#!/usr/bin/env python3

import itertools


def count_squares(n, x):
    def is_quad(a, b, c, d):
        if not all((x[a][b], x[b][c], x[c][d], x[d][a])):
            return False
        elif x[a][c] or x[b][d]:
            return False
        else:
            return True
    res = 0
    for v1, v2, v3, v4 in itertools.combinations(range(n), 4):
        if is_quad(v1, v2, v3, v4):
            res += 1
        elif is_quad(v1, v3, v2, v4):
            res += 1
        elif is_quad(v1, v3, v4, v2):
            res += 1
    return res


def main():
    n, m = (int(x) for x in input().split())
    adj_matrix = [[False for _ in range(n)] for _ in range(n)]
    for _ in range(m):
        a, b = (int(x) for x in input().split())
        adj_matrix[a][b] = True
        adj_matrix[b][a] = True
    print(count_squares(n, adj_matrix))


if __name__ == '__main__':
    main()