// yukicoder: No.488 四角関係
// 2019.6.9 bal4u

#include <stdio.h>

#if 1
#define gc() getchar_unlocked()
#else
#define gc() getchar()
#endif

int in() {   // 非負整数の入力
	int n = 0, c = gc();
	do n = 10 * n + (c & 0xf); while ((c = gc()) >= '0');
	return n;
}

int to[52][52], hi[50];
char rel[52][52];

int main()
{
	int i, j, k, N, M, a, b, c, d, ans;

	N = in(), M = in();
	while (M--) {
		a = in(), b = in();
		rel[a][b] = rel[b][a] = 1;
		to[a][hi[a]++] = b,
		to[b][hi[b]++] = a;
	}
	ans = 0;
	for (a = 0; a < N; a++) for (i = 0; i < hi[a]; i++) if ((b = to[a][i]) > a) {
		for (j = 0; j < hi[a]; j++) if ((c = to[a][j]) != b && !rel[b][c]) {
			for (k = 0; k < hi[b]; k++) if ((d = to[b][k]) != a && !rel[a][d]) {
				if (rel[c][d]) ans++;
			}
		}
	}
	printf("%d\n", ans >> 2);
	return 0;
}