import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.Arrays;
import java.util.BitSet;
import java.util.StringTokenizer;
import java.util.stream.Stream;

public class Main {
    public static void main(String[] args) {
        final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        final BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        try {
            int T = 1;
            for (int i = 0; i < T; ++i) {
                Runner runner = new Runner(br, bw);
                runner.run();
                runner.flush();
            }
            br.close();
            bw.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

class Solution {
    String solution(String S) {
        return isPangram(S) ? "Y\n" : "N\n";
    }

    boolean isPangram(String S) {
        int nAlphas = 'z' - 'a' + 1;
        BitSet seen = new BitSet(nAlphas);
        for (char c : S.toCharArray()) {
            if (' ' == c) continue;
            seen.set(c - 'a');
        }
        return seen.cardinality() == nAlphas;
    }
}

class Runner {
    final Reader reader;
    final BufferedWriter bw;

    final Stream<String> S;

    Runner(BufferedReader br, BufferedWriter bw) {
        this.reader = new Reader(br);
        this.bw = bw;
        try {
            S = br.lines();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public void flush() {
        try {
            bw.write('\n');
            bw.flush();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public void run() throws IOException {
        var sol = new Solution();
        S.forEach(s -> {
            if ("*".equals(s)) return;
            var res = sol.solution(s);
            _write(res);
        });
    }

    private void _write(Object o) {
        try {
            bw.write(String.valueOf(o));
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

class Reader {
    private BufferedReader br;

    public Reader(BufferedReader br) {
        this.br = br;
    }
}