← 返回题目
题库练习 Maximize Sum of Digits
← 上一题 下一题 →

A10817 | Maximize Sum of Digits

时间限制1s
内存限制256MB
通过 / 提交0/0

题目描述

Anton has the integer $x$ . He is interested what positive integer, which doesn't exceed $x$ , has the maximum sum of digits.

Your task is to help Anton and to find the integer that interests him. If there are several such integers, determine the biggest of them.

输入格式

The first line contains the positive integer $x$ ( $1<=x<=10^{18}$ ) — the integer which Anton has.

输出格式

Print the positive integer which doesn't exceed $x$ and has the maximum sum of digits. If there are several such integers, print the biggest of them. Printed integer must not contain leading zeros.

输入输出样例

输入 #1
100
输出 #1
99
输入 #2
48
输出 #2
48
输入 #3
521
输出 #3
499
C++ 编辑器
输入
输出