易如反掌

#include<bits/stdc++.h>
using namespace std;
void solve(int x){
int x1=x;
if(x<=0){
cout<<"-";
x=-x;
}
while(x%10==0) x/=10;
while(x!=0){
int a=x%10;
cout<<a;
x/=10;
}
}
int main(){
int n;
cin>>n;
solve(n);
return 0;
}