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 integers on a segment $[L_i; R_i]$.


-----Example-----
Input
4
1 1000
1024 1024
65536 65536
999999 1000001

Output
1000
1
0
2

```python

USER_FILENAME = "<user_code>"
import sys, json, builtins
import math, heapq, bisect, itertools, functools, collections, statistics, fractions, decimal, operator, array, random, re, string, os, pathlib
try:
    import resource as _res
except Exception:
    _res = None
from collections import Counter, defaultdict, deque, OrderedDict
from functools import lru_cache, reduce
from itertools import accumulate, permutations, combinations, product
from math import gcd, ceil, floor, sqrt
from decimal import Decimal
try:
    from typing import *
except Exception:
    pass
try:
    sys.setrecursionlimit(1_000_000)
except Exception:
    pass
try:
    import site as _site
    try:
        _sys_sites = _site.getsitepackages() if hasattr(_site, "getsitepackages") else []
        for _p in _sys_sites:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
    try:
        _usp = _site.getusersitepackages()
        if isinstance(_usp, str):
            _usp = [_usp]
        for _p in _usp:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
except Exception:
    pass

ns = {"__name__": "__main__"}
for _k, _v in list(globals().items()):
    if not _k.startswith("_"):
        ns[_k] = _v
_CODE = 'import sys\nclass Solution():\n    mem = dict()\n\n    def classy_Numbers(self):\n        T = int(sys.stdin.readline().strip())\n        self.queries = []\n        for t in range(T):\n            left, right = list(map(int, sys.stdin.readline().strip().split()))\n            print(self.dp(right, 3) - self.dp(left-1, 3))\n\n    def dp(self, target, limit):\n        num_digits = len(str(target))\n        if (target, limit) in self.mem:\n            return self.mem[(target, limit)]\n        if limit == 0:\n            return 1\n        if num_digits <= limit:\n            return target + 1\n\n        top_digit = target // (10 ** (num_digits-1))\n        res = target % (10 ** (num_digits-1))\n        ret = self.dp(res, limit-1) \\\n                + max(top_digit-1, 0) * self.dp(10**(num_digits-1)-1, limit-1) \\\n                + self.dp(10**(num_digits-1)-1, limit)\n        self.mem[(target, limit)] = ret\n        return ret\n\nsol = Solution()\nsol.classy_Numbers()\n# print(sol.dp(1, 3))\n# print(sol.dp(1234, 4, 3))\n# print(sol.dp(12345, 5, 3))\n'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

```

Measured memory_bytes: 17017