#include <bits/stdc++.h>
using namespace std;
using ll = long long;
constexpr ll inf = 2e18;
constexpr ll mod = 998244353;

ll t,a,b,c;
ll ppow(ll x, ll y, ll p) {
    ll res = 1;
    x = x % p;
    while (y > 0) {
        if (y & 1) {
            res = (res * x) % p;
        }
        y = y >> 1;
        x = (x * x) % p;
    }
    return res;
}
int main(){
    cin >> t;
    while(t--){
        cin >> a >> b >> c;
        ll cinv = ppow(c, mod - 2, mod);
        ll sum = a * a + b * b + c * c;
        sum %= mod;
        sum = (sum * cinv) % mod;
        sum = (sum * cinv) % mod;
        cout << sum << endl;
    }
}