#include <iostream>
#include <atcoder/modint>
int main(){
    std::cin.tie(nullptr)->sync_with_stdio(false);
    int N; std::cin >> N; while(N--){
        long long a, b, c; std::cin >> a >> b >> c;
        std::cout << (atcoder::modint998244353(a*a+b*b+c*c)/(c*c)).val() << "\n";
    }
    return 0;
}