include<bits/stdc++.h>
using namespace std; int main() {
int d, b, s = 0, n;
cin >> d;
n = d;
if (n < 0){
n = -n;
}
while(n%10==0){
n/=10;
}
if (n < 0){
n*=-1;
}
while (n >= 1){
b = n % 10;
s = s * 10 + b;
n /= 10;
}
if (d < 0){
s = -s;
}
cout << s;
return 0;
}