Submission #759608

#	Time	Username	Problem	Language	Result	Execution time	Memory
759608		aykhn	Crayfish scrivener (IOI12_scrivener)	C++14	0 / 100	184 ms	262144 KiB

scrivener

#include <bits/stdc++.h>
 
// author: aykhn

using namespace std;

#define mpr make_pair
#define pb push_back
#define fi first
#define se second

string s;
vector<pair<int, char>> calls;
int x;

string f(int i)
{
    if (i < 0) return "";
    
    if (calls[i].fi == 1) return f(i - 1) + calls[i].se;
    
    return f(i - 1 - calls[i].se);
}

void Init() 
{
    s = "";
}

void TypeLetter(char L) 
{
    calls.pb(mpr(1, L));
}

void UndoCommands(int U) 
{
    calls.pb(mpr(2, U));
}

char GetLetter(int P) 
{
    x++;
    if (x == 1)
    {
        s = f(calls.size() - 1);
    }
    
    return s[P];
}

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