oj.uz

Submission #456168

# Submission time Handle Problem Language Result Execution time Memory
456168 2021-08-06T07:48:13 Z Jasiekstrz Lutrija (COCI19_lutrija) C++17
14 / 70
 175 ms 324 KB 
#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
bool is_prime(long long x)
{
	if(x<=1)
		return false;
	for(long long i=2;i*i<=x;i++)
	{
		if(x%i==0)
			return false;
	}
	return true;
}
bool solve(vector<long long> t)
{
	for(auto v:t)
	{
		if(!is_prime(v))
			return false;
	}
	for(size_t i=1;i<t.size();i++)
	{
		if(!is_prime(abs(t[i]-t[i-1])))
			return false;
	}
	cout<<t.size()<<"\n";
	for(auto v:t)
		cout<<v<<" ";
	cout<<"\n";
	return true;
}
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	long long a,b;
	cin>>a>>b;
	if(a==2)
	{
		if(solve({a,b-2,b}))
			return 0;
		if(solve({a,b+2,b}))
			return 0;
		cout<<"-1\n";
		return 0;
	}
	else if(b==2)
	{
		if(solve({a,a-2,b}))
			return 0;
		if(solve({a,a+2,b}))
			return 0;
		cout<<"-1\n";
		return 0;
	}
	else
	{
		if(solve({a,2,b}))
			return 0;
		if(abs(b-a)<=30)
		{
			vector<long long> tmp;
			if(a<b)
			{
				for(long long i=a;i<=b;i+=2)
					tmp.push_back(i);
			}
			else
			{
				for(long long i=a;i>=b;i-=2)
					tmp.push_back(i);
			}
			if(solve(tmp))
				return 0;
		}
		cout<<"-1\n";
		return 0;
	}
	return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 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 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 159 ms 284 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 158 ms 324 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 175 ms 288 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 127 ms 284 KB Output isn't correct
2 Halted 0 ms 0 KB -