Submission #138987

#	Time	Username	Problem	Language	Result	Execution time	Memory
138987		ckodser	Mechanical Doll (IOI18_doll)	C++14	10 / 100	2 ms	204 KiB

doll

#include "doll.h"
#include<bits/stdc++.h>

#define ll int
#define pb push_back
#define ld long double
#define F first
#define S second
#define mp make_pair
#define pii pair<ll,ll> 

using namespace :: std;

const ll maxn=6e5+500;
const ll inf=1e9+900;
const ll mod=1e9+7;


ll cnt=-2;
ll outx[maxn];
ll outy[maxn];

bool yeki(vector<ll> vec){
	for(ll i=1;i<vec.size();i++)if(vec[i]!=vec[0])return 0;
	return 1;
}
void bild(ll node,vector<ll> a){
	ll n=a.size();
	if((n&(-n))!=n){
		reverse(a.begin(),a.end());
		while(1){
			a.pb(node);
			n=a.size();
			if((n&(-n))==n)break;
		}
		reverse(a.begin(),a.end());
	}
	vector<ll> l,r;
	for(ll i=0;i<a.size();i++){
		if(i&1){
			r.pb(a[i]);
		}else{
			l.pb(a[i]);
		}
	}
	if(yeki(l)){
		outx[-node]=l[0];
	}else{
		outx[-node]=cnt--;
		bild(outx[-node],l);
	}
	if(yeki(r)){
		outy[-node]=r[0];
	}else{
		outy[-node]=cnt--;
		bild(outy[-node],r);
	}
}
ll rev(ll a,ll v){
	vector<ll> b;
	for(ll i=0;i<30;i++){
		if((1<<i)<=v){
			b.pb((a>>i)&1);
		}
	}
	reverse(b.begin(),b.end());
	ll ans=0;
	for(ll i=0;i<b.size();i++){
		ans+=(1<<i)*b[i];
	}
	return ans;
}
vector<ll> okKon(vector<ll> b){
	ll n=b.size();
	if((n&(-n))==n)return b;
	ll v=n;
	while((v&(-v))!=v)v++;
	ll o=v-n;
	vector<ll> ans;
	ans.resize(v);
	fill(ans.begin(),ans.end(),0);
	for(ll i=0;i<o;i++){
		ans[(rev(i,v))]=-1;
	}
	ll cnt=0;
	for(auto t:b){
		while(ans[cnt]==-1)cnt++;
		ans[cnt]=t;
		cnt++;
	}
	return ans;
}
void create_circuit(int m,vector<int> a){
	a.pb(0);
	ll n=a.size();
	vector<ll> c,x,y;
	c.resize(m+1);
	vector<ll> b;
	for(ll i=1;i<n;i++)b.pb(a[i]);
	fill(c.begin(),c.end(),-1);
	c[0]=a[0];
	b=okKon(b);
	bild(-1,b);
	for(ll i=-1;i>cnt;i--){
		x.pb(outx[-i]);
		y.pb(outy[-i]);
	}
	/*
	for(auto v:c)cout<<v<<' ';
	cout<<endl;
	for(auto v:x)cout<<v<<' ';
	cout<<endl;
	for(auto v:y)cout<<v<<' ';
	cout<<endl;
	*/
	answer(c,x,y);
}

Compilation message (stderr)

doll.cpp: In function 'bool yeki(std::vector<int>)':
doll.cpp:24:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |  for(ll i=1;i<vec.size();i++)if(vec[i]!=vec[0])return 0;
      |             ~^~~~~~~~~~~
doll.cpp: In function 'void bild(int, std::vector<int>)':
doll.cpp:39:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |  for(ll i=0;i<a.size();i++){
      |             ~^~~~~~~~~
doll.cpp: In function 'int rev(int, int)':
doll.cpp:68:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |  for(ll i=0;i<b.size();i++){
      |             ~^~~~~~~~~

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