Олимпиадный тренинг

Задача 7031. Sum of multiples of a


Input
The first line contains the number N (1<=N<=20) - the number of elements of a one-dimensional array. The second line contains N integers (all modulo numbers are not greater than 100). The third line is an integer a.

Imprint
Output one number - the sum of elements that are multiples of the given number a.
 
Examples
# Input Output
1 5
2 4 1 3 6
2
12
2 3
1 3 5
3
3