// 全局变量
var lastKeepBalanceTS = 0

function hedge(buyEx, sellEx, price, amount) {
    var buyRoutine = buyEx.Go("Buy", price, amount)
    var sellRoutine = sellEx.Go("Sell", price, amount)
    Sleep(500)
    buyRoutine.wait()
    sellRoutine.wait()
}

function getDepthPrice(depth, side, amount) {