Submission #250041

#	Time	Username	Problem	Language	Result	Execution time	Memory
250041		ernestvw	Mechanical Doll (IOI18_doll)	C++11	53 / 100	152 ms	15856 KiB

doll

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

#define sz(x) ((int)x.size())

void answer(vector<int> C, vector<int> X, vector<int> Y);

int n, m;
vector<int> a;
vector<vector<int>> adj;

int p = 0;
vector<int> c, x, y;

int new_switch(int g, int d) {
	p++;
	x.push_back(g);
	y.push_back(d);
	return -p;
}

int new_switch(int g) {
	p++;
	x.push_back(-p);
	y.push_back(g);
	return -p;
}

vector<int> liste;
int PR = 1;
int mom = -1;

int build(int X, int pr) {
	if(pr == 1) {
		mom = new_switch(0, 0);
		int g = build(X, 2 * pr);
		int d = build(X + pr, 2 * pr);
		x[-mom-1] = g;
		y[-mom-1] = d;
		return mom;
	}
	if(pr == PR) return (liste[X] == -1 ? mom : liste[X]);
	int g = build(X, 2 * pr);
	int d = build(X + pr, 2 * pr);
	return new_switch(g, d);
}

int create(int t) {
	if(sz(adj[t]) == 0) return 0;
	if(sz(adj[t]) == 1) return adj[t][0];
	int pr = 1;
	while(pr < sz(adj[t])) pr *= 2;
	PR = pr;
	liste.assign(pr, -1);
	for(int i = 0; i < pr - sz(adj[t]); ++i)
		liste[i] = -1;
	for(int i = pr - sz(adj[t]); i < pr; ++i)
		liste[i] = adj[t][i - pr + sz(adj[t])];
	return build(0, 1);
}

void create_circuit(int M, vector<int> A) {
	n = (int)A.size();
	m = M;
	a = A;

	c.assign(m + 1, 0);

	adj.assign(m + 1, vector<int>());
	for(int i = 0; i < n - 1; ++i)
		adj[a[i]].push_back(a[i + 1]);
	adj[0].push_back(a[0]);
	adj[a.back()].push_back(0);
	
	for(int i = 0; i <= m; ++i)
		c[i] = create(i);

	answer(c, x, y);
}

• Subtask 1: 2 / 2
• Subtask 2: 4 / 4
• Subtask 3: 10 / 10
• Subtask 4: 0 / 10
• Subtask 5: 9.0000000036 / 18
• Subtask 6: 28.0000000112 / 56