Submission #362162

#	Time	Username	Problem	Language	Result	Execution time	Memory
362162		ogibogi2004	Cheerleaders (info1cup20_cheerleaders)	C++14	16 / 100	2097 ms	2676 KiB

cheerleaders

#include<bits/stdc++.h>
using namespace std;
#define ll long long
vector<int>moves;
int ans=213013213,n;
vector<int>output;
void rec(vector<ll>h,ll d)
{
	int s=0;
	for(int i=0;i<h.size();++i)
	{
		for(int j=i+1;j<h.size();++j)
		{
			if(h[j]<h[i])++s;
		}
	}
	/*for(int j=0;j<moves.size();j++)cout<<moves[j];
	cout<<endl;
	for(int j=0;j<h.size();j++)
	{
		cout<<h[j]<<" ";
	}
	cout<<endl;
	cout<<s<<endl;*/
	if(s<ans)
	{
		ans=s;
		output=moves;
	}
	if(d==2*n)return;
	vector<ll>h1;
	if(moves.size()==0||moves.back()==2)
	{
		for(int j=h.size()/2;j<h.size();++j)h1.push_back(h[j]);
		for(int j=0;j<h.size()/2;++j)h1.push_back(h[j]);
		moves.push_back(1);
		rec(h1,d+1);
		moves.pop_back();
		h1.clear();
	}
	for(int j=0;j<h.size();++j)
	{
		if(j%2==0)h1.push_back(h[j]);
	}
	for(int j=0;j<h.size();++j)
	{
		if(j%2==1)h1.push_back(h[j]);
	}
	moves.push_back(2);
	rec(h1,d+1);
	moves.pop_back();
}
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	cin>>n;
	vector<ll>v;
	for(int i=1;i<=(1<<n);++i)
	{
		int x;
		cin>>x;
		v.push_back(x);
	}
	rec(v,0);
	cout<<ans<<'\n';
	for(auto xd:output)cout<<xd;
	cout<<'\n';
return 0;
}

Compilation message (stderr)

cheerleaders.cpp: In function 'void rec(std::vector<long long int>, long long int)':
cheerleaders.cpp:10:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |  for(int i=0;i<h.size();++i)
      |              ~^~~~~~~~~
cheerleaders.cpp:12:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |   for(int j=i+1;j<h.size();++j)
      |                 ~^~~~~~~~~
cheerleaders.cpp:34:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |   for(int j=h.size()/2;j<h.size();++j)h1.push_back(h[j]);
      |                        ~^~~~~~~~~
cheerleaders.cpp:35:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |   for(int j=0;j<h.size()/2;++j)h1.push_back(h[j]);
      |               ~^~~~~~~~~~~
cheerleaders.cpp:41:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |  for(int j=0;j<h.size();++j)
      |              ~^~~~~~~~~
cheerleaders.cpp:45:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |  for(int j=0;j<h.size();++j)
      |              ~^~~~~~~~~

• Subtask 1: 16 / 16
• Subtask 2: 0 / 10
• Subtask 3: 0 / 25
• Subtask 4: 0 / 21
• Subtask 5: 0 / 28