function getMoneySpent(keyboards, drives, b) {
    /*
     * Write your code here.
     */
    keyboards.sort((a, b) => a - b)
    drives.sort((a, b) => b - a)
    
    let maxPrice = -1    
    let kIndex = 0
    let dIndex = 0
    
    while(kIndex < keyboards.length && dIndex < drives.length) {
        let combinedCost = keyboards[kIndex] + drives[dIndex]
        
        if (combinedCost > b) {
            dIndex++
            continue
        }
        
        kIndex++
        
        if (combinedCost > maxPrice) {
            maxPrice = combinedCost
        } 
    }
    
    return maxPrice
}