B. Yet Another Meme Problem
time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output

Try guessing the statement from this picture http://tiny.cc/ogyoiz.

You are given two integers $A$ and $B$, calculate the number of pairs $(a, b)$ such that $1 \le a \le A$, $1 \le b \le B$, and the equation $a \cdot b + a + b = conc(a, b)$ is true; $conc(a, b)$ is the concatenation of $a$ and $b$ (for example, $conc(12, 23) = 1223$, $conc(100, 11) = 10011$). $a$ and $b$ should not contain leading zeroes.

Input

The first line contains $t$ ($1 \le t \le 100$) — the number of test cases.

Each test case contains two integers $A$ and $B$ $(1 \le A, B \le 10^9)$.

Output

Print one integer — the number of pairs $(a, b)$ such that $1 \le a \le A$, $1 \le b \le B$, and the equation $a \cdot b + a + b = conc(a, b)$ is true.

Example
Input
3
1 11
4 2
191 31415926

Output
1
0
1337

Note

There is only one suitable pair in the first test case: $a = 1$, $b = 9$ ($1 + 9 + 1 \cdot 9 = 19$).