Submission #254488

#	Time	Username	Problem	Language	Result	Execution time	Memory
254488		MrRobot_28	Drvca (COCI19_drvca)	C++17	0 / 110	93 ms	3060 KiB

drvca

#include <bits/stdc++.h>
                  
using namespace std;
#define int long long
int n;
vector <bool> used;
vector <int> a;
void funct1()
{
	int diff = a[1] - a[0];
	vector <int> vec1;
	used[0] = 1;
	vec1.push_back(a[0]);
	for(int j = 1; j < n; j++)
	{
		int it = lower_bound(a.begin(), a.end(), vec1.back() + diff) - a.begin();
		if(it != a.size() && a[it] == vec1.back() + diff)
		{
			vec1.push_back(a[it]);
			used[it] = 1;
		}
		else
		{
			break;
		}
	}
	vector <int> vec2;
	for(int j = 0; j < n; j++)
	{
		if(!used[j])
		{
			vec2.push_back(a[j]);
		}
	}
	bool flag = true;
	for(int j = 1; j + 1 < vec2.size(); j++)
	{
		if(vec2[j] - vec2[j - 1] != vec2[j + 1] - vec2[j])
		{
			flag = false;
		}
	}
	if(flag && vec2.size() > 0)
	{
		cout << vec1.size() << "\n";
		for(int i = 0; i < vec1.size(); i++)
		{
			cout << vec1[i] << " ";
		}
		cout << "\n";
		cout << vec2.size() << "\n";
		for(int i = 0; i < vec2.size(); i++)
		{
			cout << vec2[i] << " ";
		}
		exit(0);
	}
	for(int i = n - 1; i >= 0; i--)
	{
		if(used[i])
		{
			used[i] = 0;
			break;
		}
	}
	vec1.pop_back();
	if(vec1.size() == 0)
	{
		return;
	}
	vec2.clear();
	for(int i = 0; i < n; i++)
	{
		if(!used[i])
		{
			vec2.push_back(a[i]);
		}
	}
	flag = true;
	for(int j = 1; j + 1 < vec2.size(); j++)
	{
		if(vec2[j] - vec2[j - 1] != vec2[j + 1] - vec2[j])
		{
			flag = false;
		}
	}
	if(flag)
	{
		cout << vec1.size() << "\n";
		for(int i = 0; i < vec1.size(); i++)
		{
			cout << vec1[i] << " ";
		}
		cout << "\n";
		cout << vec2.size() << "\n";
		for(int i = 0; i < vec2.size(); i++)
		{
			cout << vec2[i] << " ";
		}
		exit(0);
	}
	if(vec1.size() == 1)
	{
		return;
	}
	vec1.pop_back();
	vec2.clear();
	for(int i = n - 1; i >= 0; i--)
	{
		if(used[i])
		{
			used[i] = 0;
			break;
		}
	}
	diff = a[n - 1] - a[n - 2];
	vec2.push_back(a[n - 1]);
	while(vec1.size() + vec2.size() < n)
	{
		int j = lower_bound(a.begin(), a.end(), vec2.back() - diff) - a.begin();
		if(j == a.size() || a[j] != vec2.back() - diff)
		{
			break;
		}
		if(used[j])
		{
			if(vec1.back() != a[j])
			{
				break;
			}
			vec1.pop_back();
		}
		vec2.push_back(a[j]);
	}
	if(vec1.size() + vec2.size() == n && vec1.size() != 0)
	{
		cout << vec1.size() << "\n";
		for(int i = 0; i < vec1.size(); i++)
		{
			cout << vec1[i] << " ";
		}
		cout << "\n";
		cout << vec2.size() << "\n";
		for(int i = 0; i < vec2.size(); i++)
		{
			cout << vec2[i] << " ";
		}
		exit(0);
	}
}
void funct2()
{
	int diff = a[2] - a[0];
	vector <int> vec1;
	used[0] = 1;
	vec1.push_back(a[0]);
	for(int j = 1; j < n; j++)
	{
		int it = lower_bound(a.begin(), a.end(), vec1.back() + diff) - a.begin();
		if(it != a.size() && a[it] == vec1.back() + diff)
		{
			vec1.push_back(a[it]);
			used[it] = 1;
		}
		else
		{
			break;
		}
	}
	vector <int> vec2;
	for(int i = 0; i < n; i++)
	{
		if(!used[i])
		{
			vec2.push_back(a[i]);
		}
	}
	bool flag = true;
	for(int j = 1; j + 1 < vec2.size(); j++)
	{
		if(vec2[j] - vec2[j - 1] != vec2[j + 1] - vec2[j])
		{
			flag = false;
		}
	}
	if(flag && vec2.size() > 0)
	{
		cout << vec1.size() << "\n";
		for(int i = 0; i < vec1.size(); i++)
		{
			cout << vec1[i] << " ";
		}
		cout << "\n";
		cout << vec2.size() << "\n";
		for(int i = 0; i < vec2.size(); i++)
		{
			cout << vec2[i] << " ";
		}
		exit(0);
	}
	for(int i = n - 1; i >= 0; i--)
	{
		if(used[i])
		{
			used[i] = 0;
			break;
		}
	}
	vec1.pop_back();
	if(vec1.size() == 0)
	{
		return;
	}
	vec2.clear();
	for(int i = 0; i < n; i++)
	{
		if(!used[i])
		{
			vec2.push_back(a[i]);
		}
	}
	flag = true;
	for(int j = 1; j + 1 < vec2.size(); j++)
	{
		if(vec2[j] - vec2[j - 1] != vec2[j + 1] - vec2[j])
		{
			flag = false;
		}
	}
	if(flag)
	{
		cout << vec1.size() << "\n";
		for(int i = 0; i < vec1.size(); i++)
		{
			cout << vec1[i] << " ";
		}
		cout << "\n";
		cout << vec2.size() << "\n";
		for(int i = 0; i < vec2.size(); i++)
		{
			cout << vec2[i] << " ";
		}
		exit(0);
	}
	if(vec1.size() == 1)
	{
		return;
	}
	vec1.pop_back();
	vec2.clear();
	for(int i = n - 1; i >= 0; i--)
	{
		if(used[i])
		{
			used[i] = 0;
			break;
		}
	}
	diff = a[n - 1] - a[n - 2];
	vec2.push_back(a[n - 1]);
	while(vec1.size() + vec2.size() < n)
	{
		int j = lower_bound(a.begin(), a.end(), vec2.back() - diff) - a.begin();
		if(j == a.size() || a[j] != vec2.back() - diff)
		{
			break;
		}
		if(used[j])
		{
			if(vec1.back() != a[j])
			{
				break;
			}
			vec1.pop_back();
		}
		vec2.push_back(a[j]);
	}
	if(vec1.size() + vec2.size() == n && vec1.size() != 0)
	{
		cout << vec1.size() << "\n";
		for(int i = 0; i < vec1.size(); i++)
		{
			cout << vec1[i] << " ";
		}
		cout << "\n";
		cout << vec2.size() << "\n";
		for(int i = 0; i < vec2.size(); i++)
		{
			cout << vec2[i] << " ";
		}
		exit(0);
	}
}
void funct3()
{
	int diff = a[2] - a[1];
	vector <int> vec1;
	used[0] = 1;
	vec1.push_back(a[1]);
	for(int j = 1; j < n; j++)
	{
		int it = lower_bound(a.begin(), a.end(), vec1.back() + diff) - a.begin();
		if(it != a.size() && a[it] == vec1.back() + diff)
		{
			vec1.push_back(a[it]);
			used[it] = 1;
		}
		else
		{
			return;
		}
	}
	vector <int> vec2;
	for(int j = 0; j < n; j++)
	{
		if(!used[j])
		{
			vec2.push_back(a[j]);
		}
	}
	bool flag = true;
	for(int j = 1; j + 1 < vec2.size(); j++)
	{
		if(vec2[j] - vec2[j - 1] != vec2[j + 1] - vec2[j])
		{
			flag = false;
		}
	}
	if(flag && vec2.size() > 0)
	{
		cout << vec1.size() << "\n";
		for(int i = 0; i < vec1.size(); i++)
		{
			cout << vec1[i] << " ";
		}
		cout << "\n";
		cout << vec2.size() << "\n";
		for(int i = 0; i < vec2.size(); i++)
		{
			cout << vec2[i] << " ";
		}
		exit(0);
	}
	for(int i = n - 1; i >= 0; i--)
	{
		if(used[i])
		{
			used[i] = 0;
			break;
		}
	}
	vec1.pop_back();
	if(vec1.size() == 0)
	{
		return;
	}
	vec2.clear();
	for(int i = 0; i < n; i++)
	{
		if(!used[i])
		{
			vec2.push_back(a[i]);
		}
	}
	flag = true;
	for(int j = 1; j + 1 < vec2.size(); j++)
	{
		if(vec2[j] - vec2[j - 1] != vec2[j + 1] - vec2[j])
		{
			flag = false;
		}
	}
	if(flag)
	{
		cout << vec1.size() << "\n";
		for(int i = 0; i < vec1.size(); i++)
		{
			cout << vec1[i] << " ";
		}
		cout << "\n";
		cout << vec2.size() << "\n";
		for(int i = 0; i < vec2.size(); i++)
		{
			cout << vec2[i] << " ";
		}
		exit(0);
	}
	if(vec1.size() == 1)
	{
		return;
	}
	vec1.pop_back();
	vec2.clear();
	for(int i = n - 1; i >= 0; i--)
	{
		if(used[i])
		{
			used[i] = 0;
			break;
		}
	}
	diff = a[n - 1] - a[n - 2];
	vec2.push_back(a[n - 1]);
	while(vec1.size() + vec2.size() < n)
	{
		int j = lower_bound(a.begin(), a.end(), vec2.back() - diff) - a.begin();
		if(j == a.size() || a[j] != vec2.back() - diff)
		{
			break;
		}
		if(used[j])
		{
			if(vec1.back() != a[j])
			{
				break;
			}
			vec1.pop_back();
		}
		vec2.push_back(a[j]);
	}
	if(vec1.size() + vec2.size() == n && vec1.size() != 0)
	{
		cout << vec1.size() << "\n";
		for(int i = 0; i < vec1.size(); i++)
		{
			cout << vec1[i] << " ";
		}
		cout << "\n";
		cout << vec2.size() << "\n";
		for(int i = 0; i < vec2.size(); i++)
		{
			cout << vec2[i] << " ";
		}
		exit(0);
	}
}
signed main(){
//	ios_base::sync_with_stdio(false);
//	cin.tie(NULL);
//	cout.tie(NULL);
	cin >> n;
	a.resize(n);
	used.resize(n);
	for(int i = 0; i < n; i++)
	{
		cin >> a[i];
	}
	sort(a.begin(), a.end());
	funct1();
	for(int i = 0; i < n; i++)
	{
		used[i] = 0;
	}
	funct2();
	for(int i = 0; i < n; i++)
	{
		used[i] = 0;
	}
	funct3();
	cout << -1;
	return 0;
}

Compilation message (stderr)

drvca.cpp: In function 'void funct1()':
drvca.cpp:17:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(it != a.size() && a[it] == vec1.back() + diff)
      ~~~^~~~~~~~~~~
drvca.cpp:36:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = 1; j + 1 < vec2.size(); j++)
                 ~~~~~~^~~~~~~~~~~~~
drvca.cpp:46:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec1.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:52:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec2.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:80:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = 1; j + 1 < vec2.size(); j++)
                 ~~~~~~^~~~~~~~~~~~~
drvca.cpp:90:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec1.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:96:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec2.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:118:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(vec1.size() + vec2.size() < n)
        ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
drvca.cpp:121:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(j == a.size() || a[j] != vec2.back() - diff)
      ~~^~~~~~~~~~~
drvca.cpp:135:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(vec1.size() + vec2.size() == n && vec1.size() != 0)
     ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
drvca.cpp:138:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec1.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:144:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec2.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp: In function 'void funct2()':
drvca.cpp:160:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(it != a.size() && a[it] == vec1.back() + diff)
      ~~~^~~~~~~~~~~
drvca.cpp:179:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = 1; j + 1 < vec2.size(); j++)
                 ~~~~~~^~~~~~~~~~~~~
drvca.cpp:189:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec1.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:195:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec2.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:223:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = 1; j + 1 < vec2.size(); j++)
                 ~~~~~~^~~~~~~~~~~~~
drvca.cpp:233:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec1.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:239:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec2.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:261:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(vec1.size() + vec2.size() < n)
        ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
drvca.cpp:264:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(j == a.size() || a[j] != vec2.back() - diff)
      ~~^~~~~~~~~~~
drvca.cpp:278:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(vec1.size() + vec2.size() == n && vec1.size() != 0)
     ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
drvca.cpp:281:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec1.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:287:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec2.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp: In function 'void funct3()':
drvca.cpp:303:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(it != a.size() && a[it] == vec1.back() + diff)
      ~~~^~~~~~~~~~~
drvca.cpp:322:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = 1; j + 1 < vec2.size(); j++)
                 ~~~~~~^~~~~~~~~~~~~
drvca.cpp:332:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec1.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:338:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec2.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:366:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = 1; j + 1 < vec2.size(); j++)
                 ~~~~~~^~~~~~~~~~~~~
drvca.cpp:376:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec1.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:382:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec2.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:404:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(vec1.size() + vec2.size() < n)
        ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
drvca.cpp:407:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(j == a.size() || a[j] != vec2.back() - diff)
      ~~^~~~~~~~~~~
drvca.cpp:421:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(vec1.size() + vec2.size() == n && vec1.size() != 0)
     ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
drvca.cpp:424:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec1.size(); i++)
                  ~~^~~~~~~~~~~~~
drvca.cpp:430:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < vec2.size(); i++)
                  ~~^~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 30
• Subtask 4: 0 / 30