#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int i,n,r=0,a,b,min=10000,sum=0; cin>>a; n=a; while(n!=0){ r=r*10+n%10; n/=10; } cout<<r; return 0; }