题解

#include <bits/stdc++.h>
using namespace std;
long long n,a,b;
int main()
{
int t;
cin>>t;
while(t--)
{
cin>>n>>a>>b;
if(2a<=b) cout<<na<<endl;
else
{
if(n%2==0) cout<<(n/2)b<<endl;
else cout<<n/2b+a<<endl;
}

}
return 0;

}