minimpar

#include <iostream>
#define ULL unsigned long long int
using namespace std;
ULL X,Y,x[20];

int main()
{
    cin>>X;
    int n=0;
    while(X)
        x[n]=X%10,X/=10,++n;
    while(x[n-1]%2)
        cout<<x[n-1],--n;
    if(n)
        cout<<++x[n-1],--n;
    for(int i=n-1;i>=0;--i)
        cout<<1;
    return 0;
}