#include<bits/stdc++.h>
using namespace std;
std::vector<int> Instructions;
void Init(){
return;
}
void TypeLetter(char L){
Instructions.push_back(L);
}
void UndoCommands(int U){
Instructions.push_back(-U);
}
char GetLetter(int P){
vector<char> TextInReverse;
for(int i=Instructions.size()-1;i>-1;i--){
if(Instructions[i]<0){
i+=Instructions[i];
}
else{
TextInReverse.push_back((char)Instructions[i]);
}
}
return TextInReverse[TextInReverse.size()-P-1];
}
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