def getMoneySpent(keyboards, drives, b):
    sortedKeyBoards = sorted(keyboards, reverse=True)
    drives = sorted(drives, reverse=True)
    sumMax = 0
    
    for i in range(len(sortedKeyBoards)):
        for j in range(len(drives)):
            sumTemp = sortedKeyBoards[i] + drives[j]
            if ( sumTemp >= sumMax and sumTemp <= b):
                sumMax = sumTemp
                
    return -1 if sumMax == 0 else sumMax