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  1. #include<iostream>
  2. #include<algorithm>
  3. using namespace std;
  4. long long int a[10000000];
  5. int main()
  6.  {
  7.  	ios::sync_with_stdio(false);
  8.  	long long int n,sum=0;
  9.  	long long int i,j,key;
  10.  	cin>>n;
  11.  	for(i=0;i<n;i++)
  12.  	cin>>a[i];
  13.  /*	for(i=1;i<n;i++)
  14.  	{
  15.  	 j=i-1;
  16. 	 key=a[i];
  17. 	  while(j>=0&&a[j]<key)
  18. 	     {
  19. 	      a[j+1]=a[j];
  20. 		  j--;	
  21. 		 }	
  22. 		 a[j+1]=key;
  23. 	 }*/
  24. 	 sort(a,a+n,greater<int>());
  25. 	 for(i=0;i<n;i++)
  26. 	 {
  27. 	 sum=sum+a[i];	
  28. 	 }
  29. 	 if(sum%2==0)
  30. 	 cout<<sum;
  31. 	 else
  32. 	 {
  33. 	 	while(sum%2!=0)
  34. 	 	  { 
  35. 	 	   i=n-1;
  36. 	 	   sum=sum-a[i];
  37. 		   i--;
  38. 		   if(i<0)
  39. 		   break;  	
  40. 		  }
  41. 		  cout<<sum;
  42. 	 }
  43. 	 return 0;
  44.  }
Success #stdin #stdout 0s 81600KB
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https://ideone.com/OWI8Ba
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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