from itertools import permutations

N, M = map(int, input().split())

X = [[0] * N for i in range(N)]

for i in range(M):
    
    a, b = map(int, input().split())
    
    X[a][b] = 1
    X[b][a] = 1
ans = 0
    
for i, j, k, l in permutations(range(N), r=4):
    
    if X[i][j] and X[j][k] and X[k][l] and X[l][i] and (not X[i][k]) and (not X[j][l]):
        
        ans += 1
        
print(ans // 8)