[codility]PassingCars

Python代码如下：

def solution(A):    # write your code in Python 2.6    curZeroCnt = 0    totalPairs = 0    for value in A:        if value == 0:            curZeroCnt += 1        else:            totalPairs += curZeroCnt        if totalPairs > 1000000000:        return -1    else:        return totalPairs    pass