- #include <iostream> 
- #include <math.h> 
- using namespace std; 
-   
- int main() 
- { 
- 	int i; 
- 	int n; 
- 	double sum=0; 
- 	cin>>n; 
- 	double a; 
-     for(i=1;i<=n;++i) 
-     { 
-     	cin>>a; 
-     	sum+=sqrt(10+a*a); 
-     } 
-     cout<<sum; 
-     return 0; 
- } 
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