Submission #251510

#	Time	Username	Problem	Language	Result	Execution time	Memory
251510		MrRobot_28	Lutrija (COCI19_lutrija)	C++17	0 / 70	81 ms	384 KiB

lutrija

#include<bits/stdc++.h>
 
using namespace std;
#define int long long
signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int a, b;
	cin >> a >> b;
	bool tr1 = false;
	if(a > b)
	{
		tr1 = true;
		swap(a, b);
	}
	if(a == 2)
	{
		bool fl1 = true;
		bool fl2 = true;
		if(b == 3)
		{
			fl1 = false;
		}
		for(int j = 2; j * j <= (b - 2); j++)
		{
			if((b - 2) % j == 0)
			{
				fl1 = false;
			}
		}
		for(int j = 2; j * j <= b + 2; j++)
		{
			if((b + 2) % j == 0)
			{
				fl2 = false;
			}
		}
		if(tr1)
		{
			swap(a, b);
		}
		if(fl2)
		{
			cout << 3 << "\n";
			cout << a << " " << a + b << " " << b;
		}
		else if(fl1)
		{
			cout << 2 << "\n";
			cout << a << " " << b;
		}
		else
		{
			cout << -1;
		}
		return 0;
	}
	int t = a + 2;
	while(t <= b)
	{
		for(int j = 2;  j * j <= t; j++)
		{
			if(t % j == 0)
			{
				cout << -1;
				return 0;
			}
		}
		t += 2;
	}
	cout << (b - a) / 2 + 1 << "\n";
	if(tr1)
	{
		for(int i = b; i >= a; i -= 2)
		{
			cout << i << " ";
		}
	}
	else
	{
		for(int i = a; i <= b; i += 2)
		{
			cout << i << " ";
		}
	}
	return 0;
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 7
• Subtask 3: 0 / 7
• Subtask 4: 0 / 7
• Subtask 5: 0 / 7
• Subtask 6: 0 / 7
• Subtask 7: 0 / 7
• Subtask 8: 0 / 7
• Subtask 9: 0 / 7
• Subtask 10: 0 / 7