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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4.  
  5. int main() {
  6.    int n , k , a[10001] , s[10001] ;
  7.    cin >> n >> k ;
  8.  
  9.    long long sum = 0 , sum1 = 0;
  10.    for(int i = 0 ; i< n ; i++)
  11.    {
  12.    	cin >> a[i] ;
  13.    }
  14.  int c = 0;
  15.   while(k--)
  16.   {
  17.   	cin >> s[c];
  18.   	abs(sum -=s[c]);
  19.     c++;
  20.   }
  21.  
  22. for(int i = a[sum] ; i<n ; i++)
  23. {
  24. 	if(i >= 0 && i<n-1)
  25. 	{
  26. 	sum1+=a[i];
  27. 	}
  28. 	else{
  29. 		for(int j = a[sum] ; j > 0 ; j--)
  30. 		{
  31.  
  32. 			sum1+=a[j];
  33. 		}
  34.  
  35.  
  36.  
  37.  
  38. 	}
  39.  
  40. 	cout << sum1 << "\n";
  41.  
  42.  
  43. }
  44.  
  45.  
  46.  
  47.  
  48.  
  49. 	return 0;
  50. }
Success #stdin #stdout 0s 15240KB
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https://ideone.com/EkEZFh
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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