Submission #1129846

#	Time	Username	Problem	Language	Result	Execution time	Memory
1129846		Luvidi	Mechanical Doll (IOI18_doll)	C++20	100 / 100	81 ms	17432 KiB

doll

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

const int maxn=2e5;
int ls,k,li;
vector<int> c,x(2*maxn),y(2*maxn);
vector<pair<int,int*>> st;
vector<int*> lp;

int build(int n,int d,int idx){
	if(!n)return -1e9;
	else if(!d)return 1e9;
	else{
		int s=1<<d-1,c=max(0,n-s);
		int id1=build(c,d-1,idx),id2=build(n-c,d-1,idx|1<<k-d);
		int t=li++;
		x[t]=id1;
		y[t]=id2;
		if(id1==1e9)st.push_back({idx,&x[t]});
		else if(id1==-1e9)lp.push_back(&x[t]);
		if(id2==1e9)st.push_back({idx|1<<k-d,&y[t]});
		else if(id2==-1e9)lp.push_back(&y[t]);
		return --ls;
	}
}

void create_circuit(int m, std::vector<int> a) {
	vector<int> out[m+1];
	a.push_back(0);
	int n=a.size();
	while((1<<k)<n)k++;
	int id=build(n,k,0);
	c.resize(m+1);
	for(int i=0;i<=m;i++)c[i]=id;
	for(auto it:lp)*it=id;
	sort(st.begin(),st.end());
	int idx=0;
	for(auto[v,it]:st)*it=a[idx++];
	while(x.size()>li)x.pop_back();
	while(y.size()>li)y.pop_back();
	answer(c,x,y);
}

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