#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
#ifdef local
#define safe cerr<<__PRETTY_FUNCTION__<<" line "<<__LINE__<<" safe\n"
#define pary(a...) danb(#a, a)
#define debug(a...) qqbx(#a, a)
template <typename ...T> void qqbx(const char *s, T ...a) {
int cnt = sizeof...(T);
((std::cerr << "\033[1;32m(" << s << ") = (") , ... , (std::cerr << a << (--cnt ? ", " : ")\033[0m\n")));
}
template <typename T> void danb(const char *s, T L, T R) {
std::cerr << "\033[1;32m[ " << s << " ] = [ ";
for (int f = 0; L != R; ++L)
std::cerr << (f++ ? ", " : "") << *L;
std::cerr << " ]\033[0m\n";
}
#else
#define debug(...) ((void)0)
#define safe ((void)0)
#define pary(...) ((void)0)
#endif // local
#define all(v) begin(v),end(v)
#define pb emplace_back
#define sort_uni(v) sort(all(v)),v.erase(unique(all(v)),v.end())
using namespace std;
using ll = long long;
using ld = long double;
template <typename T> using min_heap = priority_queue<T, vector<T>, greater<T>>;
const int mod = 1000000007;
const int inf = 1e9;
const ll INF = 1e18;
const int maxn = 100025;
int pa[maxn], sz[maxn];
int anc(int x) { return x==pa[x] ? x : pa[x]=anc(pa[x]); }
vector<int> out[maxn];
void join(int x, int y) {
x = anc(x);
y = anc(y);
if (x == y)
return;
pa[x] = y;
sz[y] += sz[x];
}
signed main() {
ios_base::sync_with_stdio(0), cin.tie(0);
int n, m;
cin >> n >> m;
for (int i = 0; i < n; i++) pa[i] = i, sz[i] = 1;
set<pair<int,int>> edges;
while (m--) {
int a, b;
cin >> a >> b;
--a, --b;
if (edges.count({ anc(b), anc(a) })) {
int x = a, y = b;
while (x != -1 && y != -1) {
join(x, y);
set<pair<int,int>> tmp;
pair<int,int> jizz(-1, -1);
for (auto [s, t]: edges) {
s = anc(s);
t = anc(t);
if (s != t) {
if (tmp.count({ t, s }))
jizz = { s, t };
tmp.insert({ s, t });
}
}
edges = tmp;
tie(x, y) = jizz;
}
}
edges.insert({ anc(a), anc(b) });
out[a].push_back(b);
ll ans = 0;
for (int i = 0; i < n; i++) {
for (int &x: out[i])
x = anc(x);
sort_uni(out[i]);
for (int x: out[i])
if (x != anc(i))
ans += sz[x];
}
for (int i = 0; i < n; i++) if (anc(i) == i) ans += 1LL * sz[i] * (sz[i] - 1);
cout << ans << '\n';
}
}
