13:I[87,["736","static/chunks/89fc4f0e-9e200ae6a0166583.js","401","static/chunks/363642f4-32903b9154b7835a.js","153","static/chunks/153-58eddeb032cc4608.js","131","static/chunks/131-05ce00cfd760e12b.js","87","static/chunks/87-b76b60eef573119a.js","286","static/chunks/app/problem/%5Bid%5D/page-45cf3875257fc32e.js"],"Header"] 14:I[1742,["736","static/chunks/89fc4f0e-9e200ae6a0166583.js","401","static/chunks/363642f4-32903b9154b7835a.js","153","static/chunks/153-58eddeb032cc4608.js","131","static/chunks/131-05ce00cfd760e12b.js","87","static/chunks/87-b76b60eef573119a.js","286","static/chunks/app/problem/%5Bid%5D/page-45cf3875257fc32e.js"],"ProblemView"] 15:T5c5,

Let's call some positive integer classy if its decimal representation contains no more than $$$3$$$ non-zero digits. For example, numbers $$$4$$$, $$$200000$$$, $$$10203$$$ are classy and numbers $$$4231$$$, $$$102306$$$, $$$7277420000$$$ are not.

You are given a segment $$$[L; R]$$$. Count the number of classy integers $$$x$$$ such that $$$L \le x \le R$$$.

Each testcase contains several segments, for each of them you are required to solve the problem separately.

Input

The first line contains a single integer $$$T$$$ ($$$1 \le T \le 10^4$$$) — the number of segments in a testcase.

Each of the next $$$T$$$ lines contains two integers $$$L_i$$$ and $$$R_i$$$ ($$$1 \le L_i \le R_i \le 10^{18}$$$).

Output

Print $$$T$$$ lines — the $$$i$$$-th line should contain the number of

Classy Numbers

Examples