1001 A+B Format (20 分)

题目

1001 A+B Format (20 分)
Calculate a+b and output the sum in standard format – that is, the digits must be separated into groups of three by commas (unless there are less than four digits).

Input Specification:

Each input file contains one test case. Each case contains a pair of integers a and b where −10
​6≤a,b≤10​6 . The numbers are separated by a space.

Output Specification:

For each test case, you should output the sum of a and b in one line. The sum must be written in the standard format.

Sample Input:

-1000000 9

Sample Output:

-999,991

解题思路

格式化输出单个数字的时候,可以使用内置的 format() 函数

代码

a= int(input())
b= int(input())
print(format(a+b),',')

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