102330: [AtCoder]ABC233 A - 10yen Stamp

Memory Limit:256 MB Time Limit:2 S
Judge Style:Text Compare Creator:
Submit:0 Solved:0

Description

Score : $100$ points

Problem Statement

Takahashi wants to send a letter to Santa Claus. He has an envelope with an $X$-yen (Japanese currency) stamp stuck on it.
To be delivered to Santa Claus, the envelope must have stamps in a total value of at least $Y$ yen.
Takahashi will put some more $10$-yen stamps so that the envelope will have stamps worth at least $Y$ yen in total.
At least how many more $10$-yen stamps does Takahashi need to put on the envelope?

Constraints

  • $X$ and $Y$ are integers.
  • $1 \le X,Y \le 1000$

Input

Input is given from Standard Input in the following format:

$X$ $Y$

Output

Print the answer as an integer.


Sample Input 1

80 94

Sample Output 1

2
  • After adding zero $10$-yen stamps to the $80$-yen stamp, the total is $80$ yen, which is less than the required amount of $94$ yen.
  • After adding one $10$-yen stamp to the $80$-yen stamp, the total is $90$ yen, which is less than the required amount of $94$ yen.
  • After adding two $10$-yen stamps to the $80$-yen stamp, the total is $100$ yen, which is not less than the required amount of $94$ yen.

Sample Input 2

1000 63

Sample Output 2

0

The envelope may already have a stamp with enough value.


Sample Input 3

270 750

Sample Output 3

48

Input

题意翻译

给定 $x,y$,求 $x$ 需要加上多少个 $10$(可以是 $0$ 个)才能超过 $y$。 Tip:虽然题目要求的是超过 $y$,但是实际上是**大于等于** $y$ 即可。 Translated by ShanCreeper.

Output

得分:100分 部分 问题描述 Takahashi 想要给圣诞老人寄一封信。他有一个信封,上面贴了一张 X 日元(日本货币)的邮票。 为了能够送达圣诞老人,信封上的邮票总价值必须至少为 Y 日元。 Takahashi 会在信封上再贴一些 10 日元的邮票,使信封上的邮票总价值至少为 Y 日元。 Takahashi 需要在信封上至少再贴多少张 10 日元的邮票? 部分 约束条件 X 和 Y 是整数。 1≤X,Y≤1000 部分 输入 输入格式如下: X Y 部分 输出 将答案作为整数打印。 部分 样例输入 1 80 94 部分 样例输出 1 2 - 在 80 日元邮票上添加 0 张 10 日元邮票后,总价值为 80 日元,低于所需的 94 日元。 - 在 80 日元邮票上添加 1 张 10 日元邮票后,总价值为 90 日元,低于所需的 94 日元。 - 在 80 日元邮票上添加 2 张 10 日元邮票后,总价值为 100 日元,不低于所需的 94 日元。 部分 样例输入 2 1000 63 部分 样例输出 2 0 信封上可能已经有足够价值的邮票。 部分 样例输入 3 270 750 部分 样例输出 3 48

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