Contest Teamld: AME1481
oblem Statement
lex likes to play with numbers. She gave you an integer N
Your task is to find the number of positive integers less than or equ al to N that have an odd number of digits
For example 143 contains 3 digits it satisfies the condition, whereas 32 has 2 digits does satisfy the condition.
Input Format
The first line contains a single integer N.
1≤N≤100000
22
mat
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