Submission #714550

#	Time	Username	Problem	Language	Result	Execution time	Memory
714550		firewater	Mechanical Doll (IOI18_doll)	C++14	0 / 100	1 ms	212 KiB

doll

#include<cstdio>
#include<cstring>
#include<iostream>
#include<algorithm>
#include <vector>
#define ll long long
#define N 202300
#include "doll.h"
using namespace std;
vector<int>ans,A,B;
int w,n,nn,a[N];
int dfs(int L,int R,int l,int r)
{
	if(l==r){
		if(l==1)ans[a[++w]]=0;
		return a[++w];
	}
	int x=A.size(),mid=L+R>>1;
	A.push_back(0);
	B.push_back(0);
	if(r<=mid){
		B[x]=-1;
		A[x]=dfs(L,mid,l,r);
	}
	else{
		B[x]=dfs(mid+1,R,mid+1,r);
		A[x]=dfs(L,mid,l,mid);
	}
	return -x-1;
}
void create_circuit(int M, std::vector<int> A)
{
	n=A.size();
	for(int i=1;i<=n;++i)
		a[i]=A[i-1];
	nn=1;
	while(nn<n)nn<<=1;
	
	
	if(n==1){
		ans[0]=a[1];
		for(int i=1;i<=M;++i)
			ans[i]=0;
	}
	else{
		for(int i=0;i<=M;++i)
			ans.push_back(-1);
		dfs(1,nn,1,n);
	}
	answer(ans,A,B);
	return;
}

Compilation message (stderr)

doll.cpp: In function 'int dfs(int, int, int, int)':
doll.cpp:18:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   18 |  int x=A.size(),mid=L+R>>1;
      |                     ~^~

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