Submission #921536

#	Time	Username	Problem	Language	Result	Execution time	Memory
921536		Alihan_8	Crayfish scrivener (IOI12_scrivener)	C++17	34 / 100	1032 ms	229564 KiB

scrivener

#include <bits/stdc++.h>

using namespace std;

#define all(x) x.begin(), x.end()
#define ar array
#define pb push_back
#define ln '\n'
//#define int long long

using i64 = long long;

template <class F, class _S>
bool chmin(F &u, const _S &v){
    bool flag = false;
    if ( u > v ){
        u = v; flag |= true;
    }
    return flag;
}

template <class F, class _S>
bool chmax(F &u, const _S &v){
    bool flag = false;
    if ( u < v ){
        u = v; flag |= true;
    }
    return flag;
}

vector <vector<int>> a, s;

vector <int> def;

vector <char> t;

void Init() {
    def.resize(21);
    a.pb(def), s.pb(def);
    t.pb('#');
}

void TypeLetter(char L) {
    int i = (int)a.size();
    a.pb(def), s.pb(def);
    a[i][0] = i - 1;
    s[i][0] = 1;
    for ( int j = 1; j <= 20; j++ ){
        a[i][j] = a[a[i][j - 1]][j - 1];
        s[i][j] = s[a[i][j - 1]][j - 1] + s[i][j - 1];
    } t.pb(L);
}

void UndoCommands(int U) {
    int i = (int)a.size();
    a.pb(def), s.pb(def);
    a[i][0] = i - U - 1;
    for ( int j = 1; j <= 20; j++ ){
        a[i][j] = a[a[i][j - 1]][j - 1];
        s[i][j] = s[a[i][j - 1]][j - 1] + s[i][j - 1];
    } t.pb('-');
}

char GetLetter(int P) {
    int i = (int)a.size() - 1;
    int tot = s[i][20] - 1;
    for ( int j = 20; j >= 0; j-- ){
        if ( tot - s[i][j] >= P ){
            tot -= s[i][j];
            i = a[i][j];
        }
    }
    return t[i];
}

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