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

const int mod = 998244353;
ll inv(ll x, ll md = mod) {
	return x? (1 - inv(md%x, x)*md)/x%md+md: md;
}

int main()
{
	cin.tie(0) -> sync_with_stdio(false);
	int t;
	cin >> t;
	while (t--) {
		ll a, b, c;
		cin >> a >> b >> c;
		cout << (a*a + b*b + c*c) % mod * inv(c*c % mod) % mod << '\n';
	}
}