Submission #829496

#	Time	Username	Problem	Language	Result	Execution time	Memory
829496		vnm06	Mechanical Doll (IOI18_doll)	C++14	47 / 100	69 ms	10820 KiB

doll

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

bool st2(int n)
{
    return n==(n&(-n));
}

vector<int> C;
vector<int> posl;
vector<int> posl2;

void merge_posl(int le, int ri)
{
    if(le==ri) return;
    int mid=(le+ri)/2;
    merge_posl(le, mid);
    merge_posl(mid+1, ri);
    posl2.resize(ri-le+1);
    for(int i=0; i<ri-le+1; i++)
    {
        if(i%2==0) posl2[i]=posl[le+i/2];
        else posl2[i]=posl[mid+1+i/2];
    }
    for(int i=le; i<=ri; i++) posl[i]=posl2[i-le];
}

void create_circuit(int M, std::vector<int> A)
{
    C.resize(M+1);
    for (int i = 0; i <= M; ++i) C[i]=-1;
    C[0]=A[0];
    int N = A.size();
    for(int i=0; i<N-1; i++) A[i]=A[i+1];
    A.resize(N-1);
    N--;
    while(!st2(N+1))
    {
        N++;
        A.push_back(-1);
    }
    A.push_back(0);

    std::vector<int> X(N), Y(N);
    for (int k = 1; k <= N/2; k++)
    {
        X[k-1]=-2*k;
        Y[k-1]=-2*k-1;
    }
    int rm=1, le=1, ri=1;
    posl=A;
    merge_posl(0, N-1);
    /**
    while(rm!=N+1)
    {
        rm*=2;
        posl2.resize(rm);
        for(int i=0; i<rm; i++)
        {
            if(i%2==0) posl2[i]=posl[i/2];
            else posl2[i]=A[le+i/2];
        }
        le=ri+1;
        ri=le*2-1;
        posl=posl2;
        for(int i=0; i<posl.size(); i++) cout<<posl[i]<<" ";
        cout<<endl;
    }*/
    for (int k = N/2+1; k <=N; k++)
    {
        X[k-1]=posl[2*(k-N/2-1)];
        Y[k-1]=posl[2*(k-N/2-1)+1];
    }
   /// cout<<N<<endl;
  ///  for(int i=0; i<=M; i++) cout<<C[i]<<" ";
  ///  cout<<endl;
 ///  for(int i=0; i<N; i++) cout<<X[i]<<" "<<Y[i]<<endl;
    answer(C, X, Y);
}

Compilation message (stderr)

doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:51:9: warning: unused variable 'rm' [-Wunused-variable]
   51 |     int rm=1, le=1, ri=1;
      |         ^~
doll.cpp:51:15: warning: unused variable 'le' [-Wunused-variable]
   51 |     int rm=1, le=1, ri=1;
      |               ^~
doll.cpp:51:21: warning: unused variable 'ri' [-Wunused-variable]
   51 |     int rm=1, le=1, ri=1;
      |                     ^~

• Subtask 1: 0 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 10
• Subtask 4: 10 / 10
• Subtask 5: 9.0000000036 / 18
• Subtask 6: 28.0000000112 / 56