include<iostream>

include<cstring>

using namespace std; char c[1000000000]; int main() {

int i,l;
cin>>c;
l=strlen(c)-1;
if(c[0]=='-')
{
    cout<<"-";
    if(c[l]=='0')
    {
        for(i=(l-1);i>0;i--)
        {
            if((c[i]==c[i+1])&&(c[i+1]=='0')) continue;
            else cout<<c[i];

        }  
    }
    else{
        for(i=l;i>0;i--)
        cout<<c[i];
    }
} 
else
{
    if(c[l]=='0')
    {
        for(i=(l-1);i>=0;i--)
        {
            if((c[i]==c[i+1])&&(c[i+1]=='0')) continue;
            else cout<<c[i];

        }  
    }
    else{
        for(i=l;i>=0;i--)
        cout<<c[i];
    }
}
return 0;

}