#include
using namespace std;
int main() {
char a[100];
cin>>a;
for(int i=0; a[i] != '\0'; i++){
if(a[i] == '9'){
i++;
}
int digit = a[i]-'0'; //to convert char to int digit, will give difference between ASCII values.
if(digit>=5){
digit=9-digit;
a[i]=digit+'0';
}
}
cout<<a<<endl;
return 0;
}