Submission #814762

#	Time	Username	Problem	Language	Result	Execution time	Memory
814762		tlnk07	Lutrija (COCI19_lutrija)	C++17	70 / 70	140 ms	304 KiB

lutrija

#include<bits/stdc++.h>
using namespace std;
#define int long long

long long x, y;

bool check(int x)
{
	for(int i = 2; i * i <= x; ++i)	if(x % i == 0)	return 0;
	return 1;
}

signed main()
{
	cin >> x >> y;
	if(x == 2 && y == 2)	cout << "3\n2 5 2";
	else if(x == 3 && y == 7)	cout << "3\n3 5 7";
	else if(x == 7 && y == 3)	cout << "3\n7 5 3";
	else if(abs(x - y) == 2)	cout << "2\n" << x << " " << y;
	else if(x == 2 || y == 2)
	{
		if(check(max(x, y) + 2))	cout << "3\n" << x << " " << max(x, y) + 2 << " " << y;
		else if(check(max(x, y) - 2))	cout << "3\n" << x << " " << max(x, y) - 2 << " " << y;
		else	cout << -1;
	}
	else if(check(x + 2) && check(y + 2))	cout << "5\n" << x << ' ' << x + 2 << " 2 " << y + 2 << " " << y;
	else if(check(x - 2) && check(y - 2))	cout << "3\n" << x << " 2 " << y << "\n";
	else if(check(x - 2) && check(y + 2))	cout << "4\n" << x << " 2 " << y + 2 << " " << y;
	else if(check(x + 2) && check(y - 2))	cout << "4\n" << x << " " << x + 2 << " 2 " << y; 
	else cout << -1;
}

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