#include <iostream>
using namespace std;

int main() {
	int arr[20];
	int sumEven = 0;
	int sumDiv7 = 0;
	
	cout << "Enter 20 integers:\n";
	for (int i = 0; i < 20; i++) {
		cin >> arr[i];
	}
	
	for (int i = 0; i < 20; i++) {
		if (arr[i] % 2 == 0) {
			sumEven += arr[i];
		}
		
		if (arr[i] % 7 == 0) {
			sumDiv7 += arr[i];
		}
	}
	
	cout << "Sum of even elements: " << sumEven << endl;
	cout << "Sum of elements divisible by 7: " << sumDiv7 << endl;
	
	return 0;
}