Codeforces Round 928 (Div. 4) |
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Finished |
Please note that the time limit for this problem is only 0.5 seconds per test.
Vladislav wrote the integers from $$$1$$$ to $$$n$$$, inclusive, on the board. Then he replaced each integer with the sum of its digits.
What is the sum of the numbers on the board now?
For example, if $$$n=12$$$ then initially the numbers on the board are: $$$$$$1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12.$$$$$$ Then after the replacement, the numbers become: $$$$$$1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3.$$$$$$ The sum of these numbers is $$$1+2+3+4+5+6+7+8+9+1+2+3=51$$$. Thus, for $$$n=12$$$ the answer is $$$51$$$.
The first line contains an integer $$$t$$$ ($$$1 \leq t \leq 10^4$$$) — the number of test cases.
The only line of each test case contains a single integer $$$n$$$ ($$$1 \leq n \leq 2 \cdot 10^5$$$) — the largest number Vladislav writes.
For each test case, output a single integer — the sum of the numbers at the end of the process.
71212314342024200000
51 1 3 6 18465 28170 4600002
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