// ΛΥΣΕΙΣ ΘΕΜΑΤΩΝ ΣΕΠΤΕΜΒΡΗ 2016

// ΘΕΜΑ 2.
#include <iostream>
#define FOR(i,start,stop) for(int i = start; i < stop; i++)
using namespace std;

void sum(int n, int a[], int b[], int c[]){	
	if (n > 0){		
		c[n-1] = a[n-1] + b[n-1];		
		n--;
		sum(n, a, b, c);		
	}	
}

void inner(int n, int a[], int b[], float &res){		
	if (n > 0) {
		res += a[n-1]*b[n-1];		
		n--;
		inner(n, a, b, res);		
	}	
}

int main(){
	int n;

	cout << "Δώσε το n\n";
	cin >> n;

	int *x = new int[n],  *y = new int[n], *z = new int[n];
	float res = 0.0;

	FOR(i,0,n) cin >> x[i];
	FOR(i,0,n) cin >> y[i];
	
	sum(n,x,y,z);

	FOR(i,0,n) cout << z[i] << "\t";
	cout << "\n";

	inner(n,x,y,res);
	cout << "inner(x,y) = " << res << endl;

	delete [] x, y, z;
	return 0;
}