Comment: Pseudocode

define gcd(a, b)
    if b > 0
        return gcd(b, a mod b)
    else
        return a

print "test"

constant N = 1000
A = []
for i from 0 to N - 1
    A[i] = i

ans = 0
for i in A
    for j in A
        ans = gcd(i, j) + ans
print ans