Question

given a of M numbers and a postive integers N, print the sum of numbers whose position in the list is divisible by N .consider that the position of numbers range from 1 to N

INPUT:

the first line contains two-spaced integers N,M

the second line contain M space-seperated integers.

output:

print a single integer representing the requried sum

explanation:

Sample Output1

Given N=1 , M=7

and the number_list=[4,8,6,6,7,9,3]

As every position is divisible by1,

4+8+6+6+7+9+3=43

so the output should be 43

Answer 1

n, m = input().split()
n, m = int(n), int(m)
number_list = [int(i) for i in input().split()]
s = 0
for i in range(m):
    if (i+1) % n == 0:
        s += number_list[i]
print(s)