 # PROBLEM LINK: Div-3 Contest

Author: Bhagya , Rishika
Tester: Rishika
Editorialist: Bhagya

EASY

# PROBLEM:

invert the digits of a number such that number would become minimum

# QUICK EXPLANATION:

invert the digits of number “n” such that number would become minimum. Inverting digit d means replacing it with digit 9 - d. find the minimum number and the final answer shouldn’t start with zero.

# EXPLANATION:

Little Chintu is a smart and naughty kid. He was bothering his teacher in class. so that, his teacher gives him a number n and told him to invert the digits of that number such that number would become minimum. Inverting digit d means replacing it with digit 9 - d. And the final answer shouldn’t start with zero. Can you help Chintu to find minimum number?

### Constraints

0 <= n <= 100000000000000000

# SOLUTION:

``````import java.util.*;
public class Main{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
long n = sc.nextLong();

long ans = 0;
long mul = 1;

while(n >= 10)
{
int rem = (int)(n % 10);
long min = Math.min(rem, 9-rem);
ans = min * mul + ans;
mul = mul * 10;
n = n /10;
}

if(n == 9)
ans = 9 * mul + ans;
else
{
ans = Math.min(n,  9- n) * mul + ans;
}

System.out.println(ans);

sc.close();
}
}``````