P3370 【模板】字符串哈希

#include 
using namespace std;
set se;
int main()
{
    int n;
    cin >> n;
    for(int i = 1;i <= n;i++)
    {
        string s;
        cin >> s;
        se.insert(s);
    }
    cout << se.size() << endl;
    return 0;
}