Submission #361488

#	Time	Username	Problem	Language	Result	Execution time	Memory
361488		NachoLibre	Crayfish scrivener (IOI12_scrivener)	C++17	60 / 100	1100 ms	92484 KiB

scrivener

#include <bits/stdc++.h>
using namespace std;
#pragma comment(linker, "/stack:20000000")
#pragma GCC optimize("O3")
#pragma GCC optimize("-O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("-Ofast")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
// #pragma GCC optimize("unroll-loops")
#ifndef wambule
// #include ".h"
#else
#endif

const int L = 20;

int dg;
// in loving memory of the deceased structure
vector<pair<pair<char, int>, vector<int>>> ilm;
vector<int> v;

void Init() {
	dg = 0;
	v.clear();
	ilm.clear();
	ilm.push_back({{' ', -1}, vector<int>(L, -1)});
}

void TypeLetter(char c) {
	int x = ilm.size();
	ilm.push_back({{c, ilm[dg].first.second + 1}, vector<int>(L, -1)});
	ilm[x].second[0] = dg;
	for(int i = 1; i < L; ++i) {
		ilm[x].second[i] = ilm[x].second[i - 1];
		if(ilm[x].second[i] != -1) ilm[x].second[i] = ilm[ilm[x].second[i]].second[i - 1];
	}
	dg = x;
	v.push_back(dg);
}

void UndoCommands(int x) {
	dg = v[(int)v.size() - 1 - x];
	v.push_back(dg);
}

char GetLetter(int id) {
	int x = dg;
	for(int i = L - 1; i >= 0; --i) {
		if(ilm[x].second[i] != -1 && ilm[ilm[x].second[i]].first.second >= id) {
			x = ilm[x].second[i];
		}
	}
	#ifdef wambule
	cout << "[:] " << ilm[x].first.first << endl;
	#endif
	return ilm[x].first.first;
}

#ifdef wambule
int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	Init();
	TypeLetter('a');
	TypeLetter('b');
	GetLetter(1);
	TypeLetter('d');
	UndoCommands(2);
	UndoCommands(1);
	GetLetter(2);
	TypeLetter('e');
	UndoCommands(1);
	UndoCommands(5);
	TypeLetter('c');
	GetLetter(2);
	UndoCommands(2);
	GetLetter(2);
	return 0;
}
#endif

Compilation message (stderr)

scrivener.cpp:3: warning: ignoring #pragma comment  [-Wunknown-pragmas]
    3 | #pragma comment(linker, "/stack:20000000")
      |

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