using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static long[] NList => ReadLine().Split().Select(long.Parse).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var t = NN;
        var ans = new long[t];
        var mod = 998_244_353;
        for (var i = 0; i < t; ++i)
        {
            var c = NList;
            ans[i] = (c[0] * c[0] % mod + c[1] * c[1] % mod + c[2] * c[2] % mod) % mod * Exp(c[2] * c[2], mod - 2, mod) % mod;
        }
        WriteLine(string.Join("\n", ans));
    }
    static long Exp(long n, long p, int mod)
    {
        long _n = n % mod;
        var _p = p;
        var result = 1L;
        if ((_p & 1) == 1) result *= _n;
        while (_p > 0)
        {
            _n = _n * _n % mod;
            _p >>= 1;
            if ((_p & 1) == 1) result = result * _n % mod;
        }
        return result;
    }
}