小红的数学题 - 代码 - 韦达定理 - 因数分解

// 韦达定理
#include <iostream>

using namespace std;
using ll = long long;

void solve() {
	ll k; cin >> k;
	ll n = k + 1;
	for(ll i = 2; i * i <= n; i++) {
		if(n % i != 0) continue;
		ll a = i, b = n / i;
		ll p = a + b - 2, q = (a - 1) * (b - 1);
		if(p > 0 && q > 0) {
			cout << p << " " << q << endl;
			return;
		}
	}
	cout << -1 << endl;
}

int main() {
	solve();
	
	return 0;
}