Description

Input

The first line contains one integer $q$ ($1 \le q \le 500000$) — the number of queries.

Then $q$ lines follow, each describing a query. The $i$-th line contains three integers $t_i$, $x_i$ and $y_i$ ($1 \le t_i \le 2$). If $t_i = 1$, then it is a query of the first type, $1 \le x_i \le 500000$, and $-1000 \le y_i \le 1000$. If $t_i = 2$, then it it a query of the second type, $1 \le x_i \le 500000$, and $0 \le y_i < x_i$.

It is guaranteed that there will be at least one query of type $2$.

Output

For each query of type $2$ print one integer — the answer to it.

5
1 3 4
2 3 0
2 4 3
1 4 -4
2 1 0

4
4
0