Submission #379421

#	Time	Username	Problem	Language	Result	Execution time	Memory
379421		autumn_eel	Mechanical Doll (IOI18_doll)	C++14	0 / 100	1 ms	204 KiB

doll

#include "doll.h"
#include <bits/stdc++.h>
#define rep(i,n)for(int i=0;i<int(n);i++)
using namespace std;

static vector<int>rec(vector<int>&v){
	if(v.size()==2)return v;
	vector<int>a,b;
	rep(i,v.size()){
		if(i%2==0)a.push_back(v[i]);
		else b.push_back(v[i]);
	}
	a=rec(a);
	b=rec(b);
	for(int i:b)a.push_back(i);
	return a;
}

void create_circuit(int M, std::vector<int> A) {
	A.push_back(0);
	int N = A.size();
	
	int n=2;while(n<N)n<<=1;
	n>>=1;

	vector<int>C(M+1);
	vector<int>X(2*n-1),Y(2*n-1);

	X=vector<int>();
	Y=vector<int>();

	C[0]=A[0];
	rep(i,A.size()-1){
		C[A[i]]=C[A[i+1]];
	}
	answer(C,X,Y);
	return;

	vector<int>idx(2*n);
	rep(i,2*n)idx[i]=i;

	idx=rec(idx);

	for(int i=1;i<=2*n-1;i++){
		if(i<=n-1){
			X[i-1]=-(i*2);
			Y[i-1]=-(i*2+1);
		}
		else{
			int d=i-n;
			int l=idx[2*d],r=idx[2*d+1];
			if(l<N-1||l==2*n-1){
				X[i-1]=A[l<N-1?l:N-1];
			}
			else X[i-1]=-1;
			
			if(r<N-1||r==2*n-1){
				Y[i-1]=A[r<N-1?r:N-1];
			}
			else Y[i-1]=-1;
		}
	}
	
	rep(i,M+1)C[i]=-1;

	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