from itertools import combinations
from sys import stdin, stdout
import numpy as np

input = lambda: stdin.readline().rstrip()
write = stdout.write

def main():
    N, M = map(int, input().split())
    AB = [tuple(map(int, input().split())) for _ in [0] * M]

    edge = np.zeros((N, N))
    for a, b in AB:
        edge[a][b] = edge[b][a] = 1

    square = 0
    for a, b, c, d in combinations(range(N), 4):
        if all((edge[a][b] + edge[a][c] + edge[a][d] == 2,
                edge[b][a] + edge[b][c] + edge[b][d] == 2,
                edge[c][a] + edge[c][b] + edge[c][d] == 2,
                edge[d][a] + edge[d][b] + edge[d][c] == 2)):
            square += 1
    print(square)

main()