int sum(int* left) {
	int sum_2 = 0;
	while (*left!='\0') {
		sum_2 += *left++;
	}
	return sum_2;
} 
int main() {
	int a;
	int arr[50]={0};

	scanf("%d", &a);

	for (int i = 0; i < a; i++) {
		scanf("%d", i + arr);
	}

	int sum_1 = sum(arr);

	printf("%d", sum_1);
	return 0;
}