#include "bits/stdc++.h"
using namespace std;

int unidp[100];

int findunidp(int a){
	if (unidp[a] < 0) return a;
	else return unidp[a] = findunidp(unidp[a]);
}

bool connect(int a, int b){
	a = findunidp(a);
	b = findunidp(b);
	if (a == b) return false;
	unidp[a] += unidp[b];
	unidp[b] = a;
	return true;
}

long long gcd(long long a, long long b){
	if (b == 0) return a;
	return gcd(b, a%b);
}


int main(){
	int N, K;
	cin >> N >> K;
	vector<int> V(N);
	for (int i = 0; i < N; i++)
	{
		V[i] = i;
		unidp[i] = -1;
	}
	for (int i = 0; i < K; i++)
	{
		int X, Y;
		cin >> X >> Y;
		swap(V[X - 1], V[Y - 1]);
	}
	for (int i = 0; i < N; i++)
	{
		connect(i, V[i]);
	}
	long long ans = 1;
	for (int i = 0; i < N; i++)
	{
		long long loop = -unidp[findunidp(i)];
		auto g = gcd(loop, ans);
		ans *= loop;
		ans /= g;
	}
	cout << ans << endl;
}