#include<bits/stdc++.h> using namespace std; int main() { char ch; cin>>ch; if(ch>='a'&&ch<='z') ch=ch-32; else if(ch>='A'&&ch<='Z') ch=ch+32; cout<<ch<<endl; if(ch<'z'&&ch>'Z'&&ch>'z'&&ch<'A') cout<<ch<<endl; return 0; }