#include
using namespace std;
long long invertToMini(long long N){
long long rev=0,reva=0,r,r1,Ncopy;
if(N==9)
return N;
while(N>0){
Ncopy=N;
r=N%10;
// Ncopy=Ncopy/10;
r1=Ncopy%100;
if(r1==9 and r==9)
r=9;
else if(r>4)
r=9-r;
rev=rev*10+r;
N=N/10;
}
while(rev>0){
r=rev%10;
reva=reva*10+r;
rev=rev/10;
}
return reva;
}
int main() {
long long cN;
cin>>cN;
cout<<invertToMini(cN);
return 0;
}