#include using namespace std; typedef long long int ll; typedef pair P; typedef vector VI; typedef vector VVI; #define REP(i,n) for(ll i=0;i<(n);i++) #define ALL(v) v.begin(),v.end() template bool chmax(T &x, const T &y) {return (x bool chmin(T &x, const T &y) {return (x>y)?(x=y,true):false;}; constexpr ll MOD=998244353; constexpr ll INF=2e18; int main(){ int t; cin >> t; while(t--){ int a, b; cin >> a >> b; cout << (a+1)*b << endl; } }