Codeforces Round 640 (Div. 4) |
---|

Finished |

Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ICPC mode for virtual contests.
If you've seen these problems, a virtual contest is not for you - solve these problems in the archive.
If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive.
Never use someone else's code, read the tutorials or communicate with other person during a virtual contest.

binary search

math

*1200

No tag edit access

The problem statement has recently been changed. View the changes.

×
C. K-th Not Divisible by n

time limit per test

1 secondmemory limit per test

256 megabytesinput

standard inputoutput

standard outputYou are given two positive integers $$$n$$$ and $$$k$$$. Print the $$$k$$$-th positive integer that is not divisible by $$$n$$$.

For example, if $$$n=3$$$, and $$$k=7$$$, then all numbers that are not divisible by $$$3$$$ are: $$$1, 2, 4, 5, 7, 8, 10, 11, 13 \dots$$$. The $$$7$$$-th number among them is $$$10$$$.

Input

The first line contains an integer $$$t$$$ ($$$1 \le t \le 1000$$$) — the number of test cases in the input. Next, $$$t$$$ test cases are given, one per line.

Each test case is two positive integers $$$n$$$ ($$$2 \le n \le 10^9$$$) and $$$k$$$ ($$$1 \le k \le 10^9$$$).

Output

For each test case print the $$$k$$$-th positive integer that is not divisible by $$$n$$$.

Example

Input

6 3 7 4 12 2 1000000000 7 97 1000000000 1000000000 2 1

Output

10 15 1999999999 113 1000000001 1

Codeforces (c) Copyright 2010-2024 Mike Mirzayanov

The only programming contests Web 2.0 platform

Server time: Mar/05/2024 03:42:39 (i2).

Desktop version, switch to mobile version.

Supported by

User lists

Name |
---|