#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
const int N = 1e6 + 5;
#define int long long
typedef pair<int, int> PII;
#define MAX LONG_LONG_MAX
int ar[N];
int gcd(int a, int b)
{
    return b ? gcd(b, a % b) : a;
}
void solve()
{
    int a, b;
    cin >> a >> b;
    int c = 0, d = 0;

    for (int i = a; i <= b; i++)
    {
        string s;
        cin >> s;
        if (s == "Fizz")
        {
            if (c == 0)
                c = i;
            else
                c = gcd(c, i);
        }
        else if (s == "Buzz")
        {
            if (d == 0)
                d = i;
            else
                d = gcd(d, i);
        }
        else if (s == "FizzBuzz")
        {
            if (d == 0 || c == 0)
            {
                if (c == 0 && d == 0)
                {
                    c = d = i;
                }
                else if (d == 0)
                {
                    d = i;
                    c = gcd(c, i);
                }
                else
                {
                    c = i, d = gcd(d, i);
                }
            }
            else
            {
                d = gcd(d, i);
                c = gcd(c, i);
            }
        }
        else
            ar[i] = i;
    }
    if (c == 0 || d == 0)
    {
        if (c == 0 && d == 0)
        {
            c = d = b + 1;
            if (c > 10000)
            {
                c = d = a - 1;
            }
        }else
        {
            if(c == 0)
                c == 10000;
            if(d == 0)
                d == 10000;
                
        }
    }

    cout << c << " " << d << endl;
}
signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);

    solve();
    return 0;
}