#include <iostream>
#include <cstdio>
#include <cmath>
#include <cstring>

using namespace std;

int main()
{
    string s;
    cin>>s;
    int j=0;
    if(s[0]=='-')j=1;
    int k=s.size()-1;
    while(s[k]=='0'&&k>j) k--;
    if(j!=0) cout<<"-";
    for(int i=k;i>=j;i--) cout<<s[i];
    return 0;
}