Submission #1032825

#	Time	Username	Problem	Language	Result	Execution time	Memory
1032825		parsadox2	Mechanical Doll (IOI18_doll)	C++17	53 / 100	122 ms	20864 KiB

doll

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

using namespace std;

const int N = 2e5 + 10;
int n , m;
vector <int> C , X , Y , adj[N];

int Solve(vector <int> vec , bool flg = true)
{
	if(vec.size() == 1)
		return vec[0];
	X.push_back(0);
	Y.push_back(0);
	int now = X.size();
	if(flg)
	{
		int tmp = 1;
		while(tmp < vec.size())
			tmp *= 2;
		vector <int> fake;
		while(vec.size() + fake.size() < tmp)
			fake.push_back(-now);
		for(auto u : vec)
			fake.push_back(u);
		vec = fake;
	}
	if(vec[0] < 0 && vec.back() < 0)
	{
		X[now - 1] = vec[0];
		Y[now - 1] = vec[0];
		return -now;
	}
	vector <int> v[2];
	if(vec.size() % 2 == 1)
	{
		vec.push_back(-now);
		swap(vec[vec.size() - 1] , vec[vec.size() - 2]);
	}
	for(int i = 0 ; i < vec.size() ; i++)
		v[i % 2].push_back(vec[i]);
	int tmp = Solve(v[0] , 0);
	X[now - 1] = tmp;
	tmp = Solve(v[1] , 0);
	Y[now - 1] = tmp;
	return -1 * now;
}

void Build(int v)
{
	if(adj[v].empty())
	{
		C[v] = 0;
		return;
	}
	int tmp = Solve(adj[v]);
	C[v] = tmp;
}

void create_circuit(int mm , vector <int> A)
{
	n = A.size();
	m = mm;
	C.resize(m + 1);
	adj[0].push_back(A[0]);
	for(int i = 0 ; i + 1 < n ; i++)
		adj[A[i]].push_back(A[i + 1]);
	adj[A.back()].push_back(0);
	for(int i = 0 ; i <= m ; i++)
	{
		Build(i);
	}
	answer(C , X , Y);
}

Compilation message (stderr)

doll.cpp: In function 'int Solve(std::vector<int>, bool)':
doll.cpp:20:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |   while(tmp < vec.size())
      |         ~~~~^~~~~~~~~~~~
doll.cpp:23:34: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   23 |   while(vec.size() + fake.size() < tmp)
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
doll.cpp:41:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |  for(int i = 0 ; i < vec.size() ; i++)
      |                  ~~^~~~~~~~~~~~

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