open System

let eq = char 61
let lt = char 60
let mt = char 62

let read() = let t = Array.map (int) (Console.ReadLine().Split())
             in t.[0],t.[1]

let N = int (Console.ReadLine())

for i in 1..N do 
    let a,b = read()
    if compare a b = 0 then
        printfn "%c" eq
    elif compare a b = -1 then
        printfn "%c" lt
    else
        printfn "%c" mt