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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. typedef long long ll;
  5.  
  6. void solve(){
  7. 	int n;
  8. 	cin>>n;
  9.  
  10. 	int cnt = 0;
  11.  
  12.  
  13. 	vector <int> v(n);
  14. 	for(int  i = 0 ; i < n ;i++){
  15. 		cin>>v[i];
  16. 	}
  17.  
  18. 	for(int  i = 0 ; i < n-1 ;i++){
  19. 		if(v[i]%2 == 1 && v[i+1] % 2 == 1){
  20. 			cnt++;
  21. 		}
  22. 		// odd
  23. 		if(v[i]%2 ==0 && v[i+1] % 2 ==0){
  24. 			cnt++;
  25. 		}
  26. 		//even
  27. 		// if((v[i]%2 == 1 && v[i+1] % 2 == 0)|| (v[i]%2 == 0 && v[i+1] % 2 == 1)){
  28. 		// 	cnt = cnt + 0;
  29. 		// }
  30. 		// // even odd / odd even
  31. 	}
  32.  
  33.  
  34. 	cout<<cnt<<endl;
  35. }
  36.  
  37. int main() {
  38. 	int t;
  39. 	cin>>t;
  40. 	while(t--){
  41. 		solve();
  42. 	}
  43. 	return 0;
  44. }
Success #stdin #stdout 0s 5324KB
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https://ideone.com/lk4CIq
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

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