Submission #1003441

#	Time	Username	Problem	Language	Result	Execution time	Memory
1003441		Ausp3x	Crayfish scrivener (IOI12_scrivener)	C++17	34 / 100	113 ms	262144 KiB

scrivener

// 人外有人，天外有天
// author: Ausp3x

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

typedef long long             lng;
typedef unsigned int          uint;
typedef unsigned long long    ulng;
using namespace std;
using namespace __gnu_pbds;

int const INF32 = 0x3f3f3f3f;
lng const INF64 = 0x3f3f3f3f3f3f3f3f;

vector<string> history(1);

void Init() {
    
    return;
}

void TypeLetter(char l) {
    string res = history.back();
    res += l;
    history.push_back(res);

    return;
}

void UndoCommands(int u) {
    history.push_back(history[history.size() - u - 1]);

    return;
}

char GetLetter(int p) {
    return history.back()[p];
}

/*
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    Init();
    TypeLetter('a');
    TypeLetter('b');
    cout << GetLetter(1) << endl;
    TypeLetter('d');
    UndoCommands(2);
    UndoCommands(1);
    cout << GetLetter(2) << endl;
    TypeLetter('e');
    UndoCommands(1);
    UndoCommands(5);
    TypeLetter('c');
    cout << GetLetter(2) << endl;
    UndoCommands(2);
    cout << GetLetter(2) << endl;

    return 0;
}
//*/

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