#include <iostream> using namespace std; int main() { int a; cin >> a; for (int i = 2; i < a; ++i) { if (a % i == 0) {

123Y456 • 1天前

include

using namespace std;

int main() {

int a;
cin >> a;
for (int i = 2; i < a; ++i) {
	if (a % i == 0) {
		cout << -1;
		return 0;
	}
}
cout << 1;

return 0;

}

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