#include<iostream>
using namespace std;

int main(){
    int num,result=0;
    while(num % 10 == 0) {
        num= num / 10;
    }
    if(num<0){
        num=-num;
        cout<<'-';
    }
    while(num!=0){
        result=result*10+num%10;
        num/=10;
    }
    cout<<result;
   return 0; 
}