제출 #1232989

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1232989		yixuan19	크레이피쉬 글쓰는 기계 (IOI12_scrivener)	C++20	0 / 100	61 ms	4540 KiB

scrivener

#include <iostream>
#include <vector>

using namespace std;

vector<int> commands;
void Init() {
 //cout<<"init done"<<endl;
}


void TypeLetter(char L) {
  commands.push_back(int(L));
  //cout<<"letter added"<<endl;
}

void UndoCommands(int U) {
  commands.push_back(-U);
  //cout<<U<<" commands undone"<<endl;
}

bool first = true;
vector<char>text;
char GetLetter(int P) {
  if (first){
    // for (int i: commands){
    //   cout<<i<<' ';
    // }
    // cout<<endl;
    first = false;
    int i = commands.size()-1;
    while (i > 0){
      if (commands[i] < 0){
        for (int j = 0; j <= -commands[i]; ++j){
          commands.pop_back();
        }
        i = commands.size()-1;
      }else{
        i--;
      }
    }
    // for (int i: commands){
    //   cout<<i<<' ';
    // }
    // cout<<endl;
    for (int i: commands){
      text.push_back((char)i);
    }
  }
  return text[P];
}

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