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code_segments/segment_204.txt

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+On the board Ivy wrote down all integers from $l$ to $r$, inclusive.
+
+In an operation, she does the following:
+
+  * pick two numbers $x$ and $y$ on the board, erase them, and in their place write the numbers $3x$ and $\lfloor \frac{y}{3} \rfloor$. (Here $\lfloor \bullet \rfloor$ denotes rounding down to the nearest integer).
+
+What is the minimum number of operations Ivy needs to make all numbers on the board equal $0$? We have a proof that this is always possible.
+
+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 two integers $l$ and $r$ ($1 \leq l < r \leq 2 \cdot 10^5$).
+
+For each test case, output a single integer — the minimum number of operations needed to make all numbers on the board equal $0$.
+
+In the first test case, we can perform $5$ operations as follows: $$ 1,2,3 \xrightarrow[x=1,\,y=2]{} 3,0,3 \xrightarrow[x=0,\,y=3]{} 1,0,3 \xrightarrow[x=0,\,y=3]{} 1,0,1 \xrightarrow[x=0,\,y=1]{} 0,0,1 \xrightarrow[x=0,\,y=1]{} 0,0,0 .$$