#include<bits/stdc++.h>
using namespace std;
int main () {
	string n;
	while(cin >>n) {
		int l=n.size();
		for (int i=0;i<=l;i++){
			if (i%2==1&&n[i]>='A'&&n[i]<='Z') cout << char(n[i]+' ');
			else if (i%2==0&&n[i]>='a'&&n[i]<='z') cout << char(n[i]-' ');
			else cout << n[i];
		}
	}
	return 0;
}