Submission #421440

#	Time	Username	Problem	Language	Result	Execution time	Memory
421440		Jasiekstrz	Mechanical Doll (IOI18_doll)	C++17	28 / 100	129 ms	9572 KiB

doll

#include "doll.h"
#include<bits/stdc++.h>
using namespace std;
vector<int> X(1),Y(1);
vector<int> AA;
int nxt=-2;
void build_tree(int id,int pot,int l,int r);
int try_add(int l,int r,int pot)
{
	//cerr<<"try "<<l<<" "<<r<<" "<<pot<<"\n\n";
	if(r<l)
		return -1;
	if(pot==0)
		return AA[l];
	X.push_back(0);
	Y.push_back(0);
	int id=nxt;
	nxt--;
	build_tree(id,pot,l,r);
	return id;
}
void build_tree(int id,int pot,int l,int r)
{
	int i=-id-1;
	//cerr<<id<<" "<<i<<" "<<pot<<" "<<l<<" "<<r<<"\n";
	//for(int j=l;j<=r;j++)
	//	cerr<<AA[j]<<" ";
	//cerr<<"\n\n";
	vector<int> B[2];
	int j;
	for(j=r;j>=l && (int)B[1].size()+j-l+1>pot;j--)
		B[(r-j+1)%2].push_back(AA[j]);
	for(;j>=l;j--)
		B[1].push_back(AA[j]);
	reverse(B[0].begin(),B[0].end());
	reverse(B[1].begin(),B[1].end());
	int mid=l+(int)B[0].size()-1;
	for(j=0;j<B[0].size();j++)
		AA[l+j]=B[0][j];
	for(j=0;j<B[1].size();j++)
		AA[mid+1+j]=B[1][j];
	int xd=try_add(l,mid,pot/2);
	X[i]=xd;
	xd=try_add(mid+1,r,pot/2);
	Y[i]=xd;
	return;
}
void create_circuit(int M,vector<int> A)
{
	if(A.size()==1)
	{
		vector<int> ans0(M+1);
		ans0[0]=A[0];
		for(int i=1;i<=M;i++)
			ans0[i]=0;
		answer(ans0,vector<int>(0),vector<int>(0));
		return;
	}
	vector<int> C(M+1);
	C[0]=A[0];
	for(int i=1;i<=M;i++)
		C[i]=-1;
	for(int i=0;i<A.size()-1;i++)
		A[i]=A[i+1];
	A.back()=0;
	int pot=1;
	for(pot=1;2*pot<A.size();pot*=2);
	AA=A;
	build_tree(-1,pot,0,A.size()-1);
	//cerr<<"C:\n";
	//for(auto v:C)
	//	cerr<<v<<" ";
	//cerr<<"\n";
	//cerr<<"X,Y:\n";
	//for(auto v:X)
	//	cerr<<v<<" ";
	//cerr<<"\n";
	//for(auto v:Y)
	//	cerr<<v<<" ";
	//cerr<<"\n";
	answer(C,X,Y);
	return;
}

Compilation message (stderr)

doll.cpp: In function 'void build_tree(int, int, int, int)':
doll.cpp:38:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |  for(j=0;j<B[0].size();j++)
      |          ~^~~~~~~~~~~~
doll.cpp:40:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |  for(j=0;j<B[1].size();j++)
      |          ~^~~~~~~~~~~~
doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:63:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |  for(int i=0;i<A.size()-1;i++)
      |              ~^~~~~~~~~~~
doll.cpp:67:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |  for(pot=1;2*pot<A.size();pot*=2);
      |            ~~~~~^~~~~~~~~

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