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