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  1. #include <iostream>
  2. #include <bits/stdc++.h>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	// your code goes here
  7.  
  8. 	vector<int> arr = {3,6,2,3,5};
  9.  
  10. 	int fr=0, sc=0;
  11.  
  12. 	bool ch1 = true;
  13. 	bool rev=false;
  14. 	int n = arr.size();
  15.  
  16. 	int i=n-1, j=0;
  17.  
  18. 	while(j<=i){
  19.  
  20. 		if(ch1){
  21. 			if(rev){
  22. 				fr+=arr[i];
  23. 				if(arr[i]%2==0) rev=!rev;
  24. 				i--;
  25. 			}
  26. 			else{
  27. 				fr+=arr[j];
  28. 				if(arr[j]%2==0) rev=!rev;
  29. 				j++;
  30. 			}
  31. 		}
  32. 		else{
  33. 			if(rev){
  34. 				sc+=arr[i];
  35. 				if(arr[i]%2==0) rev=!rev;
  36. 				i--;
  37. 			}
  38. 			else{
  39. 				sc+=arr[j];
  40. 				if(arr[j]%2==0) rev=!rev;
  41. 				j++;
  42. 			}
  43. 		}
  44.  
  45.  
  46. 		ch1 = !ch1;
  47. 	}
  48.  
  49. 	cout<< fr-sc;
  50. 	return 0;
  51. }
Success #stdin #stdout 0s 5316KB
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https://ideone.com/cHW2Ad
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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