# Variation of linear/trader.imp

def trader():
    var price, min, nShares
    while price > min and min >= 0:
        prob (1,3):
            price = price + 1
        else:
            price = price - 1

        nShares = unif(0,100)

        while nShares > 0:
             nShares = nShares - 1
             tick price