c#include <bits/stdc++.h> using namespace std; int main() { cin.tie(NULL); cout.tie(NULL); ios_base::sync_with_stdio(false); int T; cin >> T; while(T--){ int N; cin >> N; for(int i = 0; i < N; i++){ long long A, B; cin >> A >> B; cout << A + B << " " << A * B << "\n"; } } return 0; }