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- #include<bits/stdc++.h>
- using namespace std;
- int main() {
- int t,i;
- set<string>s;
- string ss;
- char p;
- cin >> t;
- t++;
- for (i = 1; i <= t; i++) {
- getline(cin,ss);
- s.insert(ss);
- }
- cout << s.size() - 1 << endl;
- return 0;
- }
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