백준 5397 키로거 c++

[문제 링크]

https://www.acmicpc.net/problem/5397

[입출력 예]

입력	출력
2 <<BP<A>>Cd- ThisIsIsS3Cr3t	BAPC ThisIsIsS3Cr3t

[소스코드]

#include <iostream>
#include <string>
#include <list>
using namespace std;

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);

    int n;
    cin>>n;
    while(n--){
        string s;
        cin>>s;
        list <char> L;
        auto cursor = L.end();
        for (auto c:s){
            if(c=='<'){
                if (cursor!=L.begin()){
                    cursor--;
                }
            }
            else if(c=='>'){
                if (cursor!=L.end()){
                    cursor++;
                }
            }
            else if (c=='-'){
                if (cursor!=L.begin()){
                    cursor--;
                    cursor=L.erase(cursor);
                }
            }
            else {
                L.insert(cursor,c);
            }
        }

        for (auto c:L){
            cout<<c;
        }
        cout<<'\n';

    }


    return 0;
}