N, M = map( int, input().split() )
adj = [ [ 0 for i in range( N ) ] for j in range( N ) ]
for i in range( M ):
  u, v = map( int, input().split() )
  adj[ u ][ v ] = 1
  adj[ v ][ u ] = 1
bag = set()
for i in range( N ):
  for j in range( N ):
    for k in range( N ):
      for l in range( N ):
        qq = set()
        qq.add( i )
        qq.add( j )
        qq.add( k )
        qq.add( l )
        if len( qq ) != 4: continue
        if adj[ i ][ j ] and adj[ j ][ k ] and adj[ i ][ k ]: continue
        if adj[ j ][ k ] and adj[ k ][ l ] and adj[ l ][ j ]: continue
        if adj[ i ][ k ] and adj[ k ][ l ] and adj[ l ][ i ]: continue
        if adj[ i ][ j ] and adj[ j ][ l ] and adj[ l ][ i ]: continue
        if adj[ i ][ j ] and adj[ j ][ k ] and adj[ k ][ l ] and adj[ l ][ i ]:
          f = sorted( [ i, j, k, l ] )
          bag.add( ( f[ 0 ], f[ 1 ], f[ 2 ], f[ 3 ] ) )
print( len( bag ) )