제출 #759077

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
759077		alexander707070	자동 인형 (IOI18_doll)	C++14	37 / 100	71 ms	13420 KiB

doll

#include<bits/stdc++.h>
#include "doll.h"
#define MAXN 800007
using namespace std;

int m,power,n;
int a[MAXN],s;
int lt[MAXN],rt[MAXN];
vector<int> from,to,c;

int rev(int x){
    int res=0;
    for(int i=1;i<power;i*=2){
        res*=2; res+=x%2; 
        x/=2;
    }
    return res;
}

void build(int v,int l,int r,int num){
    if(l+1==r){
        num*=2;
        if(rev(num)<n)lt[v]=a[rev(num)];
        else if(rev(num)==power-1)lt[v]=0;
        else lt[v]=-1;

        num++;
        if(rev(num)<n)rt[v]=a[rev(num)];
        else if(rev(num)==power-1)rt[v]=0;
        else rt[v]=-1;
    }else{
        int tt=(l+r)/2;
        build(2*v,l,tt,2*num);
        build(2*v+1,tt+1,r,2*num+1);

        lt[v]=-2*v; rt[v]=-2*v-1;
    }
}

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

    for(int i=0;i<n;i++){
        a[i]=A[i];
    }
    
    power=1;
    while(power<n+1)power*=2;
    build(1,0,power-1,0);

    for(int i=0;i<=m;i++)c.push_back(-1);

    for(int i=1;i<=power-1;i++){
        from.push_back(lt[i]);
        to.push_back(rt[i]);
    }
    answer(c,from,to);
}

/*
int main(){
     create_circuit(4, {1, 2, 1,3,2,4,3,1,2});
}
*/

• Subtask 1: 0 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 9 / 18
• Subtask 6: 28 / 56