제출 #70780

#제출 시각아이디문제언어결과실행 시간메모리
70780edisonhelloCrayfish scrivener (IOI12_scrivener)C++14
100 / 100
976 ms250312 KiB
#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-u]->end());
}
char GetLetter(int p){
    return (*rp[now])[p];
}
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