Submission #70787

#	Time	Username	Problem	Language	Result	Execution time	Memory
70787		edisonhello	Crayfish scrivener (IOI12_scrivener)	C++14	100 / 100	941 ms	224268 KiB

scrivener

#include<ext/rope>
__gnu_cxx::crope r[1<<20];int x;void Init(){}void TypeLetter(char c){++x;r[x]=r[x-1];r[x].push_back(c);}void UndoCommands(int u){++x;r[x]=r[x-u-1];}char GetLetter(int p){return r[x][p];}

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