#include <bits/stdc++.h>
#define IOS ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define re register
using namespace std;
typedef long long ll;
int fth[20010], n, m, x, y, tx, ty, ans;
vector<int> enmy[20010];
char opt;
int fnd(int t)
{
	return (fth[t]==t?t:fth[t]=fnd(fth[t]));
}
int main()
{
	IOS;
	cin>>n>>m;
	for(int i=0; i<=2*n; i++) fth[i]=i;
	for(int i=0; i<m; i++)
	{
		cin>>opt>>x>>y;
		if(opt=='F') fth[fnd(x)]=fnd(y);
		else
		{
			fth[fnd(x+n)]=fnd(y);
			fth[fnd(y+n)]=fnd(x);
		}
	}
	for(int i=1; i<=n; i++) if(fth[i]==i) ans++;
	cout<<ans;
	return 0;
}