import sys
import random
from collections import defaultdict

def main():
    input = sys.stdin.read().split()
    n = int(input[0])
    a = list(map(int, input[1:n+1]))
    
    max_prime = 10**6
    spf = list(range(max_prime + 1))
    for i in range(2, int(max_prime**0.5) + 1):
        if spf[i] == i:
            for j in range(i*i, max_prime+1, i):
                if spf[j] == j:
                    spf[j] = i
    
    # Generate primes and their hash values
    primes = set()
    for i in range(2, max_prime + 1):
        if spf[i] == i:
            primes.add(i)
    
    # Assign random 64-bit hashes to primes
    prime_hash = {}
    for p in primes:
        prime_hash[p] = random.getrandbits(64)
    
    current_hash = 0
    counter = defaultdict(int)
    counter[current_hash] = 1
    answer = 0
    
    for num in a:
        temp = num
        delta = set()
        while temp > 1:
            p = spf[temp]
            cnt = 0
            while temp % p == 0:
                cnt += 1
                temp = temp // p
            if cnt % 2 == 1:
                if p in delta:
                    delta.remove(p)
                else:
                    delta.add(p)
        # Compute delta_hash
        delta_hash = 0
        for p in delta:
            delta_hash ^= prime_hash[p]
        current_hash ^= delta_hash
        answer += counter.get(current_hash, 0)
        counter[current_hash] += 1
    
    print(answer)

if __name__ == "__main__":
    main()