程序设计能力实训

1008. Sum of digit

单点时限: 2.0 sec

内存限制: 256 MB

Write a program which computes the digit number of sum of two integers and .

输入格式

The first line of input gives the number of cases, . test cases follow.

Each test case consists of two integers and which are separeted by a space in a line. .

输出格式

For each test case, print the number of digits of .

样例

Input
3
5 7
1 99
1000 999
Output
2
3
4
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