#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cmath>

#define rep(i,n) for(i=0; i<n; ++i)
#define in(a) cin >> a
#define out(a,b) cout << a << b
using namespace std;
using lint = long long;

int main(void){
    int i, j, a, b, c, n, cnt = 0;

    string t = "Aa";
    int dis = t[1] - t[0];
    string s;
    in(s);
    
    rep(i,s.size()){
        int x = s[i] - 0;
        if(x<91)    out((char)(s[i]+dis),"");
        else    out((char)(s[i]-dis),"");
    }
    out("",endl);
    return 0;
}