import sys; input = sys.stdin.buffer.readline
sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")

def getlist():
	return list(map(int, input().split()))

def judge(table, i, j, k, l):
	if table[i][j] == 1 and table[j][k] == 1 and table[k][l] == 1 and table[l][i] == 1 and table[i][k] == 0 and table[j][l] == 0:
		return 1
	else:
		return 0

#処理内容
def main():
	N, M = getlist()
	table = [[0] * N for i in range(N)]
	for i in range(M):
		a, b = getlist()
		a -= 1; b -= 1
		table[a][b] = 1
		table[b][a] = 1

	ans = 0
	for i in range(N):
		for j in range(i + 1, N):
			for k in range(j + 1, N):
				for l in range(k + 1, N):
					ans += judge(table, i, j, k, l)
					ans += judge(table, i, j, l, k)
					ans += judge(table, i, k, j, l)
					ans += judge(table, i, k, l, j)
					ans += judge(table, i, l, j, k)
					ans += judge(table, i, l, k, j)


	print(ans // 2)


	
if __name__ == '__main__':
	main()