CF1283A.Minutes Before the New Year

New Year is coming and you are excited to know how many minutes remain before the New Year. You know that currently the clock shows $h$ hours and $m$ minutes, where $0 \le hh \lt 24$ and $0 \le mm \lt 60$. We use 24-hour time format!

Your task is to find the number of minutes before the New Year. You know that New Year comes when the clock shows $0$ hours and $0$ minutes.

You have to answer $t$ independent test cases.

新年即将到来，你迫不及待地想知道距离新年还有多少分钟。当前时间是 $h$ 小时 $m$ 分钟，其中 $0 \le h \lt 24$ 且 $0 \le m \lt 60$。我们采用 24 小时制！

你的任务是计算距离新年还有多少分钟。已知新年到来的时刻是 $0$ 小时 $0$ 分钟。

你需要回答 $t$ 个相互独立的测试用例。

The first line of the input contains one integer $t$ ($1 \le t \le 1439$) — the number of test cases.

The following $t$ lines describe test cases. The $i$-th line contains the time as two integers $h$ and $m$ ($0 \le h \lt 24$, $0 \le m \lt 60$). It is guaranteed that this time is not a midnight, i.e. the following two conditions can't be met at the same time: $h=0$ and $m=0$. It is guaranteed that both $h$ and $m$ are given without leading zeros.

输入的第一行包含一个整数 $t$（$1 \le t \le 1439$）—— 表示测试用例的数量。

接下来的 $t$ 行描述各个测试用例。第 $i$ 行以两个整数 $h$ 和 $m$（$0 \le h \lt 24$，$0 \le m \lt 60$）给出时间。保证该时间不是午夜，即以下两个条件不会同时成立：$h=0$ 且 $m=0$。保证 $h$ 和 $m$ 均不带前导零给出。

For each test case, print the answer on it — the number of minutes before the New Year.

对于每个测试用例，输出答案——即距离新年还有多少分钟。