#include <iostream>
using namespace std;
int main() {
int n, m = 9, cn;
cin >> n;
cn = n;
do {
int c = cn % 10;
if (c < m)
m = c;
} while(cn /= 10);
int P = 1, nou = 0;
do {
int c = n % 10;
if (c != m)
{
nou = c * P + nou;
P *= 10;
}
} while (n /= 10);
cout << nou << endl;
}