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5430.cpp
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5430.cpp
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// Authored by : BaaaaaaaaaaarkingDog
// Co-authored by : -
// http://boj.kr/e93d3fd7a3bc43179af06505c3f524b0
#include <bits/stdc++.h>
using namespace std;
void parse(string& tmp, deque<int>& d){
int cur = 0;
for(int i = 1; i+1 < tmp.size(); i++)
{
if(tmp[i] == ','){
d.push_back(cur);
cur = 0;
}
else{
cur = 10 * cur + (tmp[i] - '0');
}
}
if(cur != 0)
d.push_back(cur);
}
void print_result(deque<int>& d){
cout << '[';
for(int i = 0; i < d.size(); i++)
{
cout << d[i];
if(i+1 != d.size())
cout << ',';
}
cout << "]\n";
}
int t;
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cin >> t;
while(t--){
deque<int> d;
int rev = 0;
int n;
bool isWrong = false;
string query, tmp;
cin >> query;
cin >> n;
cin >> tmp;
parse(tmp, d);
for(char c : query)
{
if(c == 'R')
rev = 1 - rev;
else{
if(d.empty()){
isWrong = true;
break;
}
if(!rev) d.pop_front();
else d.pop_back();
}
}
if(isWrong)
cout << "error\n";
else{
if(rev) reverse(d.begin(), d.end());
print_result(d);
}
}
}