Submission #140235

#	Time	Username	Problem	Language	Result	Execution time	Memory
140235		bazsi700	Mechanical Doll (IOI18_doll)	C++14	0 / 100	2 ms	204 KiB

doll

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

#define MOD 1000000007
#define ll long long int
#define vi vector<int>
#define vii vector< vector<int> >
#define PI 3.1415926535897932384626433832795
#define INF 9223372036854775807LL
#define hashA 1257958787
#define hashB 1539500609
#define endl "\n"

bool was[1000005];

int getnext(int x, int cn) {
	if(x == 0) {
		return cn/2;
	}
	int ls = (x & (-x));
	int stays = ls;
	int curr = ls;
	while(x&(curr*2)) {
		stays+= curr*2;
		curr*=2;
	}
	bool did = false;
	bool was = false;
	for(int pw = 20; pw >= 0; pw--) {
		if((1<<pw) <= stays) {
			break;
		}
		if((1<<pw)+stays <= cn && (x&(1<<pw)) == 0 && was) {
			x= stays+(1<<pw);
			did = true;
			break;
		}
		if(x&(1<<pw)) {
			was = true;
		}
	}
	if(!was) {
		for(int pw = 20; pw >= 0; pw--) {
			if((1<<pw) <= ls) {
				break;
			}
			if((1<<pw)+stays <= cn && (x&(1<<pw)) == 0) {
				x= stays+(1<<pw);
				did = true;
				break;
			}
		}
	}
	if(!did) {
		x = ls/2;
	}
	return x;
}

vector<pair<int,int> > getorder(int cn) {
	vector<pair<int,int> > ord;
	int currpos = 0;
	for(int i = 0; i < cn; i++) {
		ord.push_back({currpos,0});
	//	cout << currpos << endl;
		currpos = getnext(currpos,cn);
	}
	for(int i = 0; i < cn; i++) {
		ord.push_back({ord[i].first,1});
	}
	return ord;
}

void create_circuit(int m, std::vector<int> A) {
	vector<int> C(m+1,-1);
	int n = A.size();
	int cn = 1;
	int ends = 1;
	while(2*ends < n+1) {
		cn*=2;
		cn++;
		ends*= 2;
	}
	vector<int> X (cn);
	vector<int> Y (cn);
	for(int i = 0; (i+1)*2 < cn; i++) {
		X[i] = -(i*2+2);
		Y[i] = -(i*2+3);
	}
	int ind = 0;
	vector<pair<int,int> > ord = getorder(ends);
	//cout << ends << " " << ord.size() << endl;
	for(int i = 0; i < 2*ends; i++) {
	//	cout << ord[i].first << endl;
		if(ord[i].second == 0) {
			if(ind < n) {
				X[ord[i].first+cn/2] = A[ind++];
			} else {
				X[ord[i].first+cn/2] = -1;
			}
		} else {
			if(ind < n) {
				Y[ord[i].first+cn/2] = A[ind++];
			} else {
				Y[ord[i].first+cn/2] = -1;
			}
		}
	}
	Y[cn-1] = 0;
	/*for(int i = 0; i < cn; i++) {
		cout << X[i] << " " << Y[i] << endl;
	}*/
	answer(C,X,Y);
}

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