#include<bits/stdc++.h>
using namespace std;
char s[20];
int main(){
cin >> s;
int qd = 0, len = strlen(s);
if(s[0] == '-'){
cout << '-';
qd = 1;
}
bool canP = false;
for(int i = len - 1; i >= qd; i --){
if(s[i] != '0'){
cout << s[i];
canP = true;
}else if(canP){
cout << '0';
}
}
return 0;
}