oj.uz

Submission #251510

# Submission time Handle Problem Language Result Execution time Memory
251510 2020-07-21T15:09:07 Z MrRobot_28 Lutrija (COCI19_lutrija) C++17
0 / 70
 81 ms 384 KB 
#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 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Incorrect 0 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Incorrect 1 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 73 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 78 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 81 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 31 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -