/* @ToDo
Reverse a Number
7325 => 5237
12345 => 54321
*/
#include <iostream>
using namespace std;
int main(){
#ifndef ONLINE_JUDGE
freopen("../asset/input.txt","r",stdin);
freopen("../asset/output.txt","w",stdout);
#endif
// Code here!!
int n; cin>>n;
int num = 0;
while(n>0){
num = (num*10) + (n%10);
n /= 10;
}
cout<<num<<endl;
return 0;
}
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