Submission #1264137

#	Time	Username	Problem	Language	Result	Execution time	Memory
1264137		goulthen	Lutrija (COCI19_lutrija)	C++20	0 / 70	0 ms	328 KiB

lutrija

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

#define int long long
#define rep(i,a,b) for (int i = a; i <= b; ++i)

const int MAXN = 1e5 + 10;

bool prime(int x) {
	if (x%2 == 0 && x!=2) return 0;
	for (int i = 3; i*i <= x; i++) if (x%i==0) return 0;
	return 1;
}

int32_t main() {
	ios_base::sync_with_stdio(0);cin.tie(nullptr);
	int a,b;cin >> a >> b;

	if (a != 2 && b != 2) {
		if (a != b -2 && a != b +2) cout << "-1\n";
		else cout << "2\n" << a << " " << b << "\n";
	} else if (a == 2) {
		if (!prime(b+2)) cout << "-1\n";
		else cout <<  "3\n2 " << b+2 << " " << b << '\n';
	} else {
		if (!prime(a+2)) cout << "-1\n";
		else cout << "3\n2 " << a+2 << " " << a << '\n';
	}


	return 0;
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 7
• Subtask 3: 0 / 7
• Subtask 4: 0 / 7
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• Subtask 10: 0 / 7