#!/usr/bin/env python3
V, E = [int(x) for x in input().split()]

adj = [[False]*V for _ in range(V)]
for _ in range(E):
    a, b = [int(x) - 1 for x in input().split()]
    adj[a][b] = True
    adj[b][a] = True


res = 0
for i in range(V):
    for j in range(i):
        for k in range(j):
            if adj[i][j] and adj[j][k] and adj[k][i]:
                res += 1

print(res)