CF1374A.Required Remainder

传统题 时间 2000 ms 内存 256 MiB 3 尝试 1 已通过 1 标签

Required Remainder

You are given three integers x,yx, y and nn. Your task is to find the maximum integer kk such that 0kn0 \le k \le n that kmodx=yk \bmod x = y, where mod\bmod is modulo operation. Many programming languages use percent operator % to implement it.

In other words, with given x,yx, y and nn you need to find the maximum possible integer from 00 to nn that has the remainder yy modulo xx.

You have to answer tt independent test cases. It is guaranteed that such kk exists for each test case.

Input

The first line of the input contains one integer tt (1t51041 \le t \le 5 \cdot 10^4) — the number of test cases. The next tt lines contain test cases.

The only line of the test case contains three integers x,yx, y and nn ($2 \le x \le 10^9;~ 0 \le y \lt x;~ y \le n \le 10^9$).

It can be shown that such kk always exists under the given constraints.

Output

For each test case, print the answer — maximum non-negative integer kk such that 0kn0 \le k \le n and kmodx=yk \bmod x = y. It is guaranteed that the answer always exists.

Note

In the first test case of the example, the answer is 12339=71762+512339 = 7 \cdot 1762 + 5 (thus, 12339mod7=512339 \bmod 7 = 5). It is obvious that there is no greater integer not exceeding 1234512345 which has the remainder 55 modulo 77.

Samples

7
7 5 12345
5 0 4
10 5 15
17 8 54321
499999993 9 1000000000
10 5 187
2 0 999999999
12339
0
15
54306
999999995
185
999999998

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