Submission #935859

#	Time	Username	Problem	Language	Result	Execution time	Memory
935859		PagodePaiva	Crayfish scrivener (IOI12_scrivener)	C++17	100 / 100	393 ms	227920 KiB

scrivener

#include <ext/rope>
 
int l;
__gnu_cxx::crope a[1000001];
 
void Init() { l = 0; }
void TypeLetter(char c) { l++, a[l] = a[l - 1] + c; }
void UndoCommands(int k) { l++, a[l] = a[l - k - 1]; }
char GetLetter(int k) { return a[l][k]; }

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 22 / 22
• Subtask 4: 26 / 26
• Subtask 5: 40 / 40