题解 | 字符串哈希
字符串哈希
https://www.nowcoder.com/practice/dadbd37fee7c43f0ae407db11b16b4bf
#include<bits/stdc++.h>
using namespace std;
int n;
unordered_set<string> us;
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
cin>>n;
string str;
for(int i=1;i<=n;i++){
cin>>str;
us.insert(str);
}
cout<<us.size()<<endl;
return 0;
}