Submission #70779

#	Time	Username	Problem	Language	Result	Execution time	Memory
70779		edisonhello	Crayfish scrivener (IOI12_scrivener)	C++14	12 / 100	1112 ms	263168 KiB

scrivener

#include<bits/stdc++.h>
using namespace std;
#include<ext/rope>
using namespace __gnu_cxx;

rope<char> *rp[1000006];
int now=0;

void Init(){
    rp[0]=new rope<char>();
}
void TypeLetter(char c){
    ++now;
    rp[now]=new rope<char>(rp[now-1]->begin(),rp[now-1]->end());
    rp[now]->push_back(c);
}
void UndoCommands(int u){
    ++now;
    rp[now]=new rope<char>(rp[now-1-u]->begin(),rp[now-1]->end());
}
char GetLetter(int p){
    return (*rp[now])[p];
}

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 0 / 22
• Subtask 4: 0 / 26
• Subtask 5: 0 / 40