#include using namespace std; using Int=long long; using Real=long double; templateinline bool chmin(T&A,S B){if(A>B){A=B;return true;}else{return false;}} templateinline bool chmax(T&A,S B){if(A>L>>K; cout<<(L-1)/K/2*K<<"\n"; } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); cout<>TE; while(TE--)sol(); }