#include
using namespace std;
int main(){
char number[10];
int digit=0;
cin>>number;
int i=0;
if(number[i]==‘9’){
i++;
}
// Iterate over the remaing chars
for(;number[i]!=’\0’;i++){
digit=number[i]-‘0’;// convert char to int to perform arthmatic operations
if(digit>=5){
digit= 9 - digit;
number[i]= digit + ‘0’;// convert int to char
}
}
cout<<number<<endl;
}