Why all testcaes not passed

#1

#include
using namespace std;
#include
#include<math.h>

int main()
{

long long int n,n_new=0;
cin>>n;

int power=0;

while(n>0){

    long long int t = n%10;
    long long int min_x_t = min(t,9-t);
    long long int p = min_x_t * (pow(10,power));
    n_new = n_new + p;


    power++;
    n=n/10;
}

cout<<n_new;

}

why all test cases not passed ?

#2

@Kirtee2002
hello devkishan,
if most significant digit is 9 and then dont convert it to 0 becuase it will give leading zeros.

for ex-> if input is 9981 then output should be 9011

#3

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