import java.io.*;
import java.util.*;
import java.util.function.Function;

public class Main {

    public static void main(String[] args) {
        FastScanner sc = new FastScanner(System.in);

        System.out.println( solve(sc.next()) );
    }

    static String solve(String s) {
        return dfs(s, 0, s.length()) ? "Cat" : "Rabbit";
    }

    static Map<Integer, Boolean> MEMO = new HashMap<>();

    // [from, to)
    static boolean dfs(String s, int from, int to) {
        if( from == to ) return true;
        Integer key = from * 1000 + to;
        if( MEMO.containsKey(key) ) {
            return MEMO.get(key);
        }

        boolean result = _dfs(s, from, to);
        MEMO.put(key, result);
        return result;
    }

    static boolean _dfs(String s, int from, int to) {
        if( s.charAt(from) != 'm' || s.charAt(to-1) != 'w' ) return false;
        boolean hasE = false;
        for (int i = from; i < to; i++) {
            if( s.charAt(i) == 'e' ) {
                hasE = true;
                break;
            }
        }
        if( !hasE ) return false;

        for (int i = from+1; i < to; i++) {
            if( s.charAt(i) == 'e' ) {
                if( dfs( s, from+1, i ) && dfs( s, i+1, to-1 ) ) {
                    return true;
                }
            }
        }

        return false;
    }


    @SuppressWarnings("unused")
    static class FastScanner {
        private BufferedReader reader;
        private StringTokenizer tokenizer;

        FastScanner(InputStream in) {
            reader = new BufferedReader(new InputStreamReader(in));
            tokenizer = null;
        }

        String next() {
            if (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        String nextLine() {
            if (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    return reader.readLine();
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken("\n");
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        int[] nextIntArray(int n) {
            int[] a = new int[n];
            for (int i = 0; i < n; i++)
                a[i] = nextInt();
            return a;
        }

        int[] nextIntArray(int n, int delta) {
            int[] a = new int[n];
            for (int i = 0; i < n; i++)
                a[i] = nextInt() + delta;
            return a;
        }

        long[] nextLongArray(int n) {
            long[] a = new long[n];
            for (int i = 0; i < n; i++)
                a[i] = nextLong();
            return a;
        }
    }

    static <A> void writeLines(A[] as, Function<A, String> f) {
        PrintWriter pw = new PrintWriter(System.out);
        for (A a : as) {
            pw.println(f.apply(a));
        }
        pw.flush();
    }

    static void writeLines(int[] as) {
        PrintWriter pw = new PrintWriter(System.out);
        for (int a : as) pw.println(a);
        pw.flush();
    }

    static void writeLines(long[] as) {
        PrintWriter pw = new PrintWriter(System.out);
        for (long a : as) pw.println(a);
        pw.flush();
    }

    static int max(int... as) {
        int max = Integer.MIN_VALUE;
        for (int a : as) max = Math.max(a, max);
        return max;
    }

    static int min(int... as) {
        int min = Integer.MAX_VALUE;
        for (int a : as) min = Math.min(a, min);
        return min;
    }

    static void debug(Object... args) {
        StringJoiner j = new StringJoiner(" ");
        for (Object arg : args) {
            if (arg instanceof int[]) j.add(Arrays.toString((int[]) arg));
            else if (arg instanceof long[]) j.add(Arrays.toString((long[]) arg));
            else if (arg instanceof double[]) j.add(Arrays.toString((double[]) arg));
            else if (arg instanceof Object[]) j.add(Arrays.toString((Object[]) arg));
            else j.add(arg.toString());
        }
        System.err.println(j.toString());
    }
}



Measured memory_bytes: 45680