#include <iostream>

using namespace std;

const int N = 1e5 + 5, base1 = 2330, base2 = 2033, Mod = 2011003;

struct mep{
	int x, y;
};

int n, ans;
string a;
bool v[N][N];

mep function1(string x){
	int ret1 = 0, ret2 = 0;
	for(int first = 0; first < x.size(); ++first){
		ret1 = ret1 * base1 + x[first];
		ret1 %= Mod;
	}
	for(int first = 0; first < x.size(); ++first){
		ret2 = ret2 * base2 + x[first];
		ret2 %= Mod;
	}
	mep u = {ret1, ret2};
	return u;
}

int main(){
	cin >> n;
	for(int first = 1; first <= n; ++first){
		cin >> a;
		mep hs = function1(a);
		ans += !v[hs.x][hs.y];
		v[hs.x][hs.y] = 1;
	}
	cout << ans;
	return 0;
}

为啥CE，但DEV-CPP能运行