Submission #417022

#	Time	Username	Problem	Language	Result	Execution time	Memory
417022		Emin2004	Crayfish scrivener (IOI12_scrivener)	C++14	34 / 100	139 ms	262148 KiB

scrivener

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

#define ll long long
#define pb push_back
#define pii pair<int, int>
#define F first
#define S second

const int N = 1000005;
const int mod = 1e9+7;

string s = "";
int m = 0;

map<int, string> mp;

void Init() {}

void TypeLetter(char L) {
    s += L;
    mp[m] = s;
    m++;
}

void UndoCommands(int U) {
    s = mp[m - 1 - U];
    mp[m] = s;
    m++;
}

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

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