Submission #1190682

#	Time	Username	Problem	Language	Result	Execution time	Memory
1190682		burgerguy	Crayfish scrivener (IOI12_scrivener)	C++20	100 / 100	431 ms	223560 KiB

scrivener

#include <bits/stdc++.h>
#include <ext/rope>

using namespace std;
using namespace __gnu_cxx;

using ll = long long;

crope commands[1000010];
ll curCommand = 0;

void Init() {

}

void TypeLetter(char L) {
    ++curCommand;
    commands[curCommand] = commands[curCommand - 1] + L;
}

void UndoCommands(int U) {
    ++curCommand;
    commands[curCommand] = commands[max(0LL, curCommand - U - 1)];
}

char GetLetter(int P) {
    return commands[curCommand][P];
}

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