- #include <iostream> 
- #include <cmath> 
- using namespace std; 
-   
- int main() { 
- 	int number; 
- 	double x; 
- 	cin>>x>>number; 
- 	double value; 
- 	double partial_amount=0; 
- 	int n=1; 
- 	while(n<=number){ 
- 		value=(cos((n*x))-cos(((n+1)*x)))/n; 
- 		cout<<value<<" "; 
- 		partial_amount+=value; 
- 		n++; 
- 	} 
- 	cout<<endl; 
- 	cout<<partial_amount; 
- 	return 0; 
- } 
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