#include<bits/stdc++.h>
using namespace std;
#define int long long
signed main()
{
    string s,j = "";
    cin>>s;
    if(s[0] == '-') j += '-';
    for(int i=(int)s.size()-1;i>=0;i--){
        if(s[i] == '0')continue;
        if(s[i] == '-')break;
        else j += s[i];
    }
    cout<<j;
    return 0;
}