C++ :

#include<iostream>
using namespace std;
int main()
{
int n,a,b,c;
cin>>n;
a=n/100;
b=(n/10)%10;
c=n%10;
cout<<b*100+c*10+a<<endl;
return 0;
}

Python :

# coding=utf-8
a=int(input())
b=a%10
c=a//100
d=a%100//10
print(d,b,c,sep='')