This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <string>
using namespace std;
string S;
void Init()
{
;
}
void TypeLetter(char L)
{
S.push_back(L);
}
void UndoCommands(int U)
{
for(int i = 0; i < U; i++) S.pop_back();
}
char GetLetter(int P)
{
return S[P];
}
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