#include<bits/stdc++.h>
using namespace std;
#define REPF(i,a,n) for(int i=a;i<(int)(n);i++)
#define REP(i,n) REPF(i,0,n)
#define ALL(c) begin(a),end(a);
#define RALL(c) rbegin(a),rend(a);
#define SZ(c) (int)(c.size())
int main() {
    string s,a,b;
    cin>>s;
    bool f=false;
    REP(i,SZ(s)) {
        if(s[i]=='7') {
            f=true;
            a.push_back('4');
            b.push_back('3');
            continue;
        }
        if(!f) {
            a.push_back(s[i]);
        }
        else {
            a.push_back('0');
            b.push_back(s[i]);
        }
    }
    cout<<a<<" "<<b<<endl;
    return 0;
}