PAT乙级1093

#include<iostream>
#include<string>
using namespace std;
int main(){
    string a,b,s;
    getline(cin,a);
    getline(cin,b);
    int hash[1000]{0};
    s=a+b;
    for(int i=0;i<s.size();i++){
        if(hash[s[i]]==0)cout<<s[i];
        hash[s[i]]=1;
    }
    return 0;
}

标签：std,PAT,1093,int,cin,乙级,hash,include,getline
来源： https://blog.csdn.net/weixin_51928751/article/details/120962908