import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int m = sc.nextInt();
        ArrayList<HashSet<Integer>> graph = new ArrayList<>();
        for (int i = 0; i < n; i++) {
            graph.add(new HashSet<>());
        }
        for (int i = 0; i < m; i++) {
            int a = sc.nextInt() - 1;
            int b = sc.nextInt() - 1;
            graph.get(a).add(b);
            graph.get(b).add(a);
        }
        boolean[][] isBad = new boolean[n][n];
        for (int i = 0; i < n; i++) {
            for (int x : graph.get(i)) {
                for (int y : graph.get(i)) {
                    if (x >= y) {
                        continue;
                    }
                    if (!graph.get(x).contains(y)) {
                        isBad[x][y] = true;
                    }
                }
            }
        }
        int count = 0;
        for (int i = 0; i < n; i++) {
            for (int j = i + 1; j < n; j++) {
                if (isBad[i][j]) {
                    continue;
                }
                for (int k = j + 1; k < n; k++) {
                    if (isBad[i][k] || isBad[j][k]) {
                        continue;
                    }
                    count++;
                }
            }
        }
        System.out.println(count);
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
    
}