This is the easy version of the problem. The only difference is that in this version there are no "remove" queries.

Initially you have a set containing one element — $0$. You need to handle $q$ queries of the following types:

• • $x$ — add the integer $x$ to the set. It is guaranteed that this integer is not contained in the set;
• ? $k$ — find the $k\text{-mex}$ of the set.

In our problem, we define the $k\text{-mex}$ of a set of integers as the smallest non-negative integer $x$ that is divisible by $k$ and which is not contained in the set.

Input

The first line contains an integer $q$ ($1 \leq q \leq 2 \cdot 10^5$) — the number of queries.

The following $q$ lines describe the queries.

An addition query of integer $x$ is given in the format + $x$ ($1 \leq x \leq 10^{18}$). It is guaranteed that $x$ was not contained in the set.

A search query of $k\text{-mex}$ is given in the format ? $k$ ($1 \leq k \leq 10^{18}$).

It is guaranteed that there will be at least one query of type ?.

Output

For each query of type ? output a single integer — the $k\text{-mex}$ of the set.

见题面 Input 部分

见题面 Output 部分

In the first example:

After the first and second queries, the set will contain elements $\{0, 1, 2\}$. The smallest non-negative number that is divisible by $1$ and is not contained in the set is $3$.

After the fourth query, the set will contain the elements $\{0, 1, 2, 4\}$. The smallest non-negative number that is divisible by $2$ and is not contained in the set is $6$.

In the second example:

• Initially, the set contains only the element $\{0\}$.
• After adding an integer $100$ the set contains elements $\{0, 100\}$.
• $100\text{-mex}$ of the set is $200$.
• After adding an integer $200$ the set contains elements $\{0, 100, 200\}$.
• $100\text{-mex}$ of the set is $300$.
• After adding an integer $50$ the set contains elements $\{0, 50, 100, 200\}$.
• $50\text{-mex}$ of the set is $150$.