#include <bits/stdc++.h>
using namespace std;
#define endl '\n'



void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
}
int main()
{
    speed();
    #ifdef ONLINE_JUDGE
    freopen("cards.in", "r", stdin);
    freopen("cards.out", "w", stdout);
    #endif
    string s;
    char ch;
    int n,num1,num2,l=0;
    cin>>n>>s;
    for(int i=0;i<n;i++)
    {
        l=0;
        num1=s[i]-'0';
        num2=9-num1;
        if(num1==0&&i==0||num2==0&&i==0)
        {
            s[i]='9';
            l=1;
        }
        else if(num1<num2)ch=num1+'0';
        else ch=num2+'0';
        if(l==0)s[i]=ch;
    }
    cout<<s<<endl;
    return 0;
}