#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int i = 0;i < n;i++)
using ll = long long;

int main(){
  char s,t; cin >>s >>t;
  if(s=='Y') t-=32;
  cout << t << endl;
  return 0;
}
#include <bits/stdc++.h>
using namespace std;

#define MOD 1000000007
#define PI 3.141592653589793238462

/*########################################### DEBUG ###############################################################################################*/
#ifndef ONLINE_JUDGE
#define debug(x)       \
    cerr << #x << " "; \
    _print(x);         \
    cerr << endl;
#else
#define debug(x)
#endif

void _print(long long t)
{
    cerr << t;
}
void _print(int t) { cerr << t; }
void _print(string t) { cerr << t; }
void _print(char t) { cerr << t; }
void _print(long double t) { cerr << t; }
void _print(double t) { cerr << t; }
void _print(unsigned long long t) { cerr << t; }

template <class T, class V>
void _print(pair<T, V> p);
template <class T>
void _print(vector<T> v);
template <class T>
void _print(set<T> v);
template <class T, class V>
void _print(map<T, V> v);
template <class T>
void _print(multiset<T> v);
template <class T, class V>
void _print(pair<T, V> p)
{
    cerr << "{";
    _print(p.first);
    cerr << ",";
    _print(p.second);
    cerr << "}";
}
template <class T>
void _print(vector<T> v)
{
    cerr << "[ ";
    for (T i : v)
    {
        _print(i);
        cerr << " ";
    }
    cerr << "]";
}
template <class T>
void _print(set<T> v)
{
    cerr << "[ ";
    for (T i : v)
    {
        _print(i);
        cerr << " ";
    }
    cerr << "]";
}
template <class T>
void _print(multiset<T> v)
{
    cerr << "[ ";
    for (T i : v)
    {
        _print(i);
        cerr << " ";
    }
    cerr << "]";
}
template <class T, class V>
void _print(map<T, V> v)
{
    cerr << "[ ";
    for (auto i : v)
    {
        _print(i);
        cerr << " ";
    }
    cerr << "]";
}

/*###############################################################################################################################################*/
int main()
{
#ifndef ONLINE_JUDGE
    freopen("error.txt", "w", stderr);
#endif
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    char S, T;
    cin >> S >> T;
    string up = "ABC";
    string down = "abc";
    if (S == 'Y')
    {
        T ^= 32;
    }
    cout << T << "\n";
}
