# coding=utf-8
#连续子数组的最大和
def Findgreat(arry):
    if arry==None or len(arry)<=0:
        return 0
    msum=0
    nsum=arry[0]
    for i in range(len(arry)):
        if msum<=0:
            msum=arry[i]
        else:
            msum+=arry[i]
        if msum>nsum:
            nsum=msum
    return nsum
def Findgreat1(arry):
    if arry==None or len(arry)<=0:
        return 0
    alist=[0]*len(arry)
    for i in range(len(arry)):
        if i ==0 or alist[i-1]<=0:
            alist[i]=arry[i]
        else:
            alist[i]=alist[i-1]+arry[i]
    return max(alist)

if __name__ == '__main__':
    arry=[2,3,-1,3,4,5,7,0,8]
    print Findgreat(arry)