编程介的小学生
2019-03-16 12:51给定的数字列表构成哪些表达式的问题,如何利用C语言的形式的办法解决
roblem Description
Now give you an string which only contains 0, 1 ,2 ,3 ,4 ,5 ,6 ,7 ,8 ,9.You are asked to add the sign ‘+’ or ’-’ between the characters. Just like give you a string “12345”, you can work out a string “123+4-5”. Now give you an integer N, please tell me how many ways can you find to make the result of the string equal to N .You can only choose at most one sign between two adjacent characters.
Input
Each case contains a string s and a number N . You may be sure the length of the string will not exceed 12 and the absolute value of N will not exceed 999999999999.
Output
The output contains one line for each data set : the number of ways you can find to make the equation.
Sample Input
123456789 3
21 1
Sample Output
18
1
- 点赞
- 回答
- 收藏
- 复制链接分享
0条回答
为你推荐
- 用c语言实现素数的判定方法
- 数据
- 3个回答
- C语言题,希望能给出可靠的理由
- c
- 5个回答
- 怎样用c实现链栈的算术表达式运算,不得使用stl模板
- abcde
- 2个回答
- 从字符串中删除全部数字
- regex
- iphone
- ios
- 1个回答