use proconio::{fastout, input};

#[fastout]
fn main() {
    input! {
        t: usize,
        testcases: [(usize, usize); t],
    }

    for &(mut n, mut m) in &testcases {
        n /= 2;
        m /= 2;
        let x = (n / 2).min(m);
        n -= 2 * x;
        let ans = 3 * (x + (n / 5) * 2 + (n % 5 > 2) as usize);
        println!("{ans}");
    }
}