关于自来水水费内网数据，外网实现查询的问题_course

如题，本人接了一个自来水水费外网及手机查询官网的项目，客户要求用户可以实时从网站客户端查询到实时水费。但现在问题是实时水费所在的服务器和数据库均是内网，不允许对外开发，那么我想设立一个外网服务器及数据

分段函数的求和寻找极值的一个问题，如何采用C语言的办法实现编程计算_course

Problem Description It is well known, that the year on planet Eisiem has n days. Of course, some days are very good for people, while some others are just horrible. Long observations have shown for each day of the year whether this day is good for most people, or bad. The new president of the Planet Federation wants all people to be happy. He knows that good emotions have a tendency to accumulate, just like bad ones do. The New Year however is a special event and all emotions accumulated by this moment just disappear. Therefore the president wants to change the calendar on Eisiem and choose the new first day of the year, so that the positive emotions would prevail the whole year. More precisely, for all i from 1 to n let ai be 1 if i-th day is good for most people and -1 if it is bad. Let sjk be the sum of ai for all days from the j-th day of the year to the k-th, that is: President wants to find such j to order the j-th day to be the first day of the year, that sjk is positive for all k from 1 to n. Since he wants several variants to choose from, he asks you to find all such j. Since he doesn't want to get too much information at once, first of all he wants to know the number of such j. That is exactly your task. Input The input contains multiple test cases. The first line of the input is a single integer T (1 <= T <= 30) which is the number of test cases. T test cases follow, each preceded by a single blank line. The first line of each test case contains n - the number of days (1 <= n <= 200 000). Next line contains n integer numbers - ai. Output For each case, output the number of different indices j, such that sjk is positive for all k, in a single line. Sample Input 2 5 1 -1 1 -1 1 7 1 1 1 1 1 1 1 Sample Output 1 7

PTA编程1006，提交显示答案错误_course

题目和代码如下，自己测试结果都是正确的，不知道问题出在哪里 num=input() bn,sn=0,0 if len(num)>2: bn=int(num) if len(num)>1: sn=int